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This memo defines a portion of the Management Information Base (MIB) for use with network management protocols. In particular it defines objects for managing the Border Gateway Protocol, Version 4.
This Internet-Draft is submitted to IETF in full conformance with the provisions of BCP 78 and BCP 79.
Internet-Drafts are working documents of the Internet Engineering Task Force (IETF), its areas, and its working groups. Note that other groups may also distribute working documents as Internet-Drafts.
Internet-Drafts are draft documents valid for a maximum of six months and may be updated, replaced, or obsoleted by other documents at any time. It is inappropriate to use Internet-Drafts as reference material or to cite them other than as “work in progress.”
The list of current Internet-Drafts can be accessed at http://www.ietf.org/ietf/1id-abstracts.txt.
The list of Internet-Draft Shadow Directories can be accessed at http://www.ietf.org/shadow.html.
This Internet-Draft will expire on August 6, 2010.
Copyright (c) 2010 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 BSD License.
1.
Introduction
2.
The Internet-Standard Management Framework
3.
Conventions
4.
Overview
5.
Structure of the MIB Module
5.1.
Notifications
5.2.
Tables
6.
Relationship to Other MIB Modules
6.1.
Relationship to the TCP-MIB
6.2.
MIB modules required for IMPORTS
7.
Definitions
8.
Security Considerations
9.
IANA Considerations
10.
Contributors
11.
Acknowledgements
12.
References
12.1.
Normative References
12.2.
Informative References
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This memo defines a portion of the Management Information Base (MIB) for use with network management protocols. In particular it defines objects for managing the Border Gateway Protocol, Version 4 [RFC4271] (Rekhter, Y., Li, T., and S. Hares, “A Border Gateway Protocol 4 (BGP-4),” January 2006.).
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For a detailed overview of the documents that describe the current Internet-Standard Management Framework, please refer to section 7 of RFC 3410 [RFC3410] (Case, J., Mundy, R., Partain, D., and B. Stewart, “Introduction and Applicability Statements for Internet-Standard Management Framework,” December 2002.).
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] (McCloghrie, K., Ed., Perkins, D., Ed., and J. Schoenwaelder, Ed., “Structure of Management Information Version 2 (SMIv2),” April 1999.), STD 58, RFC 2579 [RFC2579] (McCloghrie, K., Ed., Perkins, D., Ed., and J. Schoenwaelder, Ed., “Textual Conventions for SMIv2,” April 1999.) and STD 58, RFC 2580 [RFC2580] (McCloghrie, K., Perkins, D., and J. Schoenwaelder, “Conformance Statements for SMIv2,” April 1999.).
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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 RFC 2119 [RFC2119] (Bradner, S., “Key words for use in RFCs to Indicate Requirement Levels,” March 1997.).
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As part of the IETF standardization effort for the BGP-4 protocol, [RFC4273] (Haas, J. and S. Hares, “Definitions of Managed Objects for BGP-4,” January 2006.) was written to address open issues in the previous version of the BGP-4 MIB, [RFC1657] (Willis, S., Burruss, J., and J. Chu, “Definitions of Managed Objects for the Fourth Version of the Border Gateway Protocol (BGP-4) using SMIv2,” July 1994.). However, that RFC was primarily intended to address the base BGP-4 protocol as documented in [RFC4271] (Rekhter, Y., Li, T., and S. Hares, “A Border Gateway Protocol 4 (BGP-4),” January 2006.).
The BGP-4 protocol has greatly increased in scope over the years from its original definition. Scaling mechanisms such as Route Reflection (Bates, T., Chen, E., and R. Chandra, “BGP Route Reflection: An Alternative to Full Mesh Internal BGP (IBGP),” April 2006.) [RFC4456] and Confederations (Traina, P., McPherson, D., and J. Scudder, “Autonomous System Confederations for BGP,” August 2007.) [RFC5065] have been introduced. Multi-protocol extensions (Bates, T., Chandra, R., Katz, D., and Y. Rekhter, “Multiprotocol Extensions for BGP-4,” January 2007.) [RFC4760] were introduced which allowed advertisement of reachability such as IPv6 (Marques, P. and F. Dupont, “Use of BGP-4 Multiprotocol Extensions for IPv6 Inter-Domain Routing,” March 1999.) [RFC2545], MPLS Labeled routes (Rekhter, Y. and E. Rosen, “Carrying Label Information in BGP-4,” May 2001.) [RFC3107], etc.
This MIB addresses several of the deficiencies of the previous BGP-4 MIB. In particular:
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The bgp4V2PeerLocalAddrType/bgp4V2PeerLocalAddr/bgp4V2PeerLocalPort and bgp4V2PeerRemoteAddrType/bgp4V2PeerRemoteAddr/bgp4V2PeerRemotePort objects may provide a suitable index for monitoring the BGP peering session's TCP session via the TCP-MIB (Raghunarayan, R., “Management Information Base for the Transmission Control Protocol (TCP),” March 2005.) [RFC4022].
Note that conducting BGP peering sessions over transport protocols other than TCP over IP are out of scope of the current BGP specifications.
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The following MIB module IMPORTS objects from BGP4V2-TC-MIB [I-D.draft-ietf-idr-bgp4-mibv2-tc], SNMPv2-SMI [RFC2578] (McCloghrie, K., Ed., Perkins, D., Ed., and J. Schoenwaelder, Ed., “Structure of Management Information Version 2 (SMIv2),” April 1999.), SNMPv2-TC [RFC2579] (McCloghrie, K., Ed., Perkins, D., Ed., and J. Schoenwaelder, Ed., “Textual Conventions for SMIv2,” April 1999.), SNMPv2-CONF [RFC2580] (McCloghrie, K., Perkins, D., and J. Schoenwaelder, “Conformance Statements for SMIv2,” April 1999.), INET-ADDRESS-MIB [RFC4001] (Daniele, M., Haberman, B., Routhier, S., and J. Schoenwaelder, “Textual Conventions for Internet Network Addresses,” February 2005.) and SNMP-FRAMEWORK-MIB [RFC3411] (Harrington, D., Presuhn, R., and B. Wijnen, “An Architecture for Describing Simple Network Management Protocol (SNMP) Management Frameworks,” December 2002.).
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BGP4V2-MIB DEFINITIONS ::= BEGIN
IMPORTS
MODULE-IDENTITY, OBJECT-TYPE, NOTIFICATION-TYPE,
mib-2, Counter32, Gauge32, Unsigned32
FROM SNMPv2-SMI
InetAddressType, InetAddress, InetPortNumber,
InetAutonomousSystemNumber, InetAddressPrefixLength
FROM INET-ADDRESS-MIB
TruthValue, RowPointer, TimeStamp
FROM SNMPv2-TC
MODULE-COMPLIANCE, OBJECT-GROUP, NOTIFICATION-GROUP
FROM SNMPv2-CONF
SnmpAdminString
FROM SNMP-FRAMEWORK-MIB
Bgp4V2IdentifierTC, Bgp4V2AddressFamilyIdentifierTC,
Bgp4V2SubsequentAddressFamilyIdentifierTC
FROM BGP4V2-TC-MIB;
bgp4V2 MODULE-IDENTITY
LAST-UPDATED "201002010000Z"
ORGANIZATION "IETF IDR Working Group"
CONTACT-INFO "E-mail: idr@ietf.org"
DESCRIPTION
"The MIB module for the BGP-4 protocol.
Copyright (C) The IETF Trust (2010). This
version of this MIB module is part of RFC XXX;
see the RFC itself for full legal notices."
-- RFC Editor - replace XXX with RFC number
REVISION "201002010000Z"
DESCRIPTION
"This MIB updates and replaces the BGP MIB defined in
RFC 4273."
