ftp.cc.uoc.gr
rfc7420
This is a purely informative rendering of an RFC that includes verified errata. This rendering may not be used as a reference.

The following 'Verified' errata have been incorporated in this document: EID 4673
Internet Engineering Task Force (IETF)                        A. Koushik
Request for Comments: 7420                  Brocade Communications, Inc.
Category: Standards Track                                     E. Stephan
ISSN: 2070-1721                                                   Orange
                                                                 Q. Zhao
                                                       Huawei Technology
                                                                 D. King
                                                      Old Dog Consulting
                                                             J. Hardwick
                                                              Metaswitch
                                                           December 2014


         Path Computation Element Communication Protocol (PCEP)
                Management Information Base (MIB) Module

Abstract

   This memo defines a portion of the Management Information Base (MIB)
   for use with network management protocols in the Internet community.
   In particular, it describes managed objects for modeling of the Path
   Computation Element Communication Protocol (PCEP) for communications
   between a Path Computation Client (PCC) and a Path Computation
   Element (PCE), or between two PCEs.

Status of This Memo

   This is an Internet Standards Track document.

   This document is a product of the Internet Engineering Task Force
   (IETF).  It represents the consensus of the IETF community.  It has
   received public review and has been approved for publication by the
   Internet Engineering Steering Group (IESG).  Further information on
   Internet Standards is available in Section 2 of RFC 5741.

   Information about the current status of this document, any errata,
   and how to provide feedback on it may be obtained at
   http://www.rfc-editor.org/info/rfc7420.

Copyright Notice

   Copyright (c) 2014 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
     1.1.  Requirements Language . . . . . . . . . . . . . . . . . .   3
     1.2.  Terminology . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  The Internet-Standard Management Framework  . . . . . . . . .   4
   3.  PCEP MIB Module Architecture  . . . . . . . . . . . . . . . .   4
     3.1.  pcePcepEntityTable  . . . . . . . . . . . . . . . . . . .   4
     3.2.  pcePcepPeerTable  . . . . . . . . . . . . . . . . . . . .   5
     3.3.  pcePcepSessTable  . . . . . . . . . . . . . . . . . . . .   5
     3.4.  PCEP Notifications  . . . . . . . . . . . . . . . . . . .   6
     3.5.  Relationship to Other MIB Modules . . . . . . . . . . . .   6
     3.6.  Illustrative Example  . . . . . . . . . . . . . . . . . .   7
   4.  Object Definitions  . . . . . . . . . . . . . . . . . . . . .   8
     4.1.  PCE-PCEP-MIB  . . . . . . . . . . . . . . . . . . . . . .   8
   5.  Security Considerations . . . . . . . . . . . . . . . . . . .  49
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  50
   7.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  50
     7.1.  Normative References  . . . . . . . . . . . . . . . . . .  50
     7.2.  Informative References  . . . . . . . . . . . . . . . . .  51
   Appendix A.  PCEP MIB Module Example  . . . . . . . . . . . . . .  52
     A.1.  Contents of PCEP MIB Module at PCE2 . . . . . . . . . . .  53
     A.2.  Contents of PCEP MIB Module at PCCb . . . . . . . . . . .  60
   Acknowledgements  . . . . . . . . . . . . . . . . . . . . . . . .  64
   Contributors  . . . . . . . . . . . . . . . . . . . . . . . . . .  64
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  65

1.  Introduction

   The PCE defined in [RFC4655] is an entity that is capable of
   computing a network path or route based on a network graph and
   applying computational constraints.  A PCC may make requests to a PCE
   for paths to be computed.

   PCEP is the communication protocol between a PCC and PCE and is
   defined in [RFC5440].  PCEP interactions include path computation
   requests and path computation replies as well as notifications of
   specific states related to the use of a PCE in the context of
   Multiprotocol Label Switching (MPLS) and Generalized MPLS (GMPLS)
   Traffic Engineering (TE).

   This memo defines a portion of the MIB for use with network
   management protocols in the Internet community.  In particular, it
   defines a MIB module that can be used to monitor PCEP interactions
   between a PCC and a PCE, or between two PCEs.

   The scope of this document is to provide a MIB module for the PCEP
   base protocol defined in [RFC5440].  Extensions to the PCEP base
   protocol are beyond the scope for this document.

1.1.  Requirements Language

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY" and "OPTIONAL" in this
   document are to be interpreted as described in BCP 14 [RFC2119].

1.2.  Terminology

   This document uses the terminology defined in [RFC4655] and
   [RFC5440].  In particular, it uses the following acronyms.

   o  Path Computation Request (PCReq) message.

   o  Path Computation Reply (PCRep) message.

   o  Notification (PCNtf) message.

   o  Error (PCErr) message.

   o  Request Parameter (RP) object.

   o  Synchronization Vector (SVEC) object.

   o  Explicit Route Object (ERO).

   This document uses the term "PCEP entity" to refer to a local PCEP
   speaker, "peer" to refer to a remote PCEP speaker, and "PCEP speaker"
   where it is not necessary to distinguish between local and remote.

2.  The Internet-Standard Management Framework

   For a detailed overview of the documents that describe the current
   Internet-Standard Management Framework, please refer to section 7 of
   RFC 3410 [RFC3410].

   Managed objects are accessed via a virtual information store, termed
   the Management Information Base or MIB.  MIB objects are generally
   accessed through the Simple Network Management Protocol (SNMP).
   Objects in the MIB are defined using the mechanisms defined in the
   Structure of Management Information (SMI).  This memo specifies a MIB
   module that is compliant to the SMIv2, which is described in STD 58,
   RFC 2578 [RFC2578], STD 58, RFC 2579 [RFC2579], and STD 58, RFC 2580
   [RFC2580].

3.  PCEP MIB Module Architecture

   The PCEP MIB module contains the following information:

   a.  PCE and PCC local entity status (see pcePcepEntityTable).

   b.  PCEP peer information (see pcePcepPeerTable).

   c.  PCEP session information (see pcePcepSessTable).

   d.  Notifications to indicate PCEP session changes.

   The PCEP MIB module is limited to "read-only" access except for
   pcePcepNotificationsMaxRate, which is used to throttle the rate at
   which the implementation generates notifications.

3.1.  pcePcepEntityTable

   The PCEP MIB module may contain status information for multiple
   logical local PCEP entities.  There are several scenarios in which
   there may be more than one local PCEP entity, including the
   following.

   o  A physical router, which is partitioned into multiple virtual
      routers, each with its own PCC.

   o  A PCE device that front ends a cluster of compute resources, each
      with a different set of capabilities that are accessed via
      different IP addresses.

   The pcePcepEntityTable contains one row for each local PCEP entity.
   Each row is read-only and contains current status information, plus
   the PCEP entity's running configuration.

   The pcePcepEntityTable is indexed by pcePcepEntityIndex, which also
   acts as the primary index for the other tables in this MIB module.

3.2.  pcePcepPeerTable

   The pcePcepPeerTable contains one row for each peer that the local
   PCEP entity knows about.  Each row is read-only and contains
   information to identify the peer, the running configuration relating
   to that peer, and statistics that track the messages exchanged with
   that peer and its response times.

   A PCEP speaker is identified by its IP address.  If there is a PCEP
   speaker in the network that uses multiple IP addresses, then it looks
   like multiple distinct peers to the other PCEP speakers in the
   network.

   The pcePcepPeerTable is indexed first by pcePcepEntityIndex, then by
   pcePcepPeerAddrType and pcePcepPeerAddr.  This indexing structure
   allows each local PCEP entity to report its own set of peers.

   Since PCEP sessions can be ephemeral, pcePcepPeerTable tracks a peer
   even when no PCEP session currently exists to that peer.  The
   statistics contained in pcePcepPeerTable are an aggregate of the
   statistics for all successive sessions to that peer.

   To limit the quantity of information that is stored, an
   implementation MAY choose to discard a row from pcePcepPeerTable if
   and only if no PCEP session exists to the corresponding peer.

3.3.  pcePcepSessTable

   The pcePcepSessTable contains one row for each PCEP session that the
   PCEP entity (PCE or PCC) is currently participating in.  Each row is
   read-only and contains the running configuration that is applied to
   the session, plus identifiers and statistics for the session.

   The statistics in pcePcepSessTable are semantically different from
   those in pcePcepPeerTable since the former applies to the current
   session only, whereas the latter is the aggregate for all sessions
   that have existed to that peer.

   Although it is forbidden per [RFC5440] to have more than one active
   PCEP session between a given pair of PCEP entities at any one time,
   there is a window during session establishment where the

   pcePcepSessTable may contain two rows for a given peer, one
   representing a session initiated by the local PCEP entity and one
   representing a session initiated by the peer.  If either of these
   sessions reaches an active state, then the other is discarded.

   The pcePcepSessTable is indexed first by pcePcepEntityIndex, then by
   pcePcepPeerAddrType and pcePcepPeerAddr, and finally by
   pcePcepSessInitiator.  This indexing structure allows each local PCEP
   entity to report its own set of active sessions.  The
   pcePcepSessInitiator index allows two rows to exist transiently for a
   given peer, as discussed above.

3.4.  PCEP Notifications

   The PCEP MIB module contains notifications for the following
   conditions.

   a.  pcePcepSessUp: PCEP session has gone up.

   b.  pcePcepSessDown: PCEP session has gone down.

   c.  pcePcepSessLocalOverload: Local PCEP entity has sent an overload
       PCNtf on this session.

   d.  pcePcepSessLocalOverloadClear: Local PCEP entity has sent an
       overload-cleared PCNtf on this session.

   e.  pcePcepSessPeerOverload: Peer has sent an overload PCNtf on this
       session.

   f.  pcePcepSessPeerOverloadClear: Peer has sent an overload-cleared
       PCNtf on this session.

3.5.  Relationship to Other MIB Modules

   The PCEP MIB module imports the following textual conventions from
   the INET-ADDRESS-MIB defined in RFC 4001 [RFC4001]:

   o  InetAddressType

   o  InetAddress

   PCEP relies on existing protocols that have specialized MIB objects
   to monitor their own activities.  Consequently, this document
   considers that the monitoring of underlying protocols is out of scope
   of the PCEP MIB module.

3.6.  Illustrative Example

   The following diagram illustrates the relationships between
   pcePcepEntityTable, pcePcepPeerTable, and pcePcepSessTable.

       Index by:
       pcePcepEntityIndex

       +--------------+      Index by:
       |pcePcepEntity |      pcePcepEntityIndex,
       |Table         |      pcePcepPeerAddrType,
       +--------------+      pcePcepPeerAddr
       |pcePcepEntity |
       |Entry         |<----*
       +--------------+     |  +------------+    Index by:
       |              |     |  |pcePcepPeer |    pcePcepEntityIndex,
       |              |<-*  |  |Table       |    pcePcepPeerAddrType,
       +--------------+  |  |  +------------+    pcePcepPeerAddr,
                         |  *--|PcePcepPeer |    pcePcepSessInitiator
                         |  |  |Entry       |<-----*
                         |  |  +------------+      | +------------+
                         |  *--|            |      | |pcePcepSess |
                         |     |            |<----*| |Table       |
                         |     +------------+     || +------------+
                         *-----|            |     |*-|pcePcepSess |
                         |     |            |<--* |  |Entry       |
                         |     +------------+   | |  +------------+
                         *-----|            |   | *--|            |
                               | [1]        |   |    |            |
                               +------------+   |    +------------+
                                                *----|            |
                                                |    |            |
                                                |    +------------+
                                                *----| [2]        |
                                                     |            |
                                                     +------------+

      [1]: A peer entry with no current session.
      [2]: Two sessions exist during a window in session
           initialization.

4.  Object Definitions

4.1.  PCE-PCEP-MIB

   PCE-PCEP-MIB DEFINITIONS ::= BEGIN

   IMPORTS
       MODULE-IDENTITY,
       OBJECT-TYPE,
       mib-2,
       NOTIFICATION-TYPE,
       Unsigned32,
       Counter32
              FROM SNMPv2-SMI             -- RFC 2578
       TruthValue,
       TimeStamp
              FROM SNMPv2-TC              -- RFC 2579
       MODULE-COMPLIANCE,
       OBJECT-GROUP,
       NOTIFICATION-GROUP
              FROM SNMPv2-CONF            -- RFC 2580
       InetAddressType,
       InetAddress
              FROM INET-ADDRESS-MIB;      -- RFC 4001

   pcePcepMIB MODULE-IDENTITY
       LAST-UPDATED
           "201412171200Z" -- 17 December 2014
       ORGANIZATION
           "IETF Path Computation Element (PCE) Working Group"
       CONTACT-INFO
           "Email: pce@ietf.org
            WG charter:
                     http://datatracker.ietf.org/wg/pce/charter/"

       DESCRIPTION
         "This MIB module defines a collection of objects for managing
          the Path Computation Element Communication Protocol (PCEP).

