Network Working Group S. Willis
INTERNET DRAFT Bay Networks
J. Burruss
Windata
J. Chu
IBM Corporation
J. Johnson
cisco Systems
March 1996
Definitions of Managed Objects
for the Fourth Version of Border Gateway Protocol (BGP-4)
<draft-ietf-idr-bgp4-mib-02.txt>
Status of this Memo
This document is an Internet-Draft. 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.''
To learn the current status of any Internet-Draft, please check the
``1id-abstracts.txt'' listing contained in the Internet- Drafts Shadow
Directories on ftp.is.co.za (Africa), nic.nordu.net (Europe),
munnari.oz.au (Pacific Rim), ds.internic.net (US East Coast), or
ftp.isi.edu (US West Coast).
Abstract
This memo is an extension to the SNMP MIB. It specifies an IAB
standards track protocol for the Internet community, and requests
discussion and suggestions for improvements. The origin of this memo is
from RFC 1269 "Definitions of Managed Objects for the Board Gateway
Protocol (Version 3)" written by the first two authors of this memo,
which was updated to support BGP-4 in RFC 1657. This memo fixes errors
introduced when the MIB was converted to use the SNMPv2 SMI, as well as
updates references to the Draft Standard SNMPv2 SMI documents.
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Distribution of this memo is unlimited. Please forward comments to
bgp@ans.net.
1. Introduction
This memo defines an experimental portion of the Management Information
Base (MIB) for use with network management protocols in the Internet
community. In particular, it describes managed objects used for
managing the Border Gateway Protocol Version 4 or lower [1, 2].
2. The SNMP Network Management Framework
The SNMP Network Management Framework consists of several components.
For the purpose of this specification, the applicable components of the
Framework are the SMI and related documents [3, 4, 5], which define the
mechanisms used for describing and naming objects for the purpose of
management.
The Framework permits new objects to be defined for the purpose of
experimentation and evaluation.
3. Object Definitions
Managed objects are accessed via a virtual information store, termed the
Management Information Base or MIB. Objects in the MIB are defined
using the subset of Abstract Syntax Notation One (ASN.1) defined in the
SMI. In particular, each object type is named by an OBJECT IDENTIFIER,
an administratively assigned name. The object type together with an
object instance serves to uniquely identify a specific instantiation of
the object. For human convenience, we often use a textual string,
termed the descriptor, to refer to the object type.
4. Overview
These objects are used to control and manage a BGP-4 implementation.
Apart from a few system-wide scalar objects, this MIB is broken into
three tables: the BGP Peer Table, the BGP Received Path Attribute Table,
and the BGP-4 Received Path Attribute Table. The BGP Peer Table
contains information about state and current activity of connections
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with the BGP peers. The Received Path Attribute Table contains path
attributes received from all peers running BGP version 3 or less. The
BGP-4 Received Path Attribute Table contains path attributes received
from all BGP-4 peers. The actual attributes used in determining a route
are a subset of the received attribute tables after local routing policy
has been applied.
5. Definitions
BGP4-MIB DEFINITIONS ::= BEGIN
IMPORTS
MODULE-IDENTITY, OBJECT-TYPE, NOTIFICATION-TYPE,
IpAddress, Integer32, Counter32, Gauge32, mib-2
FROM SNMPv2-SMI
MODULE-COMPLIANCE, OBJECT-GROUP, NOTIFICATION-GROUP
FROM SNMPv2-CONF;
bgp MODULE-IDENTITY
LAST-UPDATED "9601080000Z"
ORGANIZATION "IETF BGP Working Group"
CONTACT-INFO
" John Chu (Editor)
Postal: IBM Corp.
P.O.Box 704
Yorktown Heights, NY 10598
US
Tel: +1 914 784 7839
Fax: +1 914 784 6205
E-mail: jychu@watson.ibm.com
Jeff Johnson (Editor)
Postal: cisco Systems
170 W. Tasman Drive
San Jose, CA 95134
Tel: +1 408 526 7789
Fax: +1 408 526 4860
E-mail: jjohnson@cisco.com"
DESCRIPTION
"The MIB module for BGP-4."