::= { mib-2 XXX }
-- Top level components of this MIB module
-- Notifications
bgp4V2Notifications OBJECT IDENTIFIER ::= { bgp4V2 0 }
-- Objects
bgp4V2Objects OBJECT IDENTIFIER ::= { bgp4V2 1 }
-- Conformance
bgp4V2Conformance OBJECT IDENTIFIER ::= { bgp4V2 2 }
--
-- Per-instance BGP discontinuities
--
bgp4V2DiscontinuityTable OBJECT-TYPE
SYNTAX SEQUENCE OF Bgp4V2DiscontinuityEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Table of BGP-4 discontinuities. Discontinuities that have
external visibility occur on a per-BGP instance basis.
Transitions by a given BGP peer will result in a consistent
BGP view within that instance and thus do not represent a
discontinuity from a protocol standpoint."
::= { bgp4V2Objects 1 }
bgp4V2DiscontinuityEntry OBJECT-TYPE
SYNTAX Bgp4V2DiscontinuityEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Entry repsenting information about a discontinuity event
for a given BGP instance."
INDEX {
bgp4V2PeerInstance
}
::= { bgp4V2DiscontinuityTable 1 }
Bgp4V2DiscontinuityEntry ::= SEQUENCE {
bgp4V2DiscontinuityTime
TimeStamp
}
bgp4V2DiscontinuityTime OBJECT-TYPE
SYNTAX TimeStamp
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The value of sysUpTime at the most recent occasion at which
this BGP management instance has suffered a discontinuity."
::= { bgp4V2DiscontinuityEntry 1 }
--
-- Per-peer session management information.
--
bgp4V2PeerTable OBJECT-TYPE
SYNTAX SEQUENCE OF Bgp4V2PeerEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"BGP peer table. This table contains, one entry per BGP
peer, information about the connections with BGP peers."
::= { bgp4V2Objects 2 }
bgp4V2PeerEntry OBJECT-TYPE
SYNTAX Bgp4V2PeerEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Entry containing information about the connection with
a remote BGP peer."
INDEX {
bgp4V2PeerInstance,
bgp4V2PeerRemoteAddrType,
bgp4V2PeerRemoteAddr
}
::= { bgp4V2PeerTable 1 }
Bgp4V2PeerEntry ::= SEQUENCE {
-- INDEX information
bgp4V2PeerInstance
Unsigned32,
bgp4V2PeerLocalAddrType
InetAddressType,
bgp4V2PeerLocalAddr
InetAddress,
bgp4V2PeerRemoteAddrType
InetAddressType,
bgp4V2PeerRemoteAddr
InetAddress,
-- Local
bgp4V2PeerLocalPort
InetPortNumber,
bgp4V2PeerLocalAs
InetAutonomousSystemNumber,
bgp4V2PeerLocalIdentifier
Bgp4V2IdentifierTC,
-- Remote
bgp4V2PeerRemotePort
InetPortNumber,
bgp4V2PeerRemoteAs
InetAutonomousSystemNumber,
bgp4V2PeerRemoteIdentifier
Bgp4V2IdentifierTC,
-- Session status
bgp4V2PeerAdminStatus
INTEGER,
bgp4V2PeerState
INTEGER,
bgp4V2PeerDescription
SnmpAdminString
}
bgp4V2PeerInstance OBJECT-TYPE
SYNTAX Unsigned32 (1..4294967295)
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The routing instance index.
Some BGP implementations permit the creation of
multiple instances of a BGP routing process. An
example includes routers running BGP/MPLS IP Virtual
Private Networks.
Implementations that do not support multiple
routing instances should return 1 for this object."
::= { bgp4V2PeerEntry 1 }
bgp4V2PeerLocalAddrType OBJECT-TYPE
SYNTAX InetAddressType
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The address family of the local end of the peering
session."
::= { bgp4V2PeerEntry 2 }
bgp4V2PeerLocalAddr OBJECT-TYPE
SYNTAX InetAddress
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The local IP address of this entry's BGP connection."
::= { bgp4V2PeerEntry 3 }
bgp4V2PeerRemoteAddrType OBJECT-TYPE
SYNTAX InetAddressType
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The address family of the remote end of the peering
session."
::= { bgp4V2PeerEntry 4 }
bgp4V2PeerRemoteAddr OBJECT-TYPE
SYNTAX InetAddress
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The remote IP address of this entry's BGP peer."
::= { bgp4V2PeerEntry 5 }
bgp4V2PeerLocalPort OBJECT-TYPE
SYNTAX InetPortNumber
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The local port for the TCP connection between the BGP
peers."
::= { bgp4V2PeerEntry 6 }
bgp4V2PeerLocalAs OBJECT-TYPE
SYNTAX InetAutonomousSystemNumber
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Some implementations of BGP can represent themselves
as multiple ASes. This is the AS that this peering
session is representing itself as to the remote peer."
::= { bgp4V2PeerEntry 7 }
bgp4V2PeerLocalIdentifier OBJECT-TYPE
SYNTAX Bgp4V2IdentifierTC
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The BGP Identifier of the local system for this peering
session. It is REQUIRED that all bgp4V2PeerLocalIdentifier
values for the same bgp4V2PeerInstance be identical."
REFERENCE
"RFC 4271, Section 4.2, 'BGP Identifier'."
::= { bgp4V2PeerEntry 8 }
bgp4V2PeerRemotePort OBJECT-TYPE
SYNTAX InetPortNumber
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The remote port for the TCP connection between the BGP
peers.
Note that the objects bgp4V2PeerLocalAddr,
bgp4V2PeerLocalPort, bgp4V2PeerRemoteAddr and
bgp4V2PeerRemotePort provide the appropriate reference to
the standard MIB TCP connection table, or even the ipv6
TCP MIB as in RFC 4022."
REFERENCE
"RFC 2012 - SNMPv2 Management Information Base for the
Transmission Control Protocol using SMIv2.
RFC 4022 - IP Version 6 Management Information Base
for the Transmission Control Protocol."
::= { bgp4V2PeerEntry 9 }
bgp4V2PeerRemoteAs OBJECT-TYPE
SYNTAX InetAutonomousSystemNumber
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The remote autonomous system number received in the BGP
OPEN message."
REFERENCE
"RFC 4271, Section 4.2."
::= { bgp4V2PeerEntry 10 }
bgp4V2PeerRemoteIdentifier OBJECT-TYPE
SYNTAX Bgp4V2IdentifierTC
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The BGP Identifier of this entry's remote BGP peer.
This entry should be 0.0.0.0 unless the
bgp4V2PeerState is in the openconfirm or the
established state."
REFERENCE
"RFC 4271, Section 4.2, 'BGP Identifier'."
::= { bgp4V2PeerEntry 11 }
bgp4V2PeerAdminStatus OBJECT-TYPE
SYNTAX INTEGER {
halted(1),
running(2)
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Whether or not the BGP FSM for this remote peer is
halted or running. The BGP FSM for a remote peer is
halted after processing a Stop event. Likewise, it is
in the running state after a Start event.
The bgp4V2PeerState will generally be in the idle state
when the FSM is halted, although some extensions such
as Graceful Restart will leave the peer in the Idle
state but with the FSM running."
REFERENCE
"RFC 4271, Section 8.1.2."
::= { bgp4V2PeerEntry 12 }
bgp4V2PeerState OBJECT-TYPE
SYNTAX INTEGER {
idle(1),
connect(2),
active(3),
opensent(4),
openconfirm(5),
established(6)
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The BGP peer connection state."
REFERENCE
"RFC 4271, Section 8.2.2."