          Copyright (c) 2014 IETF Trust and the persons identified as
          authors of the code.  All rights reserved.

          Redistribution and use in source and binary forms, with or
          without modification, is permitted pursuant to, and subject
          to the license terms contained in, the Simplified BSD License
          set forth in Section 4.c of the IETF Trust's Legal Provisions
          Relating to IETF Documents
          (http://trustee.ietf.org/license-info)."

       REVISION
           "201412171200Z" -- 17 December 2014
       DESCRIPTION
           "Initial version, published as RFC 7420."
       ::= { mib-2 227 }

   pcePcepNotifications OBJECT IDENTIFIER ::= { pcePcepMIB 0 }
   pcePcepObjects       OBJECT IDENTIFIER ::= { pcePcepMIB 1 }
   pcePcepConformance   OBJECT IDENTIFIER ::= { pcePcepMIB 2 }

   --
   -- PCEP Entity Objects
   --

   pcePcepEntityTable OBJECT-TYPE
       SYNTAX      SEQUENCE OF PcePcepEntityEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "This table contains information about local PCEP entities.
            The entries in this table are read-only."
       ::= { pcePcepObjects 1 }

   pcePcepEntityEntry OBJECT-TYPE
       SYNTAX      PcePcepEntityEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "This entry represents a local PCEP entity."
       INDEX       {  pcePcepEntityIndex  }
       ::= { pcePcepEntityTable 1 }

   PcePcepEntityEntry ::= SEQUENCE {
       pcePcepEntityIndex                Unsigned32,
       pcePcepEntityAdminStatus          INTEGER,
       pcePcepEntityOperStatus           INTEGER,
       pcePcepEntityAddrType             InetAddressType,
       pcePcepEntityAddr                 InetAddress,
       pcePcepEntityConnectTimer         Unsigned32,
       pcePcepEntityConnectMaxRetry      Unsigned32,
       pcePcepEntityInitBackoffTimer     Unsigned32,
       pcePcepEntityMaxBackoffTimer      Unsigned32,
       pcePcepEntityOpenWaitTimer        Unsigned32,
       pcePcepEntityKeepWaitTimer        Unsigned32,
       pcePcepEntityKeepAliveTimer       Unsigned32,
       pcePcepEntityDeadTimer            Unsigned32,
       pcePcepEntityAllowNegotiation     TruthValue,
       pcePcepEntityMaxKeepAliveTimer    Unsigned32,
       pcePcepEntityMaxDeadTimer         Unsigned32,
       pcePcepEntityMinKeepAliveTimer    Unsigned32,
       pcePcepEntityMinDeadTimer         Unsigned32,
       pcePcepEntitySyncTimer            Unsigned32,
       pcePcepEntityRequestTimer         Unsigned32,
       pcePcepEntityMaxSessions          Unsigned32,
       pcePcepEntityMaxUnknownReqs       Unsigned32,
       pcePcepEntityMaxUnknownMsgs       Unsigned32
   }

   pcePcepEntityIndex OBJECT-TYPE
       SYNTAX      Unsigned32
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "This index is used to uniquely identify the PCEP entity."
       ::= { pcePcepEntityEntry 1 }

   pcePcepEntityAdminStatus OBJECT-TYPE
       SYNTAX      INTEGER {
                     adminStatusUp(1),
                     adminStatusDown(2)
                   }
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The administrative status of this PCEP entity.

            This is the desired operational status as currently set by
            an operator or by default in the implementation.  The value
            of pcePcepEntityOperStatus represents the current status of
            an attempt to reach this desired status."
       ::= { pcePcepEntityEntry 2 }

   pcePcepEntityOperStatus OBJECT-TYPE
       SYNTAX      INTEGER {
                     operStatusUp(1),
                     operStatusDown(2),
                     operStatusGoingUp(3),
                     operStatusGoingDown(4),
                     operStatusFailed(5),
                     operStatusFailedPerm(6)
                   }
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The operational status of the PCEP entity.  It takes one of
            the following values.

            - operStatusUp(1): the PCEP entity is active.
            - operStatusDown(2): the PCEP entity is inactive.
            - operStatusGoingUp(3): the PCEP entity is activating.
            - operStatusGoingDown(4): the PCEP entity is deactivating.
            - operStatusFailed(5): the PCEP entity has failed and will
              recover when possible.
            - operStatusFailedPerm(6): the PCEP entity has failed and
              will not recover without operator intervention."
       ::= { pcePcepEntityEntry 3 }

   pcePcepEntityAddrType OBJECT-TYPE
       SYNTAX      InetAddressType
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The type of the PCEP entity's Internet address.  This object
            specifies how the value of the pcePcepEntityAddr object
            should be interpreted.  Only values unknown(0), ipv4(1), or
            ipv6(2) are supported."
       ::= { pcePcepEntityEntry 4 }

   pcePcepEntityAddr OBJECT-TYPE
       SYNTAX      InetAddress
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The local Internet address of this PCEP entity.  The type is
            given by pcePcepEntityAddrType.

            If operating as a PCE server, the PCEP entity listens on
            this address.  If operating as a PCC, the PCEP entity binds
            outgoing TCP connections to this address.

            It is possible for the PCEP entity to operate both as a PCC
            and a PCE server, in which case it uses this address both to
            listen for incoming TCP connections and to bind outgoing
            TCP connections."
       ::= { pcePcepEntityEntry 5 }

   pcePcepEntityConnectTimer OBJECT-TYPE
       SYNTAX      Unsigned32 (1..65535)
       UNITS       "seconds"
       MAX-ACCESS  read-only
       STATUS      current

       DESCRIPTION
           "The time that the PCEP entity will wait to establish a TCP
            connection with a peer.  If a TCP connection is not
            established within this time, then PCEP aborts the session
            setup attempt."
       ::= { pcePcepEntityEntry 6 }

   pcePcepEntityConnectMaxRetry OBJECT-TYPE
       SYNTAX      Unsigned32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The maximum number of times the system tries to establish
            a TCP connection to a peer before the session with the peer
            transitions to the idle state.

            When the session transitions to the idle state:
            - pcePcepPeerSessionExists transitions to false(2).
            - the associated PcePcepSessEntry is deleted.
            - a backoff timer runs before the session is tried again."
       ::= { pcePcepEntityEntry 7 }

   pcePcepEntityInitBackoffTimer OBJECT-TYPE
       SYNTAX      Unsigned32 (1..65535)
       UNITS       "seconds"
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The initial backoff time for retrying a failed session
            setup attempt to a peer.

            The backoff time increases for each failed session setup
            attempt, until a maximum backoff time is reached.  The
            maximum backoff time is pcePcepEntityMaxBackoffTimer."
       ::= { pcePcepEntityEntry 8 }

   pcePcepEntityMaxBackoffTimer OBJECT-TYPE
       SYNTAX      Unsigned32
       UNITS       "seconds"
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The maximum backoff time for retrying a failed session
            setup attempt to a peer.

            The backoff time increases for each failed session setup
            attempt, until this maximum value is reached.  Session
            setup attempts then repeats periodically without any
            further increase in backoff time."
       ::= { pcePcepEntityEntry 9 }

   pcePcepEntityOpenWaitTimer OBJECT-TYPE
       SYNTAX      Unsigned32 (1..65535)
       UNITS       "seconds"
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The time that the PCEP entity will wait to receive an Open
            message from a peer after the TCP connection has come up.
            If no Open message is received within this time, then PCEP
            terminates the TCP connection and deletes the associated
            PcePcepSessEntry."
       ::= { pcePcepEntityEntry 10 }

   pcePcepEntityKeepWaitTimer OBJECT-TYPE
       SYNTAX      Unsigned32 (1..65535)
       UNITS       "seconds"
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The time that the PCEP entity will wait to receive a
            Keepalive or PCErr message from a peer during session
            initialization after receiving an Open message.  If no
            Keepalive or PCErr message is received within this time,
            then PCEP terminates the TCP connection and deletes the
            associated PcePcepSessEntry."
       ::= { pcePcepEntityEntry 11 }

   pcePcepEntityKeepAliveTimer OBJECT-TYPE
       SYNTAX      Unsigned32 (0..255)
       UNITS       "seconds"
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The Keepalive transmission timer that this PCEP entity will
            propose in the initial OPEN message of each session it is
            involved in.  This is the maximum time between two
            consecutive messages sent to a peer.  Zero means that
            the PCEP entity prefers not to send Keepalives at all.

            Note that the actual Keepalive transmission intervals, in
            either direction of an active PCEP session, are determined
            by negotiation between the peers as specified by RFC

            5440, and so may differ from this configured value.  For
            the actually negotiated values (per session), see
            pcePcepSessKeepaliveTimer and
            pcePcepSessPeerKeepaliveTimer."
       ::= { pcePcepEntityEntry 12 }

   pcePcepEntityDeadTimer OBJECT-TYPE
       SYNTAX      Unsigned32 (0..255)
       UNITS       "seconds"
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The DeadTimer that this PCEP entity will propose in the
            initial OPEN message of each session it is involved in.
            This is the time after which a peer should declare a
            session down if it does not receive any PCEP messages.
            Zero suggests that the peer does not run a DeadTimer at
            all."
       ::= { pcePcepEntityEntry 13 }

   pcePcepEntityAllowNegotiation OBJECT-TYPE
       SYNTAX      TruthValue
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "Whether the PCEP entity will permit negotiation of session
            parameters."
       ::= { pcePcepEntityEntry 14 }

   pcePcepEntityMaxKeepAliveTimer OBJECT-TYPE
       SYNTAX      Unsigned32 (0..255)
       UNITS       "seconds"
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "In PCEP session parameter negotiation, the maximum value
            that this PCEP entity will accept from a peer for the
            interval between Keepalive transmissions.  Zero means that
            the PCEP entity will allow no Keepalive transmission at
            all."
       ::= { pcePcepEntityEntry 15 }

   pcePcepEntityMaxDeadTimer OBJECT-TYPE
       SYNTAX      Unsigned32 (0..255)
       UNITS       "seconds"
       MAX-ACCESS  read-only
       STATUS      current

       DESCRIPTION
           "In PCEP session parameter negotiation, the maximum value
            that this PCEP entity will accept from a peer for the
            DeadTimer.  Zero means that the PCEP entity will allow not
            running a DeadTimer."
       ::= { pcePcepEntityEntry 16 }

   pcePcepEntityMinKeepAliveTimer OBJECT-TYPE
       SYNTAX      Unsigned32 (0..255)
       UNITS       "seconds"
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "In PCEP session parameter negotiation, the minimum value
            that this PCEP entity will accept for the interval between
            Keepalive transmissions.  Zero means that the PCEP entity
            insists on no Keepalive transmission at all."
       ::= { pcePcepEntityEntry 17 }

   pcePcepEntityMinDeadTimer OBJECT-TYPE
       SYNTAX      Unsigned32 (0..255)
       UNITS       "seconds"
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "In PCEP session parameter negotiation, the minimum value
            that this PCEP entity will accept for the DeadTimer.  Zero
            means that the PCEP entity insists on not running a
            DeadTimer."
       ::= { pcePcepEntityEntry 18 }

   pcePcepEntitySyncTimer OBJECT-TYPE
       SYNTAX      Unsigned32 (0..65535)
       UNITS       "seconds"
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The value of SyncTimer is used in the case of a synchronized
            path computation request using the SVEC object.

            Consider the case where a PCReq message is received by a PCE
            that contains the SVEC object referring to M synchronized
            path computation requests.  If after the expiration of the
            SyncTimer all the M path computation requests have not been
            received, a protocol error is triggered and the PCE MUST
            cancel the whole set of path computation requests.

            The aim of the SyncTimer is to avoid the storage of unused
            synchronized requests should one of them get lost for some
            reason (for example, a misbehaving PCC).

            A value of zero is returned if and only if the entity does
            not use the SyncTimer."
       ::= { pcePcepEntityEntry 19 }

   pcePcepEntityRequestTimer OBJECT-TYPE
       SYNTAX      Unsigned32 (1..65535)
       UNITS       "seconds"
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The maximum time that the PCEP entity will wait for a
            response to a PCReq message."
       ::= { pcePcepEntityEntry 20 }

   pcePcepEntityMaxSessions OBJECT-TYPE
       SYNTAX      Unsigned32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The maximum number of sessions involving this PCEP entity
            that can exist at any time."
       ::= { pcePcepEntityEntry 21 }

   pcePcepEntityMaxUnknownReqs OBJECT-TYPE
       SYNTAX      Unsigned32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The maximum number of unrecognized requests and replies that
            any session on this PCEP entity is willing to accept per
            minute before terminating the session.

            A PCRep message contains an unrecognized reply if it
            contains an RP object whose request ID does not correspond
            to any in-progress request sent by this PCEP entity.