REVISION "9601080000Z"
DESCRIPTION
"1) Fixed the definitions of the traps to
make them equivalent to their initial
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definition in RFC 1269.
2) Added compliance and conformance info."
::= { mib-2 15 }
bgpVersion OBJECT-TYPE
SYNTAX OCTET STRING (SIZE (1..255))
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Vector of supported BGP protocol version
numbers. Each peer negotiates the version
from this vector. Versions are identified
via the string of bits contained within this
object. The first octet contains bits 0 to
7, the second octet contains bits 8 to 15,
and so on, with the most significant bit
referring to the lowest bit number in the
octet (e.g., the MSB of the first octet
refers to bit 0). If a bit, i, is present
and set, then the version (i+1) of the BGP
is supported."
::= { bgp 1 }
bgpLocalAs OBJECT-TYPE
SYNTAX INTEGER (0..65535)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The local autonomous system number."
::= { bgp 2 }
-- BGP Peer table. This table contains, one entry per BGP
-- peer, information about the BGP peer.
bgpPeerTable OBJECT-TYPE
SYNTAX SEQUENCE OF BgpPeerEntry
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."
::= { bgp 3 }
bgpPeerEntry OBJECT-TYPE
SYNTAX BgpPeerEntry
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MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Entry containing information about the
connection with a BGP peer."
INDEX { bgpPeerRemoteAddr }
::= { bgpPeerTable 1 }
BgpPeerEntry ::= SEQUENCE {
bgpPeerIdentifier
IpAddress,
bgpPeerState
INTEGER,
bgpPeerAdminStatus
INTEGER,
bgpPeerNegotiatedVersion
Integer32,
bgpPeerLocalAddr
IpAddress,
bgpPeerLocalPort
INTEGER,
bgpPeerRemoteAddr
IpAddress,
bgpPeerRemotePort
INTEGER,
bgpPeerRemoteAs
INTEGER,
bgpPeerInUpdates
Counter32,
bgpPeerOutUpdates
Counter32,
bgpPeerInTotalMessages
Counter32,
bgpPeerOutTotalMessages
Counter32,
bgpPeerLastError
OCTET STRING,
bgpPeerFsmEstablishedTransitions
Counter32,
bgpPeerFsmEstablishedTime
Gauge32,
bgpPeerConnectRetryInterval
INTEGER,
bgpPeerHoldTime
INTEGER,
bgpPeerKeepAlive
INTEGER,
bgpPeerHoldTimeConfigured
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INTEGER,
bgpPeerKeepAliveConfigured
INTEGER,
bgpPeerMinASOriginationInterval
INTEGER,
bgpPeerMinRouteAdvertisementInterval
INTEGER,
bgpPeerInUpdateElapsedTime
Gauge32
}
bgpPeerIdentifier OBJECT-TYPE
SYNTAX IpAddress
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The BGP Identifier of this entry's BGP peer."
::= { bgpPeerEntry 1 }
bgpPeerState 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."
::= { bgpPeerEntry 2 }
bgpPeerAdminStatus OBJECT-TYPE
SYNTAX INTEGER {
stop(1),
start(2)
}
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The desired state of the BGP connection. A
transition from 'stop' to 'start' will cause
the BGP Start Event to be generated. A
transition from 'start' to 'stop' will cause
the BGP Stop Event to be generated. This
parameter can be used to restart BGP peer
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connections. Care should be used in providing
write access to this object without adequate
authentication."
::= { bgpPeerEntry 3 }
bgpPeerNegotiatedVersion OBJECT-TYPE
SYNTAX Integer32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The negotiated version of BGP running between
the two peers."
::= { bgpPeerEntry 4 }
bgpPeerLocalAddr OBJECT-TYPE
SYNTAX IpAddress
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The local IP address of this entry's BGP
connection."
::= { bgpPeerEntry 5 }
bgpPeerLocalPort OBJECT-TYPE
SYNTAX INTEGER (0..65535)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The local port for the TCP connection between
the BGP peers."
::= { bgpPeerEntry 6 }
bgpPeerRemoteAddr OBJECT-TYPE
SYNTAX IpAddress
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The remote IP address of this entry's BGP
peer."