::= { bgp4V2PeerEntry 13 }
bgp4V2PeerDescription OBJECT-TYPE
SYNTAX SnmpAdminString
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"A user configured description identifying this peer. When
this object is not the empty string, this object SHOULD
contain a description that is unique within a given BGP
instance for this peer."
::= { bgp4V2PeerEntry 14 }
--
-- Per-peer error management information.
--
bgp4V2PeerErrorsTable OBJECT-TYPE
SYNTAX SEQUENCE OF Bgp4V2PeerErrorsEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"On a per-peer basis, this table reflects the last
protocol-defined error encountered and reported on
the peer session."
::= { bgp4V2Objects 3 }
bgp4V2PeerErrorsEntry OBJECT-TYPE
SYNTAX Bgp4V2PeerErrorsEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Each entry contains information about errors sent
and received for a particular BGP peer."
AUGMENTS {
bgp4V2PeerEntry
}
::= { bgp4V2PeerErrorsTable 1 }
Bgp4V2PeerErrorsEntry ::= SEQUENCE {
bgp4V2PeerLastErrorCodeReceived
Unsigned32,
bgp4V2PeerLastErrorSubCodeReceived
Unsigned32,
bgp4V2PeerLastErrorReceivedTime
TimeStamp,
bgp4V2PeerLastErrorReceivedText
SnmpAdminString,
bgp4V2PeerLastErrorReceivedData
OCTET STRING,
bgp4V2PeerLastErrorCodeSent
Unsigned32,
bgp4V2PeerLastErrorSubCodeSent
Unsigned32,
bgp4V2PeerLastErrorSentTime
TimeStamp,
bgp4V2PeerLastErrorSentText
SnmpAdminString,
bgp4V2PeerLastErrorSentData
OCTET STRING
}
bgp4V2PeerLastErrorCodeReceived OBJECT-TYPE
SYNTAX Unsigned32 (0..255)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The last error code received from this peer via
NOTIFICATION message on this connection. If no error has
occurred, this field is zero."
REFERENCE
"RFC 4271, Section 4.5.
RFC 4486 optionally supported.
RFC 3362, Section 5 optionally supported."
::= { bgp4V2PeerErrorsEntry 1 }
bgp4V2PeerLastErrorSubCodeReceived OBJECT-TYPE
SYNTAX Unsigned32 (0..255)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The last subcode received from this peer via NOTIFICATION
message on this connection. If no error has occurred, this
field is zero."
REFERENCE
"RFC 4271, Section 4.5.
RFC 4486 optionally supported.
RFC 3362, Section 5 optionally supported."
::= { bgp4V2PeerErrorsEntry 2 }
bgp4V2PeerLastErrorReceivedTime OBJECT-TYPE
SYNTAX TimeStamp
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The timestamp that the last NOTIFICATION was received from
this peer."
REFERENCE
"RFC 4271, Section 4.5."
::= { bgp4V2PeerErrorsEntry 3 }
bgp4V2PeerLastErrorReceivedText OBJECT-TYPE
SYNTAX SnmpAdminString
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object contains an implementation specific
explanation of the error that was reported."
::= { bgp4V2PeerErrorsEntry 4 }
bgp4V2PeerLastErrorReceivedData OBJECT-TYPE
SYNTAX OCTET STRING (SIZE(0..4075))
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The last error code's data seen by this peer.
Per RFC 2578, some implementations may have limitations
dealing with OCTET STRINGS larger than 255. Thus, this
data may be truncated."
REFERENCE
"RFC 4271, Section 4.5,
RFC 2578, Section 7.1.2,
RFC 4486 optionally supported.
RFC 3362, Section 5 optionally supported."
::= { bgp4V2PeerErrorsEntry 5 }
bgp4V2PeerLastErrorCodeSent OBJECT-TYPE
SYNTAX Unsigned32 (0..255)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The last error code sent to this peer via NOTIFICATION
message on this connection. If no error has occurred, this
field is zero."
REFERENCE
"RFC 4271, Section 4.5.
RFC 4486 optionally supported.
RFC 3362, Section 5 optionally supported."
::= { bgp4V2PeerErrorsEntry 6 }
bgp4V2PeerLastErrorSubCodeSent OBJECT-TYPE
SYNTAX Unsigned32 (0..255)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The last subcode sent to this peer via NOTIFICATION
message on this connection. If no error has occurred, this
field is zero."
REFERENCE
"RFC 4271, Section 4.5.
RFC 4486 optionally supported.
RFC 3362, Section 5 optionally supported."
::= { bgp4V2PeerErrorsEntry 7 }
bgp4V2PeerLastErrorSentTime OBJECT-TYPE
SYNTAX TimeStamp
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The timestamp that the last NOTIFICATION was sent to
this peer."
REFERENCE
"RFC 4271, Section 4.5."
::= { bgp4V2PeerErrorsEntry 8 }
bgp4V2PeerLastErrorSentText OBJECT-TYPE
SYNTAX SnmpAdminString
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object contains an implementation specific
explanation of the error that is being reported."
::= { bgp4V2PeerErrorsEntry 9 }
bgp4V2PeerLastErrorSentData OBJECT-TYPE
SYNTAX OCTET STRING (SIZE(0..4075))
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The last error code's data sent to this peer.
Per RFC 2578, some implementations may have limitations
dealing with OCTET STRINGS larger than 255. Thus, this
data may be truncated."
REFERENCE
"RFC 4271, Section 4.5,
RFC 2578, Section 7.1.2
RFC 4486 optionally supported.
RFC 3362, Section 5 optionally supported."
::= { bgp4V2PeerErrorsEntry 10 }
--
-- Per-peer Event Times
--
bgp4V2PeerEventTimesTable OBJECT-TYPE
SYNTAX SEQUENCE OF Bgp4V2PeerEventTimesEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A table reporting the per-peering session amount
of time elapsed and update events since the peering
session advanced into the established state."
::= { bgp4V2Objects 4 }
bgp4V2PeerEventTimesEntry OBJECT-TYPE
SYNTAX Bgp4V2PeerEventTimesEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Each row contains a set of statistics about time
spent and events encountered in the peer session
established state."
AUGMENTS {
bgp4V2PeerEntry
}
::= { bgp4V2PeerEventTimesTable 1 }
Bgp4V2PeerEventTimesEntry ::= SEQUENCE {
bgp4V2PeerFsmEstablishedTime
Gauge32,
bgp4V2PeerInUpdatesElapsedTime
Gauge32
}
bgp4V2PeerFsmEstablishedTime OBJECT-TYPE
SYNTAX Gauge32
UNITS "seconds"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This timer indicates how long (in seconds) this peer
has been in the established state or how long since this
peer was last in the established state. It is set to
zero when a new peer is configured or when the router is
booted. If the peer has never reached the established
state, the value remains zero."
REFERENCE
"RFC 4271, Section 8."
::= { bgp4V2PeerEventTimesEntry 1 }
bgp4V2PeerInUpdatesElapsedTime OBJECT-TYPE
SYNTAX Gauge32
UNITS "seconds"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Elapsed time (in seconds) since the last BGP UPDATE
message was received from the peer. Each time
bgpPeerInUpdates is incremented, the value of this
object is set to zero (0)."
REFERENCE
"RFC 4271, Section 4.3.
RFC 4271, Section 8.2.2, Established state."
::= { bgp4V2PeerEventTimesEntry 2 }
--
-- Per-Peer Configured Timers
--
bgp4V2PeerConfiguredTimersTable OBJECT-TYPE
SYNTAX SEQUENCE OF Bgp4V2PeerConfiguredTimersEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Per peer management data on BGP session timers."
::= { bgp4V2Objects 5 }
bgp4V2PeerConfiguredTimersEntry OBJECT-TYPE
SYNTAX Bgp4V2PeerConfiguredTimersEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Each entry corresponds to the current state of
BGP timers on a given peering session."