            A PCReq message contains an unrecognized request if it
            contains an RP object whose request ID is zero."
       ::= { pcePcepEntityEntry 22 }

   pcePcepEntityMaxUnknownMsgs OBJECT-TYPE
       SYNTAX      Unsigned32
       MAX-ACCESS  read-only
       STATUS      current

       DESCRIPTION
           "The maximum number of unknown messages that any session
            on this PCEP entity is willing to accept per minute before
            terminating the session."
       ::= { pcePcepEntityEntry 23 }

   --
   -- The PCEP Peer Table
   --

   pcePcepPeerTable OBJECT-TYPE
       SYNTAX      SEQUENCE OF PcePcepPeerEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "This table contains information about peers known by
            the local PCEP entity.  The entries in this table are
            read-only.

            This table gives peer information that spans PCEP
            sessions.  Information about current PCEP sessions can be
            found in the pcePcepSessTable table."
       ::= { pcePcepObjects 2 }

   pcePcepPeerEntry OBJECT-TYPE
       SYNTAX      PcePcepPeerEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "Information about a single peer that spans all PCEP
            sessions to that peer."
       INDEX { pcePcepEntityIndex,
               pcePcepPeerAddrType,
               pcePcepPeerAddr }
       ::= { pcePcepPeerTable 1 }

   PcePcepPeerEntry ::= SEQUENCE {
       pcePcepPeerAddrType                 InetAddressType,
       pcePcepPeerAddr                     InetAddress,
       pcePcepPeerRole                     INTEGER,
       pcePcepPeerDiscontinuityTime        TimeStamp,
       pcePcepPeerInitiateSession          TruthValue,
       pcePcepPeerSessionExists            TruthValue,
       pcePcepPeerNumSessSetupOK           Counter32,
       pcePcepPeerNumSessSetupFail         Counter32,
       pcePcepPeerSessionUpTime            TimeStamp,
       pcePcepPeerSessionFailTime          TimeStamp,
       pcePcepPeerSessionFailUpTime        TimeStamp,
       pcePcepPeerAvgRspTime               Unsigned32,
       pcePcepPeerLWMRspTime               Unsigned32,
       pcePcepPeerHWMRspTime               Unsigned32,
       pcePcepPeerNumPCReqSent             Counter32,
       pcePcepPeerNumPCReqRcvd             Counter32,
       pcePcepPeerNumPCRepSent             Counter32,
       pcePcepPeerNumPCRepRcvd             Counter32,
       pcePcepPeerNumPCErrSent             Counter32,
       pcePcepPeerNumPCErrRcvd             Counter32,
       pcePcepPeerNumPCNtfSent             Counter32,
       pcePcepPeerNumPCNtfRcvd             Counter32,
       pcePcepPeerNumKeepaliveSent         Counter32,
       pcePcepPeerNumKeepaliveRcvd         Counter32,
       pcePcepPeerNumUnknownRcvd           Counter32,
       pcePcepPeerNumCorruptRcvd           Counter32,
       pcePcepPeerNumReqSent               Counter32,
       pcePcepPeerNumSvecSent              Counter32,
       pcePcepPeerNumSvecReqSent           Counter32,
       pcePcepPeerNumReqSentPendRep        Counter32,
       pcePcepPeerNumReqSentEroRcvd        Counter32,
       pcePcepPeerNumReqSentNoPathRcvd     Counter32,
       pcePcepPeerNumReqSentCancelRcvd     Counter32,
       pcePcepPeerNumReqSentErrorRcvd      Counter32,
       pcePcepPeerNumReqSentTimeout        Counter32,
       pcePcepPeerNumReqSentCancelSent     Counter32,
       pcePcepPeerNumReqSentClosed         Counter32,
       pcePcepPeerNumReqRcvd               Counter32,
       pcePcepPeerNumSvecRcvd              Counter32,
       pcePcepPeerNumSvecReqRcvd           Counter32,
       pcePcepPeerNumReqRcvdPendRep        Counter32,
       pcePcepPeerNumReqRcvdEroSent        Counter32,
       pcePcepPeerNumReqRcvdNoPathSent     Counter32,
       pcePcepPeerNumReqRcvdCancelSent     Counter32,
       pcePcepPeerNumReqRcvdErrorSent      Counter32,
       pcePcepPeerNumReqRcvdCancelRcvd     Counter32,
       pcePcepPeerNumReqRcvdClosed         Counter32,
       pcePcepPeerNumRepRcvdUnknown        Counter32,
       pcePcepPeerNumReqRcvdUnknown        Counter32
   }

   pcePcepPeerAddrType OBJECT-TYPE
       SYNTAX      InetAddressType
       MAX-ACCESS  not-accessible
       STATUS      current

       DESCRIPTION
           "The type of the peer's Internet address.  This object
            specifies how the value of the pcePcepPeerAddr object should
            be interpreted.  Only values unknown(0), ipv4(1), or
            ipv6(2) are supported."
       ::= { pcePcepPeerEntry 1 }

   pcePcepPeerAddr OBJECT-TYPE
       SYNTAX      InetAddress
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "The Internet address of the peer.  The type is given by
            pcePcepPeerAddrType."
       ::= { pcePcepPeerEntry 2 }

   pcePcepPeerRole OBJECT-TYPE
       SYNTAX      INTEGER {
                     unknown(0),
                     pcc(1),
                     pce(2),
                     pccAndPce(3)
                   }
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The role that this peer took the last time a session was
            established.  It takes one of the following values.
            - unknown(0): this peer's role is not known.
            - pcc(1): this peer is a Path Computation Client (PCC).
            - pce(2): this peer is a Path Computation Element (PCE).
            - pccAndPce(3): this peer is both a PCC and a PCE."
       ::= { pcePcepPeerEntry 3 }

   pcePcepPeerDiscontinuityTime OBJECT-TYPE
       SYNTAX      TimeStamp
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The value of sysUpTime at the time that the information and
            statistics in this row were last reset."
       ::= { pcePcepPeerEntry 4 }

   pcePcepPeerInitiateSession OBJECT-TYPE
       SYNTAX      TruthValue
       MAX-ACCESS  read-only
       STATUS      current

       DESCRIPTION
           "Indicates whether the local PCEP entity initiates sessions
            to this peer or waits for the peer to initiate a session."
       ::= { pcePcepPeerEntry 5 }

   pcePcepPeerSessionExists OBJECT-TYPE
       SYNTAX      TruthValue
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "Indicates whether a session with this peer currently
            exists."
       ::= { pcePcepPeerEntry 6 }

   pcePcepPeerNumSessSetupOK OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The number of PCEP sessions successfully established with
            the peer, including any current session.  This counter is
            incremented each time a session with this peer is
            successfully established."
       ::= { pcePcepPeerEntry 7 }

   pcePcepPeerNumSessSetupFail OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The number of PCEP sessions with the peer that have been
            attempted but failed before being fully established.
            This counter is incremented each time a session retry to
            this peer fails."
       ::= { pcePcepPeerEntry 8 }

   pcePcepPeerSessionUpTime OBJECT-TYPE
       SYNTAX      TimeStamp
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The value of sysUpTime the last time a session with this
            peer was successfully established.

            If pcePcepPeerNumSessSetupOK is zero, then this object
            contains zero."
       ::= { pcePcepPeerEntry 9 }

   pcePcepPeerSessionFailTime OBJECT-TYPE
       SYNTAX      TimeStamp
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The value of sysUpTime the last time a session with this
            peer failed to be established.

            If pcePcepPeerNumSessSetupFail is zero, then this object
            contains zero."
       ::= { pcePcepPeerEntry 10 }

   pcePcepPeerSessionFailUpTime OBJECT-TYPE
       SYNTAX      TimeStamp
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The value of sysUpTime the last time a session with this
            peer failed from active.

            If pcePcepPeerNumSessSetupOK is zero, then this object
            contains zero."
       ::= { pcePcepPeerEntry 11 }

   pcePcepPeerAvgRspTime OBJECT-TYPE
       SYNTAX      Unsigned32
       UNITS       "milliseconds"
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The average response time for this peer.

            If an average response time has not been calculated for this
            peer, then this object has the value zero.

            If pcePcepPeerRole is pcc, then this field is meaningless
            and is set to zero."
       ::= { pcePcepPeerEntry 12 }

   pcePcepPeerLWMRspTime OBJECT-TYPE
       SYNTAX      Unsigned32
       UNITS       "milliseconds"
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The smallest (low-water mark) response time seen from this
            peer.

            If no responses have been received from this peer, then this
            object has the value zero.

            If pcePcepPeerRole is pcc, then this field is meaningless
            and is set to zero."
       ::= { pcePcepPeerEntry 13 }

   pcePcepPeerHWMRspTime OBJECT-TYPE
       SYNTAX      Unsigned32
       UNITS       "milliseconds"
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The greatest (high-water mark) response time seen from this
            peer.

            If no responses have been received from this peer, then this
            object has the value zero.

            If pcePcepPeerRole is pcc, then this field is meaningless
            and is set to zero."
       ::= { pcePcepPeerEntry 14 }

   pcePcepPeerNumPCReqSent OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The number of PCReq messages sent to this peer."
       ::= { pcePcepPeerEntry 15 }

   pcePcepPeerNumPCReqRcvd OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The number of PCReq messages received from this peer."
       ::= { pcePcepPeerEntry 16 }

   pcePcepPeerNumPCRepSent OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The number of PCRep messages sent to this peer."
       ::= { pcePcepPeerEntry 17 }

   pcePcepPeerNumPCRepRcvd OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The number of PCRep messages received from this peer."
       ::= { pcePcepPeerEntry 18 }

   pcePcepPeerNumPCErrSent OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The number of PCErr messages sent to this peer."
       ::= { pcePcepPeerEntry 19 }

   pcePcepPeerNumPCErrRcvd OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The number of PCErr messages received from this peer."
       ::= { pcePcepPeerEntry 20 }

   pcePcepPeerNumPCNtfSent OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The number of PCNtf messages sent to this peer."
       ::= { pcePcepPeerEntry 21 }

   pcePcepPeerNumPCNtfRcvd OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The number of PCNtf messages received from this peer."
       ::= { pcePcepPeerEntry 22 }

   pcePcepPeerNumKeepaliveSent OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The number of Keepalive messages sent to this peer."
       ::= { pcePcepPeerEntry 23 }

   pcePcepPeerNumKeepaliveRcvd OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The number of Keepalive messages received from this peer."
       ::= { pcePcepPeerEntry 24 }

   pcePcepPeerNumUnknownRcvd OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The number of unknown messages received from this peer."
       ::= { pcePcepPeerEntry 25 }

   pcePcepPeerNumCorruptRcvd OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The number of corrupted PCEP messages received from this
            peer."
       ::= { pcePcepPeerEntry 26 }

   pcePcepPeerNumReqSent OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The number of requests sent to this peer.  A request
            corresponds 1:1 with an RP object in a PCReq message.

            This might be greater than pcePcepPeerNumPCReqSent because
            multiple requests can be batched into a single PCReq
            message."
       ::= { pcePcepPeerEntry 27 }

   pcePcepPeerNumSvecSent OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The number of SVEC objects sent to this peer in PCReq
            messages.  An SVEC object represents a set of synchronized
            requests."
       ::= { pcePcepPeerEntry 28 }

   pcePcepPeerNumSvecReqSent OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The number of requests sent to this peer that appeared in
            one or more SVEC objects."
       ::= { pcePcepPeerEntry 29 }

   pcePcepPeerNumReqSentPendRep OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The number of requests that have been sent to this peer for
            which a response is still pending."
       ::= { pcePcepPeerEntry 30 }

   pcePcepPeerNumReqSentEroRcvd OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The number of requests that have been sent to this peer for
            which a response with an ERO was
            received.  Such responses indicate that a path was
            successfully computed by the peer."
       ::= { pcePcepPeerEntry 31 }

   pcePcepPeerNumReqSentNoPathRcvd OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The number of requests that have been sent to this peer for
            which a response with a NO-PATH object was received.  Such
            responses indicate that the peer could not find a path to
            satisfy the request."
       ::= { pcePcepPeerEntry 32 }

   pcePcepPeerNumReqSentCancelRcvd OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The number of requests that were canceled by the peer with
            a PCNtf message.

            This might be different than pcePcepPeerNumPCNtfRcvd because
            not all PCNtf messages are used to cancel requests, and a
            single PCNtf message can cancel multiple requests."
       ::= { pcePcepPeerEntry 33 }

   pcePcepPeerNumReqSentErrorRcvd OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The number of requests that were rejected by the peer with a
            PCErr message.