::= { bgpPeerEntry 7 }
bgpPeerRemotePort OBJECT-TYPE
SYNTAX INTEGER (0..65535)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The remote port for the TCP connection between
the BGP peers. Note that the objects
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bgpPeerLocalAddr, bgpPeerLocalPort,
bgpPeerRemoteAddr and bgpPeerRemotePort
provide the appropriate reference to the
standard MIB TCP connection table."
::= { bgpPeerEntry 8 }
bgpPeerRemoteAs OBJECT-TYPE
SYNTAX INTEGER (0..65535)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The remote autonomous system number."
::= { bgpPeerEntry 9 }
bgpPeerInUpdates OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of BGP UPDATE messages received on
this connection. This object should be
initialized to zero (0) when the connection is
established."
::= { bgpPeerEntry 10 }
bgpPeerOutUpdates OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of BGP UPDATE messages transmitted
on this connection. This object should be
initialized to zero (0) when the connection is
established."
::= { bgpPeerEntry 11 }
bgpPeerInTotalMessages OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total number of messages received from the
remote peer on this connection. This object
should be initialized to zero when the
connection is established."
::= { bgpPeerEntry 12 }
bgpPeerOutTotalMessages OBJECT-TYPE
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SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total number of messages transmitted to
the remote peer on this connection. This object
should be initialized to zero when the
connection is established."
::= { bgpPeerEntry 13 }
bgpPeerLastError OBJECT-TYPE
SYNTAX OCTET STRING (SIZE (2))
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The last error code and subcode seen by this
peer on this connection. If no error has
occurred, this field is zero. Otherwise, the
first byte of this two byte OCTET STRING
contains the error code, and the second byte
contains the subcode."
::= { bgpPeerEntry 14 }
bgpPeerFsmEstablishedTransitions OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total number of times the BGP FSM
transitioned into the established state."
::= { bgpPeerEntry 15 }
bgpPeerFsmEstablishedTime OBJECT-TYPE
SYNTAX Gauge32
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
the router is booted."
::= { bgpPeerEntry 16 }
bgpPeerConnectRetryInterval OBJECT-TYPE
SYNTAX INTEGER (1..65535)
MAX-ACCESS read-write
STATUS current
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DESCRIPTION
"Time interval in seconds for the ConnectRetry
timer. The suggested value for this timer is
120 seconds."
::= { bgpPeerEntry 17 }
bgpPeerHoldTime OBJECT-TYPE
SYNTAX INTEGER ( 0 | 3..65535 )
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 by
using the smaller of the value in
bgpPeerHoldTimeConfigured and the Hold Time
received in the OPEN message. This value
must be at lease three seconds if it is not
zero (0) in which case the Hold Timer has
not been established with the peer, or, the
value of bgpPeerHoldTimeConfigured is zero (0)."
::= { bgpPeerEntry 18 }
bgpPeerKeepAlive OBJECT-TYPE
SYNTAX INTEGER ( 0 | 1..21845 )
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 bgpPeerHoldTime,
it has the same proportion as what
bgpPeerKeepAliveConfigured has when compared
with bgpPeerHoldTimeConfigured. 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
bgpPeerKeepAliveConfigured is zero (0)."
::= { bgpPeerEntry 19 }
bgpPeerHoldTimeConfigured OBJECT-TYPE
SYNTAX INTEGER ( 0 | 3..65535 )
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"Time interval in seconds for the Hold Time
configured for this BGP speaker with this peer.
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This value is placed in an OPEN message sent to
this peer by this BGP speaker, and is compared
with the Hold Time field in an OPEN message
received from the peer when determining the Hold
Time (bgpPeerHoldTime) with the peer. This value
must not be less than three seconds if it is not
zero (0) in which case the Hold Time is NOT to be
established with the peer. The suggested value for
this timer is 90 seconds."
::= { bgpPeerEntry 20 }
bgpPeerKeepAliveConfigured OBJECT-TYPE
SYNTAX INTEGER ( 0 | 1..21845 )
MAX-ACCESS read-write
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 configured to
be one third of that of bgpPeerHoldTimeConfigured.
If the value of this object is zero (0), no
periodical KEEPALIVE messages are sent to the peer
after the BGP connection has been established. The
suggested value for this timer is 30 seconds."