AUGMENTS {
bgp4V2PeerEntry
}
::= { bgp4V2PeerConfiguredTimersTable 1 }
Bgp4V2PeerConfiguredTimersEntry ::= SEQUENCE {
bgp4V2PeerConnectRetryInterval
Unsigned32,
bgp4V2PeerHoldTimeConfigured
Unsigned32,
bgp4V2PeerKeepAliveConfigured
Unsigned32,
bgp4V2PeerMinASOrigInterval
Unsigned32,
bgp4V2PeerMinRouteAdverInterval
Unsigned32
}
bgp4V2PeerConnectRetryInterval OBJECT-TYPE
SYNTAX Unsigned32 (1..65535)
UNITS "seconds"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Time interval (in seconds) for the ConnectRetry timer.
The suggested value for this timer is 120 seconds."
REFERENCE
"RFC 4271, Section 8.2.2. This is the value used
to initialize the 'ConnectRetryTimer'."
::= { bgp4V2PeerConfiguredTimersEntry 1 }
bgp4V2PeerHoldTimeConfigured OBJECT-TYPE
SYNTAX Unsigned32 ( 0 | 3..65535 )
UNITS "seconds"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Time interval (in seconds) for the Hold Timer
established with the peer. The value of this object is
calculated by this BGP speaker, using the smaller of the
values in bgpPeerHoldTimeConfigured and the Hold Time
received in the OPEN message.
This value must be at least three seconds if it is not
zero (0).
If the Hold Timer has not been established with the
peer this object MUST have a value of zero (0).
If the bgpPeerHoldTimeConfigured object has a value of
(0), then this object MUST have a value of (0)."
REFERENCE
"RFC 4271, Section 4.2."
::= { bgp4V2PeerConfiguredTimersEntry 2 }
bgp4V2PeerKeepAliveConfigured OBJECT-TYPE
SYNTAX Unsigned32 ( 0 | 1..21845 )
UNITS "seconds"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Time interval (in seconds) for the KeepAlive timer
configured for this BGP speaker with this peer. The
value of this object will only determine the KEEPALIVE
messages' frequency relative to the value specified in
bgpPeerHoldTimeConfigured; the actual time interval for
the KEEPALIVE messages is indicated by bgpPeerKeepAlive.
A reasonable maximum value for this timer would be one
third of that of bgpPeerHoldTimeConfigured.
If the value of this object is zero (0), no periodic
KEEPALIVE messages are sent to the peer after the BGP
connection has been established. The suggested value
for this timer is 30 seconds."
REFERENCE
"RFC 4271, Section 4.4.
RFC 4271, Section 10."
::= { bgp4V2PeerConfiguredTimersEntry 3 }
bgp4V2PeerMinASOrigInterval OBJECT-TYPE
SYNTAX Unsigned32 (0..65535)
UNITS "seconds"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Time interval (in seconds) for the
MinASOriginationInterval timer.
The suggested value for this timer is 15 seconds."
REFERENCE
"RFC 4271, Section 9.2.1.2.
RFC 4271, Section 10."
::= { bgp4V2PeerConfiguredTimersEntry 4 }
bgp4V2PeerMinRouteAdverInterval OBJECT-TYPE
SYNTAX Unsigned32 (0..65535)
UNITS "seconds"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Time interval (in seconds) for the
MinRouteAdvertisementInterval timer.
The suggested value for this timer is 30 seconds for
EBGP connections and 5 seconds for IBGP connections."
REFERENCE
"RFC 4271, Section 9.2.1.1.
RFC 4271, Section 10."
::= { bgp4V2PeerConfiguredTimersEntry 5 }
--
-- Per-Peer Negotiated Timers
--
bgp4V2PeerNegotiatedTimersTable OBJECT-TYPE
SYNTAX SEQUENCE OF Bgp4V2PeerNegotiatedTimersEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Configured values of per-peer timers are seen
in the bgp4V2PeerConfiguredTimersTable.
Values in this table reflect the current
operational values, after negotiation from values
derived from initial configuration."
::= { bgp4V2Objects 6 }
bgp4V2PeerNegotiatedTimersEntry OBJECT-TYPE
SYNTAX Bgp4V2PeerNegotiatedTimersEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Each entry reflects a value of the currently
operational, negotiated timer as reflected in the
Bgp4V2PeerNegotiatedTimersEntry."
AUGMENTS {
bgp4V2PeerEntry
}
::= { bgp4V2PeerNegotiatedTimersTable 1 }
Bgp4V2PeerNegotiatedTimersEntry ::= SEQUENCE {
bgp4V2PeerHoldTime
Unsigned32,
bgp4V2PeerKeepAlive
Unsigned32
}
bgp4V2PeerHoldTime OBJECT-TYPE
SYNTAX Unsigned32 ( 0 | 3..65535 )
UNITS "seconds"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The value of this object is calculated by this BGP
Speaker as being;
zero (0) - if this was the value sent by the peer and
this value is permitted by this BGP Speaker. In this
case, no keepalive messages are sent and the Hold Timer
is not set.
At least three (3). This value is the smaller of
the value sent by this peer in the OPEN message and
bgp4V2PeerHoldTimeConfigured for this peer.
If the peer is not in the established state, the value
of this object is zero (0)."
REFERENCE
"RFC 4271, Section 4.2."
::= { bgp4V2PeerNegotiatedTimersEntry 1 }
bgp4V2PeerKeepAlive OBJECT-TYPE
SYNTAX Unsigned32 ( 0 | 1..21845 )
UNITS "seconds"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Time interval in seconds for the KeepAlive timer
established with the peer. The value of this object
is calculated by this BGP speaker such that, when
compared with bgp4V2PeerHoldTime, it has the same
proportion as what bgp4V2PeerKeepAliveConfigured has
when compared with bgp4V2PeerHoldTimeConfigured. If
the value of this object is zero (0), it indicates
that the KeepAlive timer has not been established
with the peer, or, the value of
bgp4V2PeerKeepAliveConfigured is zero (0).
If the peer is not in the established state, the value
of this object is zero (0)."
REFERENCE
"RFC 4271, Section 4.4."
::= { bgp4V2PeerNegotiatedTimersEntry 2 }
--
-- Per-peer counters
--
bgp4V2PeerCountersTable OBJECT-TYPE
SYNTAX SEQUENCE OF Bgp4V2PeerCountersEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The counters associated with a BGP Peer."
::= { bgp4V2Objects 7 }
bgp4V2PeerCountersEntry OBJECT-TYPE
SYNTAX Bgp4V2PeerCountersEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Each entry contains counters of message transmissions
and FSM transitions for a given BGP Peering session."
AUGMENTS {
bgp4V2PeerEntry
}
::= { bgp4V2PeerCountersTable 1 }
Bgp4V2PeerCountersEntry ::= SEQUENCE {
bgp4V2PeerInUpdates
Counter32,
bgp4V2PeerOutUpdates
Counter32,
bgp4V2PeerInTotalMessages
Counter32,
bgp4V2PeerOutTotalMessages
Counter32,
bgp4V2PeerFsmEstablishedTransitions
Counter32
}
bgp4V2PeerInUpdates OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of BGP UPDATE messages received on this
connection."
::= { bgp4V2PeerCountersEntry 1 }
bgp4V2PeerOutUpdates OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of BGP UPDATE messages transmitted on this
connection."
::= { bgp4V2PeerCountersEntry 2 }
bgp4V2PeerInTotalMessages OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total number of messages received from the remote
peer on this connection."
::= { bgp4V2PeerCountersEntry 3 }
bgp4V2PeerOutTotalMessages OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total number of messages transmitted to the remote
peer on this connection."