            This might be different than pcePcepPeerNumPCErrRcvd because
            not all PCErr messages are used to reject requests, and a
            single PCErr message can reject multiple requests."
       ::= { pcePcepPeerEntry 34 }

   pcePcepPeerNumReqSentTimeout OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The number of requests that have been sent to a peer and
            have been abandoned because the peer has taken too long to
            respond to them."
       ::= { pcePcepPeerEntry 35 }

   pcePcepPeerNumReqSentCancelSent OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The number of requests that were sent to the peer and
            explicitly canceled by the local PCEP entity sending a
            PCNtf."
       ::= { pcePcepPeerEntry 36 }

   pcePcepPeerNumReqSentClosed OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The number of requests that were sent to the peer and
            implicitly canceled when the session they were sent over was
            closed."
       ::= { pcePcepPeerEntry 37 }

   pcePcepPeerNumReqRcvd OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The number of requests received from this peer.  A request
            corresponds 1:1 with an RP object in a PCReq message.

            This might be greater than pcePcepPeerNumPCReqRcvd because
            multiple requests can be batched into a single PCReq
            message."
       ::= { pcePcepPeerEntry 38 }

   pcePcepPeerNumSvecRcvd OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The number of SVEC objects received from this peer in PCReq
            messages.  An SVEC object represents a set of synchronized
            requests."
       ::= { pcePcepPeerEntry 39 }

   pcePcepPeerNumSvecReqRcvd OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The number of requests received from this peer that appeared
            in one or more SVEC objects."
       ::= { pcePcepPeerEntry 40 }

   pcePcepPeerNumReqRcvdPendRep OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The number of requests that have been received from this
            peer for which a response is still pending."
       ::= { pcePcepPeerEntry 41 }

   pcePcepPeerNumReqRcvdEroSent OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current

       DESCRIPTION
           "The number of requests that have been received from this
            peer for which a response with an ERO was sent.  Such
            responses indicate that a path was successfully computed by
            the local PCEP entity."
       ::= { pcePcepPeerEntry 42 }

   pcePcepPeerNumReqRcvdNoPathSent OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The number of requests that have been received from this
            peer for which a response with a NO-PATH object was sent.
            Such responses indicate that the local PCEP entity could
            not find a path to satisfy the request."
       ::= { pcePcepPeerEntry 43 }

   pcePcepPeerNumReqRcvdCancelSent OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The number of requests received from this peer that were
            canceled by the local PCEP entity sending a PCNtf message.

            This might be different than pcePcepPeerNumPCNtfSent because
            not all PCNtf messages are used to cancel requests, and a
            single PCNtf message can cancel multiple requests."
       ::= { pcePcepPeerEntry 44 }

   pcePcepPeerNumReqRcvdErrorSent OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The number of requests received from this peer that were
            rejected by the local PCEP entity sending a PCErr message.

            This might be different than pcePcepPeerNumPCErrSent because
            not all PCErr messages are used to reject requests, and a
            single PCErr message can reject multiple requests."
       ::= { pcePcepPeerEntry 45 }

   pcePcepPeerNumReqRcvdCancelRcvd OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current

       DESCRIPTION
           "The number of requests that were received from the peer and
            explicitly canceled by the peer sending a PCNtf."
       ::= { pcePcepPeerEntry 46 }

   pcePcepPeerNumReqRcvdClosed OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The number of requests that were received from the peer and
            implicitly canceled when the session they were received over
            was closed."
       ::= { pcePcepPeerEntry 47 }

   pcePcepPeerNumRepRcvdUnknown OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The number of responses to unknown requests received from
            this peer.  A response to an unknown request is a response
            whose RP object does not contain the request ID of any
            request that is currently outstanding on the session."
       ::= { pcePcepPeerEntry 48 }

   pcePcepPeerNumReqRcvdUnknown OBJECT-TYPE
       SYNTAX      Counter32
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The number of unknown requests that have been received from
            a peer.  An unknown request is a request whose RP object
            contains a request ID of zero."
       ::= { pcePcepPeerEntry 49 }

   --
   -- The PCEP Sessions Table
   --

   pcePcepSessTable OBJECT-TYPE
       SYNTAX      SEQUENCE OF PcePcepSessEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "A table of PCEP sessions that involve the local PCEP
            entity.  Each entry in this table represents a single
            session.  The entries in this table are read-only.

            An entry appears in this table when the corresponding PCEP
            session transitions out of idle state.  If the PCEP session
            transitions back into an idle state, then the corresponding
            entry in this table is removed."
       ::= { pcePcepObjects 3 }

   pcePcepSessEntry OBJECT-TYPE
       SYNTAX      PcePcepSessEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "This entry represents a single PCEP session in which the
            local PCEP entity participates.

            This entry exists only if the corresponding PCEP session has
            been initialized by some event, such as manual user
            configuration, auto-discovery of a peer, or an incoming TCP
            connection."
       INDEX { pcePcepEntityIndex,
               pcePcepPeerAddrType,
               pcePcepPeerAddr,
               pcePcepSessInitiator }
       ::= { pcePcepSessTable 1 }

   PcePcepSessEntry ::= SEQUENCE {
       pcePcepSessInitiator                INTEGER,
       pcePcepSessStateLastChange          TimeStamp,
       pcePcepSessState                    INTEGER,
       pcePcepSessConnectRetry             Counter32,
       pcePcepSessLocalID                  Unsigned32,
       pcePcepSessRemoteID                 Unsigned32,
       pcePcepSessKeepaliveTimer           Unsigned32,
       pcePcepSessPeerKeepaliveTimer       Unsigned32,
       pcePcepSessDeadTimer                Unsigned32,
       pcePcepSessPeerDeadTimer            Unsigned32,
       pcePcepSessKAHoldTimeRem            Unsigned32,
       pcePcepSessOverloaded               TruthValue,
       pcePcepSessOverloadTime             Unsigned32,
       pcePcepSessPeerOverloaded           TruthValue,
       pcePcepSessPeerOverloadTime         Unsigned32,
       pcePcepSessDiscontinuityTime        TimeStamp,
       pcePcepSessAvgRspTime               Unsigned32,
       pcePcepSessLWMRspTime               Unsigned32,
       pcePcepSessHWMRspTime               Unsigned32,
       pcePcepSessNumPCReqSent             Counter32,
       pcePcepSessNumPCReqRcvd             Counter32,
       pcePcepSessNumPCRepSent             Counter32,
       pcePcepSessNumPCRepRcvd             Counter32,
       pcePcepSessNumPCErrSent             Counter32,
       pcePcepSessNumPCErrRcvd             Counter32,
       pcePcepSessNumPCNtfSent             Counter32,
       pcePcepSessNumPCNtfRcvd             Counter32,
       pcePcepSessNumKeepaliveSent         Counter32,
       pcePcepSessNumKeepaliveRcvd         Counter32,
       pcePcepSessNumUnknownRcvd           Counter32,
       pcePcepSessNumCorruptRcvd           Counter32,
       pcePcepSessNumReqSent               Counter32,
       pcePcepSessNumSvecSent              Counter32,
       pcePcepSessNumSvecReqSent           Counter32,
       pcePcepSessNumReqSentPendRep        Counter32,
       pcePcepSessNumReqSentEroRcvd        Counter32,
       pcePcepSessNumReqSentNoPathRcvd     Counter32,
       pcePcepSessNumReqSentCancelRcvd     Counter32,
       pcePcepSessNumReqSentErrorRcvd      Counter32,
       pcePcepSessNumReqSentTimeout        Counter32,
       pcePcepSessNumReqSentCancelSent     Counter32,
       pcePcepSessNumReqRcvd               Counter32,
       pcePcepSessNumSvecRcvd              Counter32,
       pcePcepSessNumSvecReqRcvd           Counter32,
       pcePcepSessNumReqRcvdPendRep        Counter32,
       pcePcepSessNumReqRcvdEroSent        Counter32,
       pcePcepSessNumReqRcvdNoPathSent     Counter32,
       pcePcepSessNumReqRcvdCancelSent     Counter32,
       pcePcepSessNumReqRcvdErrorSent      Counter32,
       pcePcepSessNumReqRcvdCancelRcvd     Counter32,
       pcePcepSessNumRepRcvdUnknown        Counter32,
       pcePcepSessNumReqRcvdUnknown        Counter32
   }

   pcePcepSessInitiator OBJECT-TYPE
       SYNTAX      INTEGER {
                      local(1),
                      remote(2)
                   }
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "The initiator of the session; that is, whether the TCP
            connection was initiated by the local PCEP entity or the
            peer.

            There is a window during session initialization where two
            sessions can exist between a pair of PCEP speakers, each
            initiated by one of the speakers.  One of these sessions is
            always discarded before it leaves OpenWait state.  However,
            before it is discarded, two sessions to the given peer

            appear transiently in this MIB module.  The sessions are
            distinguished by who initiated them, and so this field is an
            index for pcePcepSessTable."
       ::= { pcePcepSessEntry 1 }

   pcePcepSessStateLastChange OBJECT-TYPE
       SYNTAX      TimeStamp
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The value of sysUpTime at the time this session entered its
            current state as denoted by the pcePcepSessState object."
       ::= { pcePcepSessEntry 2 }

   pcePcepSessState OBJECT-TYPE 
       SYNTAX      INTEGER {
		      idle(0),
                      tcpPending(1),
                      openWait(2),
                      keepWait(3),
                      sessionUp(4)
                   }
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The current state of the session."
       ::= { pcePcepSessEntry 3 }	
EID 4673 (Verified) is as follows:

Section: 4.1

Original Text:

pcePcepSessState OBJECT-TYPE
       SYNTAX      INTEGER {
                      tcpPending(1),
                      openWait(2),
                      keepWait(3),
                      sessionUp(4)
                   }
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The current state of the session.

            The set of possible states excludes the idle state since
            entries do not exist in this table in the idle state."
       ::= { pcePcepSessEntry 3 }

Corrected Text:

pcePcepSessState OBJECT-TYPE
       SYNTAX      INTEGER {
		      idle(0),
                      tcpPending(1),
                      openWait(2),
                      keepWait(3),
                      sessionUp(4)
                   }
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "The current state of the session."
       ::= { pcePcepSessEntry 3 }	
Notes:
As per security consideration, if PCE needs to allow incomming connections from only known PCCs.
Source addresses of PCCs are configured on PCE. If PCEP session on PCE goes down with configured PCCs.
PCE needs to raise notification pcePcepSessDown (i.e. details mentioned below).
Issue is whiling sending the notification pcePcepSessDown, as session state (pcePcepSessState) defined in RFC doesn't include idle state.
I suggest to include idle(0) state for pcePcepSessState.