::= { bgp4V2PeerCountersEntry 4 }
bgp4V2PeerFsmEstablishedTransitions OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total number of times the BGP FSM transitioned into
the established state for this peer."
::= { bgp4V2PeerCountersEntry 5 }
--
-- Per-Peer Prefix Gauges
--
bgp4V2PrefixGaugesTable OBJECT-TYPE
SYNTAX SEQUENCE OF Bgp4V2PrefixCountersEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Additional per-peer, per AFI-SAFI counters for
prefixes"
::= { bgp4V2Objects 8 }
bgp4V2PrefixGaugesEntry OBJECT-TYPE
SYNTAX Bgp4V2PrefixCountersEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Entry containing information about a bgp-peers prefix
counters."
INDEX {
bgp4V2PeerInstance,
bgp4V2PeerRemoteAddrType,
bgp4V2PeerRemoteAddr,
bgp4V2PrefixGaugesAfi,
bgp4V2PrefixGaugesSafi
}
::= { bgp4V2PrefixGaugesTable 1 }
Bgp4V2PrefixCountersEntry ::= SEQUENCE {
bgp4V2PrefixGaugesAfi
Bgp4V2AddressFamilyIdentifierTC,
bgp4V2PrefixGaugesSafi
Bgp4V2SubsequentAddressFamilyIdentifierTC,
bgp4V2PrefixInPrefixes
Gauge32,
bgp4V2PrefixInPrefixesAccepted
Gauge32,
bgp4V2PrefixOutPrefixes
Gauge32
}
bgp4V2PrefixGaugesAfi OBJECT-TYPE
SYNTAX Bgp4V2AddressFamilyIdentifierTC
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The AFI index of the per-peer, per prefix counters"
::= { bgp4V2PrefixGaugesEntry 1 }
bgp4V2PrefixGaugesSafi OBJECT-TYPE
SYNTAX Bgp4V2SubsequentAddressFamilyIdentifierTC
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The SAFI index of the per-peer, per prefix counters"
::= { bgp4V2PrefixGaugesEntry 2 }
bgp4V2PrefixInPrefixes OBJECT-TYPE
SYNTAX Gauge32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of prefixes received from a peer and are
stored in the Adj-Ribs-In for that peer.
Note that this number does not reflect prefixes that
have been discarded due to policy."
REFERENCE
"RFC 4271, Sections 3.2 and 9."
::= { bgp4V2PrefixGaugesEntry 3 }
bgp4V2PrefixInPrefixesAccepted OBJECT-TYPE
SYNTAX Gauge32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of prefixes for a peer that are installed
in the Adj-Ribs-In and are eligible to become active
in the Loc-Rib."
REFERENCE
"RFC 4271, Sections 3.2 and 9."
::= { bgp4V2PrefixGaugesEntry 4 }
bgp4V2PrefixOutPrefixes OBJECT-TYPE
SYNTAX Gauge32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of prefixes for a peer that are installed
in that peer's Adj-Ribs-Out."
REFERENCE
"RFC 4271, Sections 3.2 and 9."
::= { bgp4V2PrefixGaugesEntry 5 }
--
-- BGP NLRI
--
bgp4V2NlriTable OBJECT-TYPE
SYNTAX SEQUENCE OF Bgp4V2NlriEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The BGP-4 Received Path Attribute Table contains
information about paths to destination networks
received from all BGP4 peers. Collectively, this
represents the Adj-Ribs-In. The route where
bgp4V2NlriBest is true represents, for this NLRI,
the route that is installed in the LocRib from the
Adj-Ribs-In."
REFERENCE
"RFC 4271, Sections 3.2 and 9."
::= { bgp4V2Objects 9 }
bgp4V2NlriEntry OBJECT-TYPE
SYNTAX Bgp4V2NlriEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Information about a path to a network."
INDEX {
bgp4V2PeerInstance,
bgp4V2NlriAfi,
bgp4V2NlriSafi,
bgp4V2NlriPrefixType,
bgp4V2NlriPrefix,
bgp4V2NlriPrefixLen,
bgp4V2PeerRemoteAddrType,
bgp4V2PeerRemoteAddr,
bgp4V2NlriIndex
}
::= { bgp4V2NlriTable 1 }
Bgp4V2NlriEntry ::= SEQUENCE {
bgp4V2NlriIndex
Unsigned32,
bgp4V2NlriAfi
Bgp4V2AddressFamilyIdentifierTC,
bgp4V2NlriSafi
Bgp4V2SubsequentAddressFamilyIdentifierTC,
bgp4V2NlriPrefixType
InetAddressType,
bgp4V2NlriPrefix
InetAddress,
bgp4V2NlriPrefixLen
InetAddressPrefixLength,
bgp4V2NlriBest
TruthValue,
bgp4V2NlriCalcLocalPref
Unsigned32,
bgp4V2NlriOrigin
INTEGER,
bgp4V2NlriNextHopAddrType
InetAddressType,
bgp4V2NlriNextHopAddr
InetAddress,
bgp4V2NlriLinkLocalNextHopAddrType
InetAddressType,
bgp4V2NlriLinkLocalNextHopAddr
InetAddress,
bgp4V2NlriLocalPrefPresent
TruthValue,
bgp4V2NlriLocalPref
Unsigned32,
bgp4V2NlriMedPresent
TruthValue,
bgp4V2NlriMed
Unsigned32,
bgp4V2NlriAtomicAggregate
INTEGER,
bgp4V2NlriAggregatorPresent
TruthValue,
bgp4V2NlriAggregatorAS
InetAutonomousSystemNumber,
bgp4V2NlriAggregatorAddr
Bgp4V2IdentifierTC,
bgp4V2NlriAsPathCalcLength
Unsigned32,
bgp4V2NlriAsPathString
SnmpAdminString,
bgp4V2NlriAsPath
OCTET STRING,
bgp4V2NlriPathAttrUnknown
OCTET STRING
}
bgp4V2NlriIndex OBJECT-TYPE
SYNTAX Unsigned32
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This index allows for multiple instances of a base
prefix for a certain AFI-SAFI from a given peer.
This is currently useful for two things:
1. Allowing for a peer in future implementations to
send more than a single route instance.
2. Allow for extensions which extend the NLRI field
to send the same prefix while utilizing other
extension specific information. An example of
this is RFC 3107 - Carrying MPLS labels in BGP."
REFERENCE
"RFC 3107 - Carrying Label Information in BGP-4."
::= { bgp4V2NlriEntry 1 }
bgp4V2NlriAfi OBJECT-TYPE
SYNTAX Bgp4V2AddressFamilyIdentifierTC
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The address family of the prefix for this NLRI.
Note that the AFI is not necessarily equivalent to
the an InetAddressType."
REFERENCE
"RFC 4760 - Multiprotocol Extensions for BGP-4"
::= { bgp4V2NlriEntry 2 }
bgp4V2NlriSafi OBJECT-TYPE
SYNTAX Bgp4V2SubsequentAddressFamilyIdentifierTC
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The subsequent address family of the prefix for
this NLRI"
REFERENCE
"RFC 4760 - Multiprotocol Extensions for BGP-4"
::= { bgp4V2NlriEntry 3 }
bgp4V2NlriPrefixType OBJECT-TYPE
SYNTAX InetAddressType
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The type of the IP address prefix in the
Network Layer Reachability Information field.
The value of this object is derived from the
appropriate value from the bgp4V2NlriAfi field.
Where an appropriate InetAddressType is not
available, the value of the object must be
unknown(0)."
::= { bgp4V2NlriEntry 4 }
bgp4V2NlriPrefix OBJECT-TYPE
SYNTAX InetAddress
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An IP address prefix in the Network Layer
Reachability Information field. This object
is an IP address containing the prefix with
length specified by bgp4V2NlriPrefixLen.
Any bits beyond the length specified by
bgp4V2NlriPrefixLen are zeroed."
REFERENCE
"RFC 4271, Section 4.3."
::= { bgp4V2NlriEntry 5 }
bgp4V2NlriPrefixLen OBJECT-TYPE
SYNTAX InetAddressPrefixLength
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Length in bits of the address prefix in
the Network Layer Reachability Information field."
::= { bgp4V2NlriEntry 6 }
bgp4V2NlriBest OBJECT-TYPE
SYNTAX TruthValue
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"An indication of whether or not this route
was chosen as the best BGP4 route for this
destination."
REFERENCE
"RFC 4271, Section 9.1.2."
::= { bgp4V2NlriEntry 7 }
bgp4V2NlriCalcLocalPref OBJECT-TYPE
SYNTAX Unsigned32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The degree of preference calculated by the
receiving BGP4 speaker for an advertised
route.
In the case where this prefix is ineligible, the
value of this object will be zero (0)."
REFERENCE
"RFC 4271, Section 9.1.1"
::= { bgp4V2NlriEntry 8 }
bgp4V2NlriOrigin OBJECT-TYPE
SYNTAX INTEGER {
igp(1),-- networks are interior
egp(2),-- networks learned via the EGP protocol
incomplete(3) -- networks that
-- are learned by some other
-- means
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The ultimate origin of the path information."
REFERENCE
"RFC 4271, Section 4.3.
RFC 4271, Section 5.1.1."
::= { bgp4V2NlriEntry 9 }
bgp4V2NlriNextHopAddrType OBJECT-TYPE
SYNTAX InetAddressType
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The address family of the address for
the border router that should be used
to access the destination network."
::= { bgp4V2NlriEntry 10 }
bgp4V2NlriNextHopAddr OBJECT-TYPE
SYNTAX InetAddress (SIZE(4..20))
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The address of the border router that
should be used to access the destination
network. This address is the nexthop
address received in the UPDATE packet associated with
this prefix.
Note that for RFC2545 style double nexthops,
this object will always contain the global scope
nexthop. bgpPathAttrLinkLocalNextHop will contain
the linklocal scope nexthop, if it is present.
In the case a mechanism is developed to use only a link
local nexthop, bgp4V2NlriNextHopAddr will contain the
link local nexthop."
REFERENCE
"RFC 4271, Section 4.3,
RFC 4271, Section 5.1.3,
RFC 2545, Section 3."
::= { bgp4V2NlriEntry 11 }
bgp4V2NlriLinkLocalNextHopAddrType OBJECT-TYPE
SYNTAX InetAddressType
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The address type for IPv6 link local addresses.
This is present only when receiving RFC 2545
style double nexthops.
This object is optionally present in BGP
implementations that do not support IPv6.
When no IPv6 link local nexthop is present, the value of
this object should be unknown(0)."
REFERENCE
"RFC 2545, Section 3."
::= { bgp4V2NlriEntry 12 }
bgp4V2NlriLinkLocalNextHopAddr OBJECT-TYPE
SYNTAX InetAddress
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This value contains an IPv6 link local address
and is present only when receiving RFC 2545 style
double nexthops.
This object is optionally present in BGP
implementations that do not support IPv6.
When no IPv6 link local nexthop is present, the length of
this object should be zero."
REFERENCE
"RFC 2545, Section 3."
::= { bgp4V2NlriEntry 13 }
bgp4V2NlriLocalPrefPresent OBJECT-TYPE
SYNTAX TruthValue
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This value is true when the LOCAL_PREF value was sent in
the UPDATE message."
::= { bgp4V2NlriEntry 14 }
bgp4V2NlriLocalPref OBJECT-TYPE
SYNTAX Unsigned32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The originating BGP4 speakers degree of preference for an
advertised route."
REFERENCE
"RFC 4271, Section 4.3.
RFC 4271, Section 5.1.5."
::= { bgp4V2NlriEntry 15 }
bgp4V2NlriMedPresent OBJECT-TYPE
SYNTAX TruthValue
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This value is true when the MED value was sent in
the UPDATE message."
::= { bgp4V2NlriEntry 16 }
bgp4V2NlriMed OBJECT-TYPE
SYNTAX Unsigned32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This metric is used to discriminate between multiple
exit points to an adjacent autonomous system. When the MED
value is absent but has a calculated default value, this
object will contain the calculated value."
REFERENCE
"RFC 4271, Section 4.3.
RFC 4271, Section 5.1.4."
::= { bgp4V2NlriEntry 17 }
bgp4V2NlriAtomicAggregate OBJECT-TYPE
SYNTAX TruthValue
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This value is true when the ATOMIC_AGGREGATE Path Attribute
is present and indicates that the NLRI MUST NOT be made
more specific."
REFERENCE
"RFC 4271, Sections 5.1.6 and 9.1.4."
::= { bgp4V2NlriEntry 18 }
bgp4V2NlriAggregatorPresent OBJECT-TYPE
SYNTAX TruthValue
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This value is true when the AGGREGATOR path attribute
was sent in the UPDATE message."
::= { bgp4V2NlriEntry 19 }
bgp4V2NlriAggregatorAS OBJECT-TYPE
SYNTAX InetAutonomousSystemNumber
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The AS number of the last BGP4 speaker that performed route
aggregation. When bgp4V2NlriAggregatorPresent is
false, the value of this object should be zero (0)."
REFERENCE
"RFC 4271, Section 5.1.7.
RFC 4271, Section 9.2.2.2."
::= { bgp4V2NlriEntry 20 }
bgp4V2NlriAggregatorAddr OBJECT-TYPE
SYNTAX Bgp4V2IdentifierTC
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The IP address of the last BGP4 speaker that performed
route aggregation. When bgp4V2NlriAggregatorPresent is
false, the value of this object should be 0.0.0.0"
REFERENCE
"RFC 4271, Section 5.1.7.
RFC 4271, Section 9.2.2.2."
::= { bgp4V2NlriEntry 21 }
bgp4V2NlriAsPathCalcLength OBJECT-TYPE
SYNTAX Unsigned32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This value represents the calculated length of the
AS Path according to the rules of the BGP
specification. This value is used in route selection."
REFERENCE
"RFC 4271, Section 9.1.2.2.a"
::= { bgp4V2NlriEntry 22 }
bgp4V2NlriAsPathString OBJECT-TYPE
SYNTAX SnmpAdminString
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This is a string depicting the autonomous system
path to this network which was received from the
peer which advertised it. The format of the string
is implementation-dependent, and should be designed
for operator readability.
Note that SnmpAdminString is only capable of representing a
maximum of 255 characters. This may lead to the string
being truncated in the presence of a large AS Path. It is
RECOMMENDED that when this object's contents will be
truncated that the final 3 octets be reserved for the
ellipses string, '...'. bgp4V2NlriAsPath may give access
to the full AS Path."
::= { bgp4V2NlriEntry 23 }
-- Maximum size of the following is derived as
-- 4096 max message size
-- - 16 BGP message marker bytes
-- - 2 BGP message size
-- - 1 BGP message type (UPDATE with unknown attr)
-- - 2 UPDATE routes length (even assuming no routes)
-- - 2 UPDATE path attributes length
-- - 1 path attribute flag octet
-- ---------
-- 4072 bytes maximum per-message attribute value data
bgp4V2NlriAsPath OBJECT-TYPE
SYNTAX OCTET STRING (SIZE(2..4072))
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"In order to provide a canonicalized form of the BGP-4
AS_PATH along with the human-readable
bgp4V2NlriAsPathString, which may be truncated, this object
contains the contents of the BGP-4 AS_PATH Path Attribute.