pcePcepSessDown NOTIFICATION-TYPE
OBJECTS {
pcePcepSessState,
pcePcepSessStateLastChange
}
STATUS current
DESCRIPTION
"This notification is sent when the value of
pcePcepSessState leaves the sessionUp state."
::= { pcePcepNotifications 2 }
pcePcepSessConnectRetry OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of times that the local PCEP entity has attempted to establish a TCP connection for this session without success. The PCEP entity gives up when this reaches pcePcepEntityConnectMaxRetry." ::= { pcePcepSessEntry 4 } pcePcepSessLocalID OBJECT-TYPE SYNTAX Unsigned32 (0..255) MAX-ACCESS read-only STATUS current DESCRIPTION "The value of the PCEP session ID used by the local PCEP entity in the Open message for this session. If pcePcepSessState is tcpPending, then this is the session ID that will be used in the Open message. Otherwise, this is the session ID that was sent in the Open message." ::= { pcePcepSessEntry 5 } pcePcepSessRemoteID OBJECT-TYPE SYNTAX Unsigned32 (0..255) MAX-ACCESS read-only STATUS current DESCRIPTION "The value of the PCEP session ID used by the peer in its Open message for this session. If pcePcepSessState is tcpPending or openWait, then this field is not used and MUST be set to zero." ::= { pcePcepSessEntry 6 } pcePcepSessKeepaliveTimer OBJECT-TYPE SYNTAX Unsigned32 (0..255) UNITS "seconds" MAX-ACCESS read-only STATUS current DESCRIPTION "The agreed maximum interval at which the local PCEP entity transmits PCEP messages on this PCEP session. Zero means that the local PCEP entity never sends Keepalives on this session. This field is used if and only if pcePcepSessState is sessionUp. Otherwise, it is not used and MUST be set to zero." ::= { pcePcepSessEntry 7 } pcePcepSessPeerKeepaliveTimer OBJECT-TYPE SYNTAX Unsigned32 (0..255) UNITS "seconds" MAX-ACCESS read-only STATUS current DESCRIPTION "The agreed maximum interval at which the peer transmits PCEP messages on this PCEP session. Zero means that the peer never sends Keepalives on this session. This field is used if and only if pcePcepSessState is sessionUp. Otherwise, it is not used and MUST be set to zero." ::= { pcePcepSessEntry 8 } pcePcepSessDeadTimer OBJECT-TYPE SYNTAX Unsigned32 (0..255) UNITS "seconds" MAX-ACCESS read-only STATUS current DESCRIPTION "The DeadTimer interval for this PCEP session." ::= { pcePcepSessEntry 9 } pcePcepSessPeerDeadTimer OBJECT-TYPE SYNTAX Unsigned32 (0..255) UNITS "seconds" MAX-ACCESS read-only STATUS current DESCRIPTION "The peer's DeadTimer interval for this PCEP session. If pcePcepSessState is tcpPending or openWait, then this field is not used and MUST be set to zero." ::= { pcePcepSessEntry 10 } pcePcepSessKAHoldTimeRem OBJECT-TYPE SYNTAX Unsigned32 (0..255) UNITS "seconds" MAX-ACCESS read-only STATUS current DESCRIPTION "The Keepalive hold time remaining for this session. If pcePcepSessState is tcpPending or openWait, then this field is not used and MUST be set to zero." ::= { pcePcepSessEntry 11 } pcePcepSessOverloaded OBJECT-TYPE SYNTAX TruthValue MAX-ACCESS read-only STATUS current DESCRIPTION "If the local PCEP entity has informed the peer that it is currently overloaded, then this is set to true. Otherwise, it is set to false." ::= { pcePcepSessEntry 12 } pcePcepSessOverloadTime OBJECT-TYPE SYNTAX Unsigned32 UNITS "seconds" MAX-ACCESS read-only STATUS current DESCRIPTION "The interval of time that is remaining until the local PCEP entity will cease to be overloaded on this session. This field is only used if pcePcepSessOverloaded is set to true. Otherwise, it is not used and MUST be set to zero." ::= { pcePcepSessEntry 13 } pcePcepSessPeerOverloaded OBJECT-TYPE SYNTAX TruthValue MAX-ACCESS read-only STATUS current DESCRIPTION "If the peer has informed the local PCEP entity that it is currently overloaded, then this is set to true. Otherwise, it is set to false." ::= { pcePcepSessEntry 14 } pcePcepSessPeerOverloadTime OBJECT-TYPE SYNTAX Unsigned32 UNITS "seconds" MAX-ACCESS read-only STATUS current DESCRIPTION "The interval of time that is remaining until the peer will cease to be overloaded. If it is not known how long the peer will stay in overloaded state, this field is set to zero. This field is only used if pcePcepSessPeerOverloaded is set to true. Otherwise, it is not used and MUST be set to zero." ::= { pcePcepSessEntry 15 } pcePcepSessDiscontinuityTime OBJECT-TYPE SYNTAX TimeStamp MAX-ACCESS read-only STATUS current DESCRIPTION "The value of sysUpTime at the time that the statistics in this row were last reset." ::= { pcePcepSessEntry 16 } pcePcepSessAvgRspTime OBJECT-TYPE SYNTAX Unsigned32 UNITS "milliseconds" MAX-ACCESS read-only STATUS current DESCRIPTION "The average response time for this peer on this session. If an average response time has not been calculated for this peer, then this object has the value zero." ::= { pcePcepSessEntry 17 } pcePcepSessLWMRspTime OBJECT-TYPE SYNTAX Unsigned32 UNITS "milliseconds" MAX-ACCESS read-only STATUS current DESCRIPTION "The smallest (low-water mark) response time seen from this peer on this session. If no responses have been received from this peer, then this object has the value zero." ::= { pcePcepSessEntry 18 } pcePcepSessHWMRspTime OBJECT-TYPE SYNTAX Unsigned32 UNITS "milliseconds" MAX-ACCESS read-only STATUS current DESCRIPTION "The greatest (high-water mark) response time seen from this peer on this session. If no responses have been received from this peer, then this object has the value zero." ::= { pcePcepSessEntry 19 } pcePcepSessNumPCReqSent OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of PCReq messages sent on this session." ::= { pcePcepSessEntry 20 } pcePcepSessNumPCReqRcvd OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of PCReq messages received on this session." ::= { pcePcepSessEntry 21 } pcePcepSessNumPCRepSent OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of PCRep messages sent on this session." ::= { pcePcepSessEntry 22 } pcePcepSessNumPCRepRcvd OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of PCRep messages received on this session." ::= { pcePcepSessEntry 23 } pcePcepSessNumPCErrSent OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of PCErr messages sent on this session." ::= { pcePcepSessEntry 24 } pcePcepSessNumPCErrRcvd OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of PCErr messages received on this session." ::= { pcePcepSessEntry 25 } pcePcepSessNumPCNtfSent OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of PCNtf messages sent on this session." ::= { pcePcepSessEntry 26 } pcePcepSessNumPCNtfRcvd OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of PCNtf messages received on this session." ::= { pcePcepSessEntry 27 } pcePcepSessNumKeepaliveSent OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of Keepalive messages sent on this session." ::= { pcePcepSessEntry 28 } pcePcepSessNumKeepaliveRcvd OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of Keepalive messages received on this session." ::= { pcePcepSessEntry 29 } pcePcepSessNumUnknownRcvd OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of unknown messages received on this session." ::= { pcePcepSessEntry 30 } pcePcepSessNumCorruptRcvd OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of corrupted PCEP messages received on this session." ::= { pcePcepSessEntry 31 } pcePcepSessNumReqSent OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of requests sent on this session. A request corresponds 1:1 with an RP object in a PCReq message. This might be greater than pcePcepSessNumPCReqSent because multiple requests can be batched into a single PCReq message." ::= { pcePcepSessEntry 32 } pcePcepSessNumSvecSent OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of SVEC objects sent on this session in PCReq messages. An SVEC object represents a set of synchronized requests." ::= { pcePcepSessEntry 33 } pcePcepSessNumSvecReqSent OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of requests sent on this session that appeared in one or more SVEC objects." ::= { pcePcepSessEntry 34 } pcePcepSessNumReqSentPendRep OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of requests that have been sent on this session for which a response is still pending." ::= { pcePcepSessEntry 35 } pcePcepSessNumReqSentEroRcvd OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of successful responses received on this session. A response corresponds 1:1 with an RP object in a PCRep message. A successful response is a response for which an ERO was successfully computed." ::= { pcePcepSessEntry 36 } pcePcepSessNumReqSentNoPathRcvd OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of unsuccessful responses received on this session. A response corresponds 1:1 with an RP object in a PCRep message. An unsuccessful response is a response with a NO-PATH object." ::= { pcePcepSessEntry 37 } pcePcepSessNumReqSentCancelRcvd OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of requests sent on this session that were canceled by the peer with a PCNtf message. This might be different than pcePcepSessNumPCNtfRcvd because not all PCNtf messages are used to cancel requests, and a single PCNtf message can cancel multiple requests." ::= { pcePcepSessEntry 38 } pcePcepSessNumReqSentErrorRcvd OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of requests sent on this session that were rejected by the peer with a PCErr message. This might be different than pcePcepSessNumPCErrRcvd because not all PCErr messages are used to reject requests, and a single PCErr message can reject multiple requests." ::= { pcePcepSessEntry 39 } pcePcepSessNumReqSentTimeout OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of requests sent on this session that have been sent to a peer and have been abandoned because the peer has taken too long to respond to them." ::= { pcePcepSessEntry 40 } pcePcepSessNumReqSentCancelSent OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of requests sent on this session that were sent to the peer and explicitly canceled by the local PCEP entity sending a PCNtf." ::= { pcePcepSessEntry 41 } pcePcepSessNumReqRcvd OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of requests received on this session. A request corresponds 1:1 with an RP object in a PCReq message. This might be greater than pcePcepSessNumPCReqRcvd because multiple requests can be batched into a single PCReq message." ::= { pcePcepSessEntry 42 } pcePcepSessNumSvecRcvd OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of SVEC objects received on this session in PCReq messages. An SVEC object represents a set of synchronized requests." ::= { pcePcepSessEntry 