This object may be parsed using the rules defined for
Four-octet ASes as defined in RFC 4893. RFC 4271, Section
4.3, 'Path Attributes: b) AS_PATH' as amended by RFC 5065,
Section 3 defines the general format of the AS_PATH path
attribute and its code points.
In brief, the AS_PATH is composed of a sequence of AS
Segments. Each AS Segment is represented by a triple:
<path segment type, path segment length,
path segment value>.
The path segment type and path segment length fields are
one octet in length each.
The path segment type field may be one of:
1 - AS_SET (RFC 4721, Section 4.3)
2 - AS_SEQUENCE (RFC 4721, Section 4.3)
3 - AS_CONFED_SEQUENCE (RFC 3065, Section 5)
4 - AS_CONFED_SET (RFC 3065, Section 5)
The path segment length field contains the number of ASes
(not the number of octets) in the path segment value field.
The path segment value field contains one or more AS
numbers, each encoded as a 4-octet length field in network
byte order.
Note that since an SNMP agent may truncate this object to
less than its maximum theoretical length of 4072 octets
users of this object should be prepared to deal with a
truncated and thus malformed AS_PATH. It is RECOMMENDED
that when such truncation would occur on the boundary of an
encoded AS that the partial AS be discarded from this
object and the object's size be adjusted accordingly.
Further, it is also RECOMMENDED that when such truncation,
either alone or in conjuction with the truncation of a
partially encoded AS described previously, would yield an
empty path segment value field that the path segment type
and path segment length components of the truncated AS_PATH
also be discarded and the object's size be adjusted
accordingly."
REFERENCE
"RFC 4271, Section 4.3.
RFC 5065, Section 5.
RFC 4893."
::= { bgp4V2NlriEntry 24 }
bgp4V2NlriPathAttrUnknown OBJECT-TYPE
SYNTAX OCTET STRING (SIZE(0..4072))
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Path Attributes not understood by this implementation
SHOULD be be presented in this object. Those Path
Attributes use the type, length, value encoding documented
in RFC 4271, Section 4.3, 'Path Attributes'.
Note that since an SNMP agent may truncate this object to
less than its maximum theoretical length of 4072 octets
users of this object should be prepared to deal with a
truncated and thus malformed Path Attribute."
REFERENCE
"RFC 4271, Section 4.3."
::= { bgp4V2NlriEntry 25 }
--
-- Adj-Ribs-Out Table
--
bgp4V2AdjRibsOutTable OBJECT-TYPE
SYNTAX SEQUENCE OF Bgp4V2AdjRibsOutEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This table contains on a per-peer basis one or more
routes from the bgp4V2NlriTable that have been
placed in this peer's Adj-Ribs-Out."
REFERENCE
"RFC 4271, Section 3.2."
::= { bgp4V2Objects 10 }
bgp4V2AdjRibsOutEntry OBJECT-TYPE
SYNTAX Bgp4V2AdjRibsOutEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"List of BGP routes that have been placed into a
peer's Adj-Ribs-Out."
INDEX {
bgp4V2PeerInstance,
bgp4V2NlriAfi,
bgp4V2NlriSafi,
bgp4V2NlriPrefixType,
bgp4V2NlriPrefix,
bgp4V2NlriPrefixLen,
bgp4V2PeerRemoteAddrType,
bgp4V2PeerRemoteAddr,
bgp4V2AdjRibsOutIndex
}
::= { bgp4V2AdjRibsOutTable 1 }
Bgp4V2AdjRibsOutEntry ::= SEQUENCE {
bgp4V2AdjRibsOutIndex
Unsigned32,
bgp4V2AdjRibsOutRoute
RowPointer
}
bgp4V2AdjRibsOutIndex OBJECT-TYPE
SYNTAX Unsigned32
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Certain extensions to BGP permit multiple instance of
a per afi, per safi prefix to be advertised to a peer.
This object allows the enumeration of them."
::= { bgp4V2AdjRibsOutEntry 1 }
bgp4V2AdjRibsOutRoute OBJECT-TYPE
SYNTAX RowPointer
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object points to the route in the bgp4V2NlriTable
that corresponds to the entry in the peer's
Adj-Rib-Out. Outgoing route maps are not
reflected at this point as those are part of the
Update-Send process."
REFERENCE
"RFC 4271, Section 9.2."
::= { bgp4V2AdjRibsOutEntry 2 }
--
-- Notifications
--
bgp4V2EstablishedNotification NOTIFICATION-TYPE
OBJECTS {
bgp4V2PeerState,
bgp4V2PeerLocalPort,
bgp4V2PeerRemotePort
}
STATUS current
DESCRIPTION
"The BGP Established event is generated when
the BGP FSM enters the established state."
::= { bgp4V2Notifications 1 }
bgp4V2BackwardTransitionNotification NOTIFICATION-TYPE
OBJECTS {
bgp4V2PeerState,
bgp4V2PeerLocalPort,
bgp4V2PeerRemotePort,
bgp4V2PeerLastErrorCodeReceived,
bgp4V2PeerLastErrorSubCodeReceived,
bgp4V2PeerLastErrorReceivedText
}
STATUS current
DESCRIPTION
"The BGPBackwardTransition Event is generated
when the BGP FSM moves from a higher numbered
state to a lower numbered state.
Due to the nature of the BGP state machine, an
implementation MAY rate limit the generation of this event.
An implementation MAY also generate this notification ONLY
when the state machine moves out of the established state.
An implementation should document its specific behavior."
::= { bgp4V2Notifications 2 }
--
-- Conformance Information
--
bgp4V2Compliances OBJECT IDENTIFIER ::=
{ bgp4V2Conformance 1 }
bgp4V2Groups OBJECT IDENTIFIER ::=
{ bgp4V2Conformance 2 }
bgp4V2Compliance MODULE-COMPLIANCE
STATUS current
DESCRIPTION
"The compliance statement for entities which
implement the BGP4 mib."
MODULE -- this module
MANDATORY-GROUPS {
bgp4V2StdMIBTimersGroup,
bgp4V2StdMIBCountersGroup,
bgp4V2StdMIBErrorsGroup,
bgp4V2StdMIBPeerGroup,
bgp4V2StdMIBNlriGroup,
bgp4V2GlobalsGroup
}
GROUP bgp4V2StdMIBNotificationGroup
DESCRIPTION
"Implementation of BGP Notifications are completely
optional in this MIB."
OBJECT bgp4V2PeerLocalAddr
SYNTAX InetAddress (SIZE(4|16|20))
DESCRIPTION
"An implementation is required to support IPv4 peering
sessions. An implementation MAY support IPv6 peering
sessions. IPv6 link-local peering sessions MAY be
supported by this MIB."
OBJECT bgp4V2PeerRemoteAddr
SYNTAX InetAddress (SIZE(4|16|20))
DESCRIPTION
"An implementation is required to support IPv4 peering
sessions. An implementation MAY support IPv6 peering
sessions. IPv6 link-local peering sessions MAY be
supported by this MIB."
OBJECT bgp4V2NlriPrefix
SYNTAX InetAddress (SIZE(0..16))
DESCRIPTION
"An implementation is required to support IPv4 prefixes.
An implementation MAY support IPv6 prefixes."
OBJECT bgp4V2NlriLinkLocalNextHopAddrType
SYNTAX InetAddressType
DESCRIPTION
"This object is only present when RFC 2545 extensions for
IPv6 are supported by the implementation. When present,
this object shall only have a value of ipv6z or none."
OBJECT bgp4V2NlriLinkLocalNextHopAddr
SYNTAX InetAddress (SIZE(0|20))
DESCRIPTION
"This object is only present when RFC 2545 extensions for
IPv6 are supported by the implementation. When present,
this object shall only have a size of 20 or 0 when no
RFC 2545 double-nexthop is present."
OBJECT bgp4V2PeerInstance
SYNTAX Unsigned32 (1..4294967295)
DESCRIPTION
"This object represents an abstract index which can utilize
the full range of acceptable SNMP index values."
::= { bgp4V2Compliances 4 }
bgp4V2GlobalsGroup OBJECT-GROUP
OBJECTS { bgp4V2DiscontinuityTime }
STATUS current
DESCRIPTION
"A collection of objects providing information on global
BGP state."
::= { bgp4V2Groups 1 }
bgp4V2StdMIBTimersGroup OBJECT-GROUP
OBJECTS {
bgp4V2PeerFsmEstablishedTime,
bgp4V2PeerInUpdatesElapsedTime,
bgp4V2PeerConnectRetryInterval,
bgp4V2PeerHoldTimeConfigured,
bgp4V2PeerKeepAliveConfigured,
bgp4V2PeerMinASOrigInterval,
bgp4V2PeerMinRouteAdverInterval,
bgp4V2PeerHoldTime,
bgp4V2PeerKeepAlive
}
STATUS current
DESCRIPTION
"Objects associated with BGP peering timers."
::= { bgp4V2Groups 2 }
bgp4V2StdMIBCountersGroup OBJECT-GROUP
OBJECTS {
bgp4V2PeerInUpdates,
bgp4V2PeerOutUpdates,
bgp4V2PeerInTotalMessages,
bgp4V2PeerOutTotalMessages,
bgp4V2PeerFsmEstablishedTransitions,
bgp4V2PrefixInPrefixes,
bgp4V2PrefixInPrefixesAccepted,
bgp4V2PrefixOutPrefixes
}
STATUS current
DESCRIPTION
"Objects to count discrete events and exchanges on BGP
sessions."
::= { bgp4V2Groups 3 }
bgp4V2StdMIBErrorsGroup OBJECT-GROUP
OBJECTS {
bgp4V2PeerLastErrorCodeReceived,
bgp4V2PeerLastErrorSubCodeReceived,
bgp4V2PeerLastErrorReceivedData,
bgp4V2PeerLastErrorReceivedTime,
bgp4V2PeerLastErrorReceivedText,
bgp4V2PeerLastErrorCodeSent,
bgp4V2PeerLastErrorSubCodeSent,
bgp4V2PeerLastErrorSentData,
bgp4V2PeerLastErrorSentTime,
bgp4V2PeerLastErrorSentText
}
STATUS current
DESCRIPTION
"Errors received on BGP peering sessions."
::= { bgp4V2Groups 5 }
bgp4V2StdMIBPeerGroup OBJECT-GROUP
OBJECTS {
bgp4V2PeerState,
bgp4V2PeerAdminStatus,
bgp4V2PeerLocalPort,
bgp4V2PeerLocalAs,
bgp4V2PeerRemotePort,
bgp4V2PeerRemoteAs,
bgp4V2PeerLocalIdentifier,
bgp4V2PeerRemoteIdentifier,
bgp4V2PeerDescription
}
STATUS current
DESCRIPTION
"Core object types on BGP peering sessions."
::= { bgp4V2Groups 6 }
bgp4V2StdMIBNlriGroup OBJECT-GROUP
OBJECTS {
bgp4V2NlriAsPathCalcLength,
bgp4V2NlriAsPathString,
bgp4V2NlriBest,
bgp4V2NlriCalcLocalPref,
bgp4V2NlriPrefixType,
bgp4V2AdjRibsOutRoute,
bgp4V2NlriAggregatorPresent,
bgp4V2NlriAggregatorAS,
bgp4V2NlriAggregatorAddr,
bgp4V2NlriAtomicAggregate,
bgp4V2NlriLocalPref,
bgp4V2NlriLocalPrefPresent,
bgp4V2NlriMed,
bgp4V2NlriMedPresent,
bgp4V2NlriNextHopAddr,
bgp4V2NlriNextHopAddrType,
bgp4V2NlriLinkLocalNextHopAddrType,
bgp4V2NlriLinkLocalNextHopAddr,
bgp4V2NlriOrigin,
bgp4V2NlriAsPath,
bgp4V2NlriPathAttrUnknown
}
STATUS current
DESCRIPTION
"Attributes received on BGP peering sessions."
::= { bgp4V2Groups 7 }
bgp4V2StdMIBNotificationGroup NOTIFICATION-GROUP
NOTIFICATIONS {
bgp4V2EstablishedNotification,
bgp4V2BackwardTransitionNotification
}
STATUS current
DESCRIPTION
"Notifications in this modules are completely optional."
::= { bgp4V2Groups 8 }
END
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There are no management objects defined in this MIB module that have a MAX-ACCESS clause of read-write and/or read-create. So, if this MIB module is implemented correctly, then there is no risk that an intruder can alter or create any management objects of this MIB module via direct SNMP SET operations.
Some of 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. These are the tables and objects and their sensitivity/vulnerability:
SNMP versions prior to SNMPv3 did not include adequate security. Even if the network itself is secure (for example by using IPSec), even then, 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.
It is RECOMMENDED that implementers consider the security features as provided by the SNMPv3 framework (see [RFC3410] (Case, J., Mundy, R., Partain, D., and B. Stewart, “Introduction and Applicability Statements for Internet-Standard Management Framework,” December 2002.), section 8), including full support for the SNMPv3 cryptographic mechanisms (for authentication and privacy).
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.
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IANA is requested to assign this MIB module an OID under mib-2.
| TOC |
This document owes significant thanks over the years to Wayne Tackabury, Susan Hares and the members of the IDR and OPS-NM mailing lists. This document represents several years of negotiating operational needs, Internet operational security considerations and the sheer messiness of representing the BGP protocol in SMIv2.
I owe particular thanks to Susan Hares as a mentor who let me dive head-first into the world of Internet standards work by saying, "We have this MIB that just needs a little cleanup to advance in the standards process."
| TOC |
We would like to acknowledge the assistance of all the members of the Inter-Domain Routing Working Group and individuals who contributed to RFCs 1269, 1657 and 4273.
The origin of this document is from RFC 1269 "Definitions of Managed Objects for the Border Gateway Protocol (Version 3)" written by Steve Willis and John Burruss, which was updated by John Chu to support BGP-4 in RFC 1657. The author wishes to acknowledge the fine work of these original authors.
| TOC |
| TOC |
| TOC |
| [RFC3410] | Case, J., Mundy, R., Partain, D., and B. Stewart, “Introduction and Applicability Statements for Internet-Standard Management Framework,” RFC 3410, December 2002 (TXT). |
| [RFC1657] | Willis, S., Burruss, J., and J. Chu, “Definitions of Managed Objects for the Fourth Version of the Border Gateway Protocol (BGP-4) using SMIv2,” RFC 1657, July 1994 (TXT). |
| [RFC3107] | Rekhter, Y. and E. Rosen, “Carrying Label Information in BGP-4,” RFC 3107, May 2001 (TXT). |
| [RFC4022] | Raghunarayan, R., “Management Information Base for the Transmission Control Protocol (TCP),” RFC 4022, March 2005 (TXT). |
| [RFC4456] | Bates, T., Chen, E., and R. Chandra, “BGP Route Reflection: An Alternative to Full Mesh Internal BGP (IBGP),” RFC 4456, April 2006 (TXT). |
| TOC |
| Jeffrey Haas | |
| Arbor Networks | |
| EMail: | jhaas@arbor.net |