43 } pcePcepSessNumSvecReqRcvd OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of requests received on this session that appeared in one or more SVEC objects." ::= { pcePcepSessEntry 44 } pcePcepSessNumReqRcvdPendRep OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of requests that have been received on this session for which a response is still pending." ::= { pcePcepSessEntry 45 } pcePcepSessNumReqRcvdEroSent OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of successful responses sent on this session. A response corresponds 1:1 with an RP object in a PCRep message. A successful response is a response for which an ERO was successfully computed." ::= { pcePcepSessEntry 46 } pcePcepSessNumReqRcvdNoPathSent OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of unsuccessful responses sent on this session. A response corresponds 1:1 with an RP object in a PCRep message. An unsuccessful response is a response with a NO-PATH object." ::= { pcePcepSessEntry 47 } pcePcepSessNumReqRcvdCancelSent OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of requests received on this session that were canceled by the local PCEP entity sending a PCNtf message. This might be different than pcePcepSessNumPCNtfSent because not all PCNtf messages are used to cancel requests, and a single PCNtf message can cancel multiple requests." ::= { pcePcepSessEntry 48 } pcePcepSessNumReqRcvdErrorSent OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of requests received on this session that were rejected by the local PCEP entity sending a PCErr message. This might be different than pcePcepSessNumPCErrSent because not all PCErr messages are used to reject requests, and a single PCErr message can reject multiple requests." ::= { pcePcepSessEntry 49 } pcePcepSessNumReqRcvdCancelRcvd OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of requests that were received on this session and explicitly canceled by the peer sending a PCNtf." ::= { pcePcepSessEntry 50 } pcePcepSessNumRepRcvdUnknown OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of responses to unknown requests received on this session. A response to an unknown request is a response whose RP object does not contain the request ID of any request that is currently outstanding on the session." ::= { pcePcepSessEntry 51 } pcePcepSessNumReqRcvdUnknown OBJECT-TYPE SYNTAX Counter32 MAX-ACCESS read-only STATUS current DESCRIPTION "The number of unknown requests that have been received on this session. An unknown request is a request whose RP object contains a request ID of zero." ::= { pcePcepSessEntry 52 } --- --- Notifications Configuration --- pcePcepNotificationsMaxRate OBJECT-TYPE SYNTAX Unsigned32 MAX-ACCESS read-write STATUS current DESCRIPTION "This variable indicates the maximum number of notifications issued per second. If events occur more rapidly, the implementation may simply fail to emit these notifications during that period or may queue them until an appropriate time. A value of zero means no notifications are emitted and all should be discarded (that is, not queued)." ::= { pcePcepObjects 4 } --- --- Notifications --- pcePcepSessUp NOTIFICATION-TYPE OBJECTS { pcePcepSessState, pcePcepSessStateLastChange } STATUS current DESCRIPTION "This notification is sent when the value of pcePcepSessState enters the sessionUp state." ::= { pcePcepNotifications 1 } pcePcepSessDown NOTIFICATION-TYPE OBJECTS { pcePcepSessState, pcePcepSessStateLastChange } STATUS current DESCRIPTION "This notification is sent when the value of pcePcepSessState leaves the sessionUp state." ::= { pcePcepNotifications 2 } pcePcepSessLocalOverload NOTIFICATION-TYPE OBJECTS { pcePcepSessOverloaded, pcePcepSessOverloadTime } STATUS current DESCRIPTION "This notification is sent when the local PCEP entity enters overload state for a peer." ::= { pcePcepNotifications 3 } pcePcepSessLocalOverloadClear NOTIFICATION-TYPE OBJECTS { pcePcepSessOverloaded } STATUS current DESCRIPTION "This notification is sent when the local PCEP entity leaves overload state for a peer." ::= { pcePcepNotifications 4 } pcePcepSessPeerOverload NOTIFICATION-TYPE OBJECTS { pcePcepSessPeerOverloaded, pcePcepSessPeerOverloadTime } STATUS current DESCRIPTION "This notification is sent when a peer enters overload state." ::= { pcePcepNotifications 5 } pcePcepSessPeerOverloadClear NOTIFICATION-TYPE OBJECTS { pcePcepSessPeerOverloaded } STATUS current DESCRIPTION "This notification is sent when a peer leaves overload state." ::= { pcePcepNotifications 6 } -- -- Module Conformance Statement -- pcePcepCompliances OBJECT IDENTIFIER ::= { pcePcepConformance 1 } pcePcepGroups OBJECT IDENTIFIER ::= { pcePcepConformance 2 } -- -- Read-Only Compliance -- pcePcepModuleReadOnlyCompliance MODULE-COMPLIANCE STATUS current DESCRIPTION "The module is implemented with support for read-only. In other words, only monitoring is available by implementing this MODULE-COMPLIANCE." MODULE -- this module MANDATORY-GROUPS { pcePcepGeneralGroup, pcePcepNotificationsGroup } OBJECT pcePcepEntityAddrType SYNTAX InetAddressType { unknown(0), ipv4(1), ipv6(2) } DESCRIPTION "Only unknown(0), ipv4(1), and ipv6(2) support is required." -- The following restriction is commented out because of a limitation -- in SMIv2 which does not allow index objects to be restricted in -- scope. Nevertheless, this object is intended to be restricted in -- scope, as follows. -- -- OBJECT pcePcepPeerAddrType -- SYNTAX InetAddressType { unknown(0), ipv4(1), ipv6(2) } -- DESCRIPTION "Only unknown(0), ipv4(1), and ipv6(2) support -- is required." ::= { pcePcepCompliances 1 } -- units of conformance pcePcepGeneralGroup OBJECT-GROUP OBJECTS { pcePcepEntityAdminStatus, pcePcepEntityOperStatus, pcePcepEntityAddrType, pcePcepEntityAddr, pcePcepEntityConnectTimer, pcePcepEntityConnectMaxRetry, pcePcepEntityInitBackoffTimer, pcePcepEntityMaxBackoffTimer, pcePcepEntityOpenWaitTimer, pcePcepEntityKeepWaitTimer, pcePcepEntityKeepAliveTimer, pcePcepEntityDeadTimer, pcePcepEntityAllowNegotiation, pcePcepEntityMaxKeepAliveTimer, pcePcepEntityMaxDeadTimer, pcePcepEntityMinKeepAliveTimer, pcePcepEntityMinDeadTimer, pcePcepEntitySyncTimer, pcePcepEntityRequestTimer, pcePcepEntityMaxSessions, pcePcepEntityMaxUnknownReqs, pcePcepEntityMaxUnknownMsgs, pcePcepPeerRole, pcePcepPeerDiscontinuityTime, pcePcepPeerInitiateSession, pcePcepPeerSessionExists, pcePcepPeerNumSessSetupOK, pcePcepPeerNumSessSetupFail, pcePcepPeerSessionUpTime, pcePcepPeerSessionFailTime, pcePcepPeerSessionFailUpTime, pcePcepPeerAvgRspTime, pcePcepPeerLWMRspTime, pcePcepPeerHWMRspTime, pcePcepPeerNumPCReqSent, pcePcepPeerNumPCReqRcvd, pcePcepPeerNumPCRepSent, pcePcepPeerNumPCRepRcvd, pcePcepPeerNumPCErrSent, pcePcepPeerNumPCErrRcvd, pcePcepPeerNumPCNtfSent, pcePcepPeerNumPCNtfRcvd, pcePcepPeerNumKeepaliveSent, pcePcepPeerNumKeepaliveRcvd, pcePcepPeerNumUnknownRcvd, pcePcepPeerNumCorruptRcvd, pcePcepPeerNumReqSent, pcePcepPeerNumSvecSent, pcePcepPeerNumSvecReqSent, pcePcepPeerNumReqSentPendRep, pcePcepPeerNumReqSentEroRcvd, pcePcepPeerNumReqSentNoPathRcvd, pcePcepPeerNumReqSentCancelRcvd, pcePcepPeerNumReqSentErrorRcvd, pcePcepPeerNumReqSentTimeout, pcePcepPeerNumReqSentCancelSent, pcePcepPeerNumReqSentClosed, pcePcepPeerNumReqRcvd, pcePcepPeerNumSvecRcvd, pcePcepPeerNumSvecReqRcvd, pcePcepPeerNumReqRcvdPendRep, pcePcepPeerNumReqRcvdEroSent, pcePcepPeerNumReqRcvdNoPathSent, pcePcepPeerNumReqRcvdCancelSent, pcePcepPeerNumReqRcvdErrorSent, pcePcepPeerNumReqRcvdCancelRcvd, pcePcepPeerNumReqRcvdClosed, pcePcepPeerNumRepRcvdUnknown, pcePcepPeerNumReqRcvdUnknown, pcePcepSessStateLastChange, pcePcepSessState, pcePcepSessConnectRetry, pcePcepSessLocalID, pcePcepSessRemoteID, pcePcepSessKeepaliveTimer, pcePcepSessPeerKeepaliveTimer, pcePcepSessDeadTimer, pcePcepSessPeerDeadTimer, pcePcepSessKAHoldTimeRem, pcePcepSessOverloaded, pcePcepSessOverloadTime, pcePcepSessPeerOverloaded, pcePcepSessPeerOverloadTime, pcePcepSessDiscontinuityTime, pcePcepSessAvgRspTime, pcePcepSessLWMRspTime, pcePcepSessHWMRspTime, pcePcepSessNumPCReqSent, pcePcepSessNumPCReqRcvd, pcePcepSessNumPCRepSent, pcePcepSessNumPCRepRcvd, pcePcepSessNumPCErrSent, pcePcepSessNumPCErrRcvd, pcePcepSessNumPCNtfSent, pcePcepSessNumPCNtfRcvd, pcePcepSessNumKeepaliveSent, pcePcepSessNumKeepaliveRcvd, pcePcepSessNumUnknownRcvd, pcePcepSessNumCorruptRcvd, pcePcepSessNumReqSent, pcePcepSessNumSvecSent, pcePcepSessNumSvecReqSent, pcePcepSessNumReqSentPendRep, pcePcepSessNumReqSentEroRcvd, pcePcepSessNumReqSentNoPathRcvd, pcePcepSessNumReqSentCancelRcvd, pcePcepSessNumReqSentErrorRcvd, pcePcepSessNumReqSentTimeout, pcePcepSessNumReqSentCancelSent, pcePcepSessNumReqRcvd, pcePcepSessNumSvecRcvd, pcePcepSessNumSvecReqRcvd, pcePcepSessNumReqRcvdPendRep, pcePcepSessNumReqRcvdEroSent, pcePcepSessNumReqRcvdNoPathSent, pcePcepSessNumReqRcvdCancelSent, pcePcepSessNumReqRcvdErrorSent, pcePcepSessNumReqRcvdCancelRcvd, pcePcepSessNumRepRcvdUnknown, pcePcepSessNumReqRcvdUnknown, pcePcepNotificationsMaxRate } STATUS current DESCRIPTION "Objects that apply to all PCEP MIB module implementations." ::= { pcePcepGroups 1 } pcePcepNotificationsGroup NOTIFICATION-GROUP NOTIFICATIONS { pcePcepSessUp, pcePcepSessDown, pcePcepSessLocalOverload, pcePcepSessLocalOverloadClear, pcePcepSessPeerOverload, pcePcepSessPeerOverloadClear } STATUS current DESCRIPTION "The notifications for a PCEP MIB module implementation." ::= { pcePcepGroups 2 } END 5. Security Considerations The pcePcepNotificationsMaxRate object defined in this MIB module has a MAX-ACCESS clause of read-write. Such objects may be considered sensitive or vulnerable in some network environments. The support for SET operations in a non-secure environment without proper protection opens devices to attack. In particular, pcePcepNotificationsMaxRate may be used improperly to stop notifications being issued or to permit a flood of notifications to be sent to the management agent at a high rate. All the readable objects in this MIB module (i.e., objects with a MAX-ACCESS other than not-accessible) may be considered sensitive or vulnerable in some network environments. It is thus important to control even GET and/or NOTIFY access to these objects and possibly to even encrypt the values of these objects when sending them over the network via SNMP. The sensitivity/vulnerability arises because, collectively, these objects provide information about the amount and frequency of path computation requests and responses within the network and can reveal some aspects of its configuration. SNMP versions prior to SNMPv3 did not include adequate security. Even if the network itself is secure (for example by using IPsec), there is no control as to who on the secure network is allowed to access and GET/SET (read/change/create/delete) the objects in this MIB module. Implementations SHOULD provide the security features described by the SNMPv3 framework (see [RFC3410]), and implementations claiming compliance to the SNMPv3 standard MUST include full support for authentication and privacy via the User-based Security Model (USM) [RFC3414] with the AES cipher algorithm [RFC3826]. Implementations MAY also provide support for the Transport Security Model (TSM) [RFC5591] in combination with a secure transport such as SSH [RFC5592] or TLS/DTLS [RFC6353]. Further, deployment of SNMP versions prior to SNMPv3 is NOT RECOMMENDED. Instead, it is RECOMMENDED to deploy SNMPv3 and to enable cryptographic security. It is then a customer/operator responsibility to ensure that the SNMP entity giving access to an instance of this MIB module is properly configured to give access to the objects only to those principals (users) that have legitimate rights to indeed GET or SET (change/create/delete) them. 6. IANA Considerations The MIB module in this document uses the following IANA-assigned OBJECT IDENTIFIER values recorded in the SMI Numbers registry: Descriptor OBJECT IDENTIFIER value ---------- ----------------------- pcePcepMIB { mib-2 227 } 7. References 7.1. Normative References [RFC2119] Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, March 1997, <http://www.rfc-editor.org/info/rfc2119>. [RFC2578] McCloghrie, K., Ed., Perkins, D., Ed., and J. Schoenwaelder, Ed., "Structure of Management Information Version 2 (SMIv2)", STD 58, RFC 2578, April 1999, <http://www.rfc-editor.org/info/rfc2578>. [RFC2579] McCloghrie, K., Ed., Perkins, D., Ed., and J. Schoenwaelder, Ed., "Textual Conventions for SMIv2", STD 58, RFC 2579, April 1999, <http://www.rfc-editor.org/info/rfc2579>. [RFC2580] McCloghrie, K., Perkins, D., and J. Schoenwaelder, "Conformance Statements for SMIv2", STD 58, RFC 2580, April 1999, <http://www.rfc-editor.org/info/rfc2580>. [RFC3414] Blumenthal, U. and B. Wijnen, "User-based Security Model (USM) for version 3 of the Simple Network Management Protocol (SNMPv3)", STD 62, RFC 3414, December 2002, <http://www.rfc-editor.org/info/rfc3414>. [RFC3826] Blumenthal, U., Maino, F., and K. McCloghrie, "The Advanced Encryption Standard (AES) Cipher Algorithm in the SNMP User-based Security Model", RFC 3826, June 2004, <http://www.rfc-editor.org/info/rfc3826>. [RFC4001] Daniele, M., Haberman, B., Routhier, S., and J. Schoenwaelder, "Textual Conventions for Internet Network Addresses", RFC 4001, February 2005, <http://www.rfc-editor.org/info/rfc4001>. [RFC5440] Vasseur, JP. and JL. Le Roux, "Path Computation Element (PCE) Communication Protocol (PCEP)", RFC 5440, March 2009, <http://www.rfc-editor.org/info/rfc5440>. [RFC5591] Harrington, D. and W. Hardaker, "Transport Security Model for the Simple Network Management Protocol (SNMP)", STD 78, RFC 5591, June 2009, <http://www.rfc-editor.org/info/rfc5591>. [RFC5592] Harrington, D., Salowey, J., and W. Hardaker, "Secure Shell Transport Model for the Simple Network Management Protocol (SNMP)", RFC 5592, June 2009, <http://www.rfc-editor.org/info/rfc5592>. [RFC6353] Hardaker, W., "Transport Layer Security (TLS) Transport Model for the Simple Network Management Protocol (SNMP)", STD 78, RFC 6353, July 2011, <http://www.rfc-editor.org/info/rfc6353>. 7.2. Informative References [RFC3410] Case, J., Mundy, R., Partain, D., and B. Stewart, "Introduction and Applicability Statements for Internet- Standard Management Framework", RFC 3410, December 2002, <http://www.rfc-editor.org/info/rfc3410>. [RFC4655] Farrel, A., Vasseur, J., and J. Ash, "A Path Computation Element (PCE)-Based Architecture", RFC 4655, August 2006, <http://www.rfc-editor.org/info/rfc4655>. Appendix A. PCEP MIB Module Example This example considers the set of PCC/PCE relationships shown in the following figure. The example shows the contents of the PCEP MIB module as read at PCE2 and PCCb. PCE1---PCE2 PCE3 | / | / | | / | / | PCCa/ PCCb PCCc The IP addresses of the PCE speakers in this diagram are given in the following table. +------+-------------+ | PCE1 | 1.1.1.1 | +------+-------------+ | PCE2 | 2.2.2.2 | +------+-------------+ | PCE3 | 3.3.3.3 | +------+-------------+ | PCCa | 11.11.11.11 | +------+-------------+ | PCCb | 22.22.22.22 | +------+-------------+ | PCCc | 33.33.33.33 | +------+-------------+ In this example, the PCEP session between PCCb and PCE3 is currently down. A.1. Contents of PCEP MIB Module at PCE2 At PCE2, there is a single local PCEP entity that has three peers (PCCa, PCCb, and PCE1). There is a session active to all of these peers. The contents of the PCEP MIB module as read at PCE2 are as follows. In pcePcepEntityTable { pcePcepEntityIndex 1, pcePcepEntityAdminStatus adminStatusUp(1), pcePcepEntityOperStatus operStatusUp(1), pcePcepEntityAddrType ipv4(1), pcePcepEntityAddr 2.2.2.2, -- PCE2 pcePcepEntityConnectTimer 60, pcePcepEntityConnectMaxRetry 5, pcePcepEntityInitBackoffTimer 30, pcePcepEntityMaxBackoffTimer 3600, pcePcepEntityOpenWaitTimer 60, pcePcepEntityKeepWaitTimer 60, pcePcepEntityKeepAliveTimer 1, pcePcepEntityDeadTimer 4, pcePcepEntityAllowNegotiation true(1), pcePcepEntityMaxKeepAliveTimer 60, pcePcepEntityMaxDeadTimer 240, pcePcepEntityMinKeepAliveTimer 1, pcePcepEntityMinDeadTimer 4, pcePcepEntitySyncTimer 60, pcePcepEntityRequestTimer 120, pcePcepEntityMaxSessions 999, pcePcepEntityMaxUnknownReqs 5, pcePcepEntityMaxUnknownMsgs 5 } In pcePcepPeerTable { pcePcepPeerAddrType ipv4(1), --PCE1 pcePcepPeerAddr 1.1.1.1, pcePcepPeerRole pccAndPce(3), pcePcepPeerDiscontinuityTime TimeStamp, pcePcepPeerInitiateSession true(1), pcePcepPeerSessionExists true(1), pcePcepPeerNumSessSetupOK 1, pcePcepPeerNumSessSetupFail 0, pcePcepPeerSessionUpTime TimeStamp, pcePcepPeerSessionFailTime 0, pcePcepPeerSessionFailUpTime TimeStamp, pcePcepPeerAvgRspTime 0, pcePcepPeerLWMRspTime 0, pcePcepPeerHWMRspTime 0, pcePcepPeerNumPCReqSent 0, pcePcepPeerNumPCReqRcvd 0, pcePcepPeerNumPCRepSent 0, pcePcepPeerNumPCRepRcvd 0, pcePcepPeerNumPCErrSent 0, pcePcepPeerNumPCErrRcvd 0, pcePcepPeerNumPCNtfSent 0, pcePcepPeerNumPCNtfRcvd 0, pcePcepPeerNumKeepaliveSent 123, pcePcepPeerNumKeepaliveRcvd 123, pcePcepPeerNumUnknownRcvd 0, pcePcepPeerNumCorruptRcvd 0, pcePcepPeerNumReqSent 0, pcePcepPeerNumSvecSent 0, pcePcepPeerNumSvecReqSent 0, pcePcepPeerNumReqSentPendRep 0, pcePcepPeerNumReqSentEroRcvd 0, pcePcepPeerNumReqSentNoPathRcvd 0, pcePcepPeerNumReqSentCancelRcvd 0, pcePcepPeerNumReqSentErrorRcvd 0, pcePcepPeerNumReqSentTimeout 0, pcePcepPeerNumReqSentCancelSent 0, pcePcepPeerNumReqSentClosed 0, pcePcepPeerNumReqRcvd 0, pcePcepPeerNumSvecRcvd 0, pcePcepPeerNumSvecReqRcvd 0, pcePcepPeerNumReqRcvdPendRep 0, pcePcepPeerNumReqRcvdEroSent 0, pcePcepPeerNumReqRcvdNoPathSent 0, pcePcepPeerNumReqRcvdCancelSent 0, pcePcepPeerNumReqRcvdErrorSent 0, pcePcepPeerNumReqRcvdCancelRcvd 0, pcePcepPeerNumReqRcvdClosed 0, pcePcepPeerNumRepRcvdUnknown 0, pcePcepPeerNumReqRcvdUnknown 0 }, { pcePcepPeerAddrType ipv4(1), --PCCa pcePcepPeerAddr 11.11.11.11, pcePcepPeerRole pcc(1), pcePcepPeerDiscontinuityTime TimeStamp, pcePcepPeerInitiateSession false(0), pcePcepPeerSessionExists true(1), pcePcepPeerNumSessSetupOK 1, pcePcepPeerNumSessSetupFail 0, pcePcepPeerSessionUpTime TimeStamp, pcePcepPeerSessionFailTime 0, pcePcepPeerSessionFailUpTime TimeStamp, pcePcepPeerAvgRspTime 200, pcePcepPeerLWMRspTime 100, pcePcepPeerHWMRspTime 300, pcePcepPeerNumPCReqSent 0, pcePcepPeerNumPCReqRcvd 3, pcePcepPeerNumPCRepSent 3, pcePcepPeerNumPCRepRcvd 0, pcePcepPeerNumPCErrSent 0, pcePcepPeerNumPCErrRcvd 0, pcePcepPeerNumPCNtfSent 0, pcePcepPeerNumPCNtfRcvd 0, pcePcepPeerNumKeepaliveSent 123, pcePcepPeerNumKeepaliveRcvd 123, pcePcepPeerNumUnknownRcvd 0, pcePcepPeerNumCorruptRcvd 0, pcePcepPeerNumReqSent 0, pcePcepPeerNumSvecSent 0, pcePcepPeerNumSvecReqSent 0, pcePcepPeerNumReqSentPendRep 0, pcePcepPeerNumReqSentEroRcvd 0, pcePcepPeerNumReqSentNoPathRcvd 0, pcePcepPeerNumReqSentCancelRcvd 0, pcePcepPeerNumReqSentErrorRcvd 0, pcePcepPeerNumReqSentTimeout 0, pcePcepPeerNumReqSentCancelSent 0, pcePcepPeerNumReqSentClosed 0, pcePcepPeerNumReqRcvd 3, pcePcepPeerNumSvecRcvd 0, pcePcepPeerNumSvecReqRcvd 0, pcePcepPeerNumReqRcvdPendRep 0, pcePcepPeerNumReqRcvdEroSent 3, pcePcepPeerNumReqRcvdNoPathSent 0, pcePcepPeerNumReqRcvdCancelSent 0, pcePcepPeerNumReqRcvdErrorSent 0, pcePcepPeerNumReqRcvdCancelRcvd 0, pcePcepPeerNumReqRcvdClosed 0, pcePcepPeerNumRepRcvdUnknown 0, pcePcepPeerNumReqRcvdUnknown 0 }, { pcePcepPeerAddrType ipv4(1), -- PCCb pcePcepPeerAddr 22.22.22.22, pcePcepPeerRole pcc(1), pcePcepPeerDiscontinuityTime TimeStamp, pcePcepPeerInitiateSession true(1), pcePcepPeerSessionExists true(1), pcePcepPeerNumSessSetupOK 1, pcePcepPeerNumSessSetupFail 0, pcePcepPeerSessionUpTime TimeStamp, pcePcepPeerSessionFailTime 0, pcePcepPeerSessionFailUpTime TimeStamp, pcePcepPeerAvgRspTime 200, pcePcepPeerLWMRspTime 100, pcePcepPeerHWMRspTime 300, pcePcepPeerNumPCReqSent 0, pcePcepPeerNumPCReqRcvd 4, pcePcepPeerNumPCRepSent 4, pcePcepPeerNumPCRepRcvd 0, pcePcepPeerNumPCErrSent 0, pcePcepPeerNumPCErrRcvd 0, pcePcepPeerNumPCNtfSent 0, pcePcepPeerNumPCNtfRcvd 0, pcePcepPeerNumKeepaliveSent 123, pcePcepPeerNumKeepaliveRcvd 123, pcePcepPeerNumUnknownRcvd 0, pcePcepPeerNumCorruptRcvd 0, pcePcepPeerNumReqSent 0, pcePcepPeerNumSvecSent 0, pcePcepPeerNumSvecReqSent 0, pcePcepPeerNumReqSentPendRep 0, pcePcepPeerNumReqSentEroRcvd 0, pcePcepPeerNumReqSentNoPathRcvd 0, pcePcepPeerNumReqSentCancelRcvd 0, pcePcepPeerNumReqSentErrorRcvd 0, pcePcepPeerNumReqSentTimeout 0, pcePcepPeerNumReqSentCancelSent 0, pcePcepPeerNumReqSentClosed 0, pcePcepPeerNumReqRcvd 4, pcePcepPeerNumSvecRcvd 0, pcePcepPeerNumSvecReqRcvd 0, pcePcepPeerNumReqRcvdPendRep 0, pcePcepPeerNumReqRcvdEroSent 3, pcePcepPeerNumReqRcvdNoPathSent 1, pcePcepPeerNumReqRcvdCancelSent 0, pcePcepPeerNumReqRcvdErrorSent 0, pcePcepPeerNumReqRcvdCancelRcvd 0, pcePcepPeerNumReqRcvdClosed 0, pcePcepPeerNumRepRcvdUnknown 0, pcePcepPeerNumReqRcvdUnknown 0 } In pcePcepSessTable { pcePcepSessInitiator local(1), --PCE1 pcePcepSessStateLastChange TimeStamp, pcePcepSessState sessionUp(4), pcePcepSessConnectRetry 0, pcePcepSessLocalID 1, pcePcepSessRemoteID 2, pcePcepSessKeepaliveTimer 1, pcePcepSessPeerKeepaliveTimer 1, pcePcepSessDeadTimer 4, pcePcepSessPeerDeadTimer 4, pcePcepSessKAHoldTimeRem 1, pcePcepSessOverloaded false(0), pcePcepSessOverloadTime 0, pcePcepSessPeerOverloaded false(0), pcePcepSessPeerOverloadTime 0, pcePcepSessDiscontinuityTime TimeStamp, pcePcepSessAvgRspTime 0, pcePcepSessLWMRspTime 0, pcePcepSessHWMRspTime 0, pcePcepSessNumPCReqSent 0, pcePcepSessNumPCReqRcvd 0, pcePcepSessNumPCRepSent 0, pcePcepSessNumPCRepRcvd 0, pcePcepSessNumPCErrSent 0, pcePcepSessNumPCErrRcvd 0, pcePcepSessNumPCNtfSent 0, pcePcepSessNumPCNtfRcvd 0, pcePcepSessNumKeepaliveSent 123, pcePcepSessNumKeepaliveRcvd 123, pcePcepSessNumUnknownRcvd 0, pcePcepSessNumCorruptRcvd 0, pcePcepSessNumReqSent 0, pcePcepSessNumSvecSent 0, pcePcepSessNumSvecReqSent 0, pcePcepSessNumReqSentPendRep 0, pcePcepSessNumReqSentEroRcvd 0, pcePcepSessNumReqSentNoPathRcvd 0, pcePcepSessNumReqSentCancelRcvd 0, pcePcepSessNumReqSentErrorRcvd 0, pcePcepSessNumReqSentTimeout 0, pcePcepSessNumReqSentCancelSent 0, pcePcepSessNumReqRcvd 0, pcePcepSessNumSvecRcvd 0, pcePcepSessNumSvecReqRcvd 0, pcePcepSessNumReqRcvdPendRep 0, pcePcepSessNumReqRcvdEroSent 0, pcePcepSessNumReqRcvdNoPathSent 0, pcePcepSessNumReqRcvdCancelSent 0, pcePcepSessNumReqRcvdErrorSent 0, pcePcepSessNumReqRcvdCancelRcvd 0, pcePcepSessNumRepRcvdUnknown 0, pcePcepSessNumReqRcvdUnknown 0 }, { pcePcepSessInitiator remote(2), --PCCa pcePcepSessStateLastChange TimeStamp, pcePcepSessState sessionUp(4), pcePcepSessConnectRetry 0, pcePcepSessLocalID 2, pcePcepSessRemoteID 1, pcePcepSessKeepaliveTimer 1, pcePcepSessPeerKeepaliveTimer 1, pcePcepSessDeadTimer 4, pcePcepSessPeerDeadTimer 4, pcePcepSessKAHoldTimeRem 1, pcePcepSessOverloaded false(0), pcePcepSessOverloadTime 0, pcePcepSessPeerOverloaded false(0), pcePcepSessPeerOverloadTime 0, pcePcepSessDiscontinuityTime TimeStamp, pcePcepSessAvgRspTime 200, pcePcepSessLWMRspTime 100, pcePcepSessHWMRspTime 300, pcePcepSessNumPCReqSent 0, pcePcepSessNumPCReqRcvd 1, pcePcepSessNumPCRepSent 1, pcePcepSessNumPCRepRcvd 0, pcePcepSessNumPCErrSent 0, pcePcepSessNumPCErrRcvd 0, pcePcepSessNumPCNtfSent 0, pcePcepSessNumPCNtfRcvd 0, pcePcepSessNumKeepaliveSent 123, pcePcepSessNumKeepaliveRcvd 123, pcePcepSessNumUnknownRcvd 0, pcePcepSessNumCorruptRcvd 0, pcePcepSessNumReqSent 0, pcePcepSessNumSvecSent 0, pcePcepSessNumSvecReqSent 0, pcePcepSessNumReqSentPendRep 0, pcePcepSessNumReqSentEroRcvd 0, pcePcepSessNumReqSentNoPathRcvd 0, pcePcepSessNumReqSentCancelRcvd 0, pcePcepSessNumReqSentErrorRcvd 0, pcePcepSessNumReqSentTimeout 0, pcePcepSessNumReqSentCancelSent 0, pcePcepSessNumReqRcvd 3, pcePcepSessNumSvecRcvd 0, pcePcepSessNumSvecReqRcvd 0, pcePcepSessNumReqRcvdPendRep 0, pcePcepSessNumReqRcvdEroSent 3, pcePcepSessNumReqRcvdNoPathSent 0, pcePcepSessNumReqRcvdCancelSent 0, pcePcepSessNumReqRcvdErrorSent 0, pcePcepSessNumReqRcvdCancelRcvd 0, pcePcepSessNumRepRcvdUnknown 0, pcePcepSessNumReqRcvdUnknown 0 }, { pcePcepSessInitiator remote(2), --PCCb pcePcepSessStateLastChange TimeStamp, pcePcepSessState sessionUp(4), pcePcepSessConnectRetry 0, pcePcepSessLocalID 2, pcePcepSessRemoteID 1, pcePcepSessKeepaliveTimer 1, pcePcepSessPeerKeepaliveTimer 1, pcePcepSessDeadTimer 4, pcePcepSessPeerDeadTimer 4, pcePcepSessKAHoldTimeRem 1, pcePcepSessOverloaded false(0), pcePcepSessOverloadTime 0, pcePcepSessPeerOverloaded false(0), pcePcepSessPeerOverloadTime 0, pcePcepSessDiscontinuityTime TimeStamp, pcePcepSessAvgRspTime 200, pcePcepSessLWMRspTime 100, pcePcepSessHWMRspTime 300, pcePcepSessNumPCReqSent 0, pcePcepSessNumPCReqRcvd 4, pcePcepSessNumPCRepSent 4, pcePcepSessNumPCRepRcvd 0, pcePcepSessNumPCErrSent 0, pcePcepSessNumPCErrRcvd 0, pcePcepSessNumPCNtfSent 0, pcePcepSessNumPCNtfRcvd 0, pcePcepSessNumKeepaliveSent 123, pcePcepSessNumKeepaliveRcvd 123, pcePcepSessNumUnknownRcvd 0, pcePcepSessNumCorruptRcvd 0, pcePcepSessNumReqSent 0, pcePcepSessNumSvecSent 0, pcePcepSessNumSvecReqSent 0, pcePcepSessNumReqSentPendRep 0, pcePcepSessNumReqSentEroRcvd 0, pcePcepSessNumReqSentNoPathRcvd 0, pcePcepSessNumReqSentCancelRcvd 0, pcePcepSessNumReqSentErrorRcvd 0, pcePcepSessNumReqSentTimeout 0, pcePcepSessNumReqSentCancelSent 0, pcePcepSessNumReqRcvd 4, pcePcepSessNumSvecRcvd 0, pcePcepSessNumSvecReqRcvd 0, pcePcepSessNumReqRcvdPendRep 0, pcePcepSessNumReqRcvdEroSent 3, pcePcepSessNumReqRcvdNoPathSent 1, pcePcepSessNumReqRcvdCancelSent 0, pcePcepSessNumReqRcvdErrorSent 0, pcePcepSessNumReqRcvdCancelRcvd 0, pcePcepSessNumRepRcvdUnknown 0, pcePcepSessNumReqRcvdUnknown 0 } A.2. Contents of PCEP MIB Module at PCCb At PCCb, there is a single local PCEP entity that has two peers (PCE2 and PCE3). There is a session active to PCE2, but the session to PCE3 is currently down. The contents of the PCEP MIB module as read at PCCb are as follows. In pcePcepEntityTable { pcePcepEntityIndex 1, pcePcepEntityAdminStatus adminStatusUp(1), pcePcepEntityOperStatus operStatusUp(1), pcePcepEntityAddrType ipv4(1), pcePcepEntityAddr 22.22.22.22, -- PCCb pcePcepEntityConnectTimer 60, pcePcepEntityConnectMaxRetry 5, pcePcepEntityInitBackoffTimer 30, pcePcepEntityMaxBackoffTimer 3600, pcePcepEntityOpenWaitTimer 60, pcePcepEntityKeepWaitTimer 60, pcePcepEntityKeepAliveTimer 1, pcePcepEntityDeadTimer 4, pcePcepEntityAllowNegotiation true(1), pcePcepEntityMaxKeepAliveTimer 60, pcePcepEntityMaxDeadTimer 240, pcePcepEntityMinKeepAliveTimer 1, pcePcepEntityMinDeadTimer 4, pcePcepEntitySyncTimer 60, pcePcepEntityRequestTimer 120, pcePcepEntityMaxSessions 999, pcePcepEntityMaxUnknownReqs 5, pcePcepEntityMaxUnknownMsgs 5 } In pcePcepPeerTable { pcePcepPeerAddrType ipv4(1), --PCE2 pcePcepPeerAddr 2.2.2.2, pcePcepPeerRole pce(2), pcePcepPeerDiscontinuityTime TimeStamp, pcePcepPeerInitiateSession true(1), pcePcepPeerSessionExists true(1)), pcePcepPeerNumSessSetupOK 0, pcePcepPeerNumSessSetupFail 1, pcePcepPeerSessionUpTime TimeStamp, pcePcepPeerSessionFailTime TimeStamp, pcePcepPeerSessionFailUpTime TimeStamp, pcePcepPeerAvgRspTime 0, pcePcepPeerLWMRspTime 0, pcePcepPeerHWMRspTime 0, pcePcepPeerNumPCReqSent 4, pcePcepPeerNumPCReqRcvd 0, pcePcepPeerNumPCRepSent 0, pcePcepPeerNumPCRepRcvd 4, pcePcepPeerNumPCErrSent 0, pcePcepPeerNumPCErrRcvd 0, pcePcepPeerNumPCNtfSent 0, pcePcepPeerNumPCNtfRcvd 0, pcePcepPeerNumKeepaliveSent 0, pcePcepPeerNumKeepaliveRcvd 0, pcePcepPeerNumUnknownRcvd 0, pcePcepPeerNumCorruptRcvd 0, pcePcepPeerNumReqSent 4, pcePcepPeerNumSvecSent 0, pcePcepPeerNumSvecReqSent 0, pcePcepPeerNumReqSentPendRep 0, pcePcepPeerNumReqSentEroRcvd 3, pcePcepPeerNumReqSentNoPathRcvd 1, pcePcepPeerNumReqSentCancelRcvd 0, pcePcepPeerNumReqSentErrorRcvd 0, pcePcepPeerNumReqSentTimeout 0, pcePcepPeerNumReqSentCancelSent 0, pcePcepPeerNumReqSentClosed 0, pcePcepPeerNumReqRcvd 0, pcePcepPeerNumSvecRcvd 0, pcePcepPeerNumSvecReqRcvd 0, pcePcepPeerNumReqRcvdPendRep 0, pcePcepPeerNumReqRcvdEroSent 0, pcePcepPeerNumReqRcvdNoPathSent 0, pcePcepPeerNumReqRcvdCancelSent 0, pcePcepPeerNumReqRcvdErrorSent 0, pcePcepPeerNumReqRcvdCancelRcvd 0, pcePcepPeerNumReqRcvdClosed 0, pcePcepPeerNumRepRcvdUnknown 0, pcePcepPeerNumReqRcvdUnknown 0 }, { pcePcepPeerAddrType ipv4(1), --PCE3 pcePcepPeerAddr 3.3.3.3, pcePcepPeerRole pce(2), pcePcepPeerDiscontinuityTime TimeStamp, pcePcepPeerInitiateSession true(1), pcePcepPeerSessionExists false(0), pcePcepPeerNumSessSetupOK 1, pcePcepPeerNumSessSetupFail 0, pcePcepPeerSessionUpTime TimeStamp, pcePcepPeerSessionFailTime TimeStamp, pcePcepPeerSessionFailUpTime TimeStamp, pcePcepPeerAvgRspTime 200, pcePcepPeerLWMRspTime 100, pcePcepPeerHWMRspTime 300, pcePcepPeerNumPCReqSent 4, pcePcepPeerNumPCReqRcvd 0, pcePcepPeerNumPCRepSent 0, pcePcepPeerNumPCRepRcvd 3, pcePcepPeerNumPCErrSent 0, pcePcepPeerNumPCErrRcvd 0, pcePcepPeerNumPCNtfSent 0, pcePcepPeerNumPCNtfRcvd 0, pcePcepPeerNumKeepaliveSent 123, pcePcepPeerNumKeepaliveRcvd 123, pcePcepPeerNumUnknownRcvd 0, pcePcepPeerNumCorruptRcvd 0, pcePcepPeerNumReqSent 4, pcePcepPeerNumSvecSent 0, pcePcepPeerNumSvecReqSent 0, pcePcepPeerNumReqSentPendRep 0, pcePcepPeerNumReqSentEroRcvd 3, pcePcepPeerNumReqSentNoPathRcvd 0, pcePcepPeerNumReqSentCancelRcvd 0, pcePcepPeerNumReqSentErrorRcvd 0, pcePcepPeerNumReqSentTimeout 0, pcePcepPeerNumReqSentCancelSent 0, pcePcepPeerNumReqSentClosed 1, pcePcepPeerNumReqRcvd 0, pcePcepPeerNumSvecRcvd 0, pcePcepPeerNumSvecReqRcvd 0, pcePcepPeerNumReqRcvdPendRep 0, pcePcepPeerNumReqRcvdEroSent 0, pcePcepPeerNumReqRcvdNoPathSent 0, pcePcepPeerNumReqRcvdCancelSent 0, pcePcepPeerNumReqRcvdErrorSent 0, pcePcepPeerNumReqRcvdCancelRcvd 0, pcePcepPeerNumReqRcvdClosed 0, pcePcepPeerNumRepRcvdUnknown 0, pcePcepPeerNumReqRcvdUnknown 0 } In pcePcepSessTable { pcePcepSessInitiator local(1), --PCE2 pcePcepSessStateLastChange TimeStamp, pcePcepSessState sessionUp(4), pcePcepSessConnectRetry 0, pcePcepSessLocalID 1, pcePcepSessRemoteID 1, pcePcepSessKeepaliveTimer 1, pcePcepSessPeerKeepaliveTimer 1, pcePcepSessDeadTimer 4, pcePcepSessPeerDeadTimer 4, pcePcepSessKAHoldTimeRem 1, pcePcepSessOverloaded false(0), pcePcepSessOverloadTime 0, pcePcepSessPeerOverloaded false(0), pcePcepSessPeerOverloadTime 0, pcePcepSessDiscontinuityTime TimeStamp, pcePcepSessAvgRspTime 200, pcePcepSessLWMRspTime 100, pcePcepSessHWMRspTime 300, pcePcepSessNumPCReqSent 4, pcePcepSessNumPCReqRcvd 0, pcePcepSessNumPCRepSent 0, pcePcepSessNumPCRepRcvd 4, pcePcepSessNumPCErrSent 0, pcePcepSessNumPCErrRcvd 0, pcePcepSessNumPCNtfSent 0, pcePcepSessNumPCNtfRcvd 0, pcePcepSessNumKeepaliveSent 123, pcePcepSessNumKeepaliveRcvd 123, pcePcepSessNumUnknownRcvd 0, pcePcepSessNumCorruptRcvd 0, pcePcepSessNumReqSent 4, pcePcepSessNumSvecSent 0, pcePcepSessNumSvecReqSent 0, pcePcepSessNumReqSentPendRep 0, pcePcepSessNumReqSentEroRcvd 3, pcePcepSessNumReqSentNoPathRcvd 1, pcePcepSessNumReqSentCancelRcvd 0, pcePcepSessNumReqSentErrorRcvd 0, pcePcepSessNumReqSentTimeout 0, pcePcepSessNumReqSentCancelSent 0, pcePcepSessNumReqRcvd 0, pcePcepSessNumSvecRcvd 0, pcePcepSessNumSvecReqRcvd 0, pcePcepSessNumReqRcvdPendRep 0, pcePcepSessNumReqRcvdEroSent 0, pcePcepSessNumReqRcvdNoPathSent 0, pcePcepSessNumReqRcvdCancelSent 0, pcePcepSessNumReqRcvdErrorSent 0, pcePcepSessNumReqRcvdCancelRcvd 0, pcePcepSessNumRepRcvdUnknown 0, pcePcepSessNumReqRcvdUnknown 0 } -- no session to PCE3 Acknowledgements The authors would like to thank Santanu Mazumder, Meral Shirazipour, and Adrian Farrel for their valuable input. Contributors Dhruv Dhody Huawei Technologies Leela Palace Bangalore, Karnataka 560008 India EMail: dhruv.ietf@gmail.com Authors' Addresses Agrahara Kiran Koushik Brocade Communications, Inc. EMail: kkoushik@brocade.com Emile Stephan Orange 2 Avenue Pierre Marzin Lannion F-22307 France EMail: emile.stephan@orange.com Quintin Zhao Huawei Technology 125 Nagog Technology Park Acton, MA 01719 United States EMail: qzhao@huawei.com Daniel King Old Dog Consulting EMail: daniel@olddog.co.uk Jonathan Hardwick Metaswitch 100 Church Street Enfield EN2 6BQ United Kingdom EMail: jonathan.hardwick@metaswitch.com