::= { bgpPeerEntry 21 }
bgpPeerMinASOriginationInterval OBJECT-TYPE
SYNTAX INTEGER (1..65535)
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"Time interval in seconds for the
MinASOriginationInterval timer.
The suggested value for this timer is 15 seconds."
::= { bgpPeerEntry 22 }
bgpPeerMinRouteAdvertisementInterval OBJECT-TYPE
SYNTAX INTEGER (1..65535)
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"Time interval in seconds for the
MinRouteAdvertisementInterval timer.
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The suggested value for this timer is 30 seconds."
::= { bgpPeerEntry 23 }
bgpPeerInUpdateElapsedTime OBJECT-TYPE
SYNTAX Gauge32
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)."
::= { bgpPeerEntry 24 }
bgpIdentifier OBJECT-TYPE
SYNTAX IpAddress
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The BGP Identifier of local system."
::= { bgp 4 }
-- Received Path Attribute Table. This table contains,
-- one entry per path to a network, path attributes
-- received from all peers running BGP version 3 or less.
-- This table is obsolete, having been replaced in
-- functionality with the bgp4PathAttrTable.
bgpRcvdPathAttrTable OBJECT-TYPE
SYNTAX SEQUENCE OF BgpPathAttrEntry
MAX-ACCESS not-accessible
STATUS obsolete
DESCRIPTION
"The BGP Received Path Attribute Table contains
information about paths to destination networks
received from all peers running BGP version 3 or
less."
::= { bgp 5 }
bgpPathAttrEntry OBJECT-TYPE
SYNTAX BgpPathAttrEntry
MAX-ACCESS not-accessible
STATUS obsolete
DESCRIPTION
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"Information about a path to a network."
INDEX { bgpPathAttrDestNetwork,
bgpPathAttrPeer }
::= { bgpRcvdPathAttrTable 1 }
BgpPathAttrEntry ::= SEQUENCE {
bgpPathAttrPeer
IpAddress,
bgpPathAttrDestNetwork
IpAddress,
bgpPathAttrOrigin
INTEGER,
bgpPathAttrASPath
OCTET STRING,
bgpPathAttrNextHop
IpAddress,
bgpPathAttrInterASMetric
Integer32
}
bgpPathAttrPeer OBJECT-TYPE
SYNTAX IpAddress
MAX-ACCESS read-only
STATUS obsolete
DESCRIPTION
"The IP address of the peer where the path
information was learned."
::= { bgpPathAttrEntry 1 }
bgpPathAttrDestNetwork OBJECT-TYPE
SYNTAX IpAddress
MAX-ACCESS read-only
STATUS obsolete
DESCRIPTION
"The address of the destination network."
::= { bgpPathAttrEntry 2 }
bgpPathAttrOrigin OBJECT-TYPE
SYNTAX INTEGER {
igp(1),-- networks are interior
egp(2),-- networks learned via EGP
incomplete(3) -- undetermined
}
MAX-ACCESS read-only
STATUS obsolete
DESCRIPTION
"The ultimate origin of the path information."
::= { bgpPathAttrEntry 3 }
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bgpPathAttrASPath OBJECT-TYPE
SYNTAX OCTET STRING (SIZE (2..255))
MAX-ACCESS read-only
STATUS obsolete
DESCRIPTION
"The set of ASs that must be traversed to reach
the network. This object is probably best
represented as SEQUENCE OF INTEGER. For SMI
compatibility, though, it is represented as
OCTET STRING. Each AS is represented as a pair
of octets according to the following algorithm:
first-byte-of-pair = ASNumber / 256;
second-byte-of-pair = ASNumber & 255;"
::= { bgpPathAttrEntry 4 }
bgpPathAttrNextHop OBJECT-TYPE
SYNTAX IpAddress
MAX-ACCESS read-only
STATUS obsolete
DESCRIPTION
"The address of the border router that should
be used for the destination network."
::= { bgpPathAttrEntry 5 }
bgpPathAttrInterASMetric OBJECT-TYPE
SYNTAX Integer32
MAX-ACCESS read-only
STATUS obsolete
DESCRIPTION
"The optional inter-AS metric. If this
attribute has not been provided for this route,
the value for this object is 0."
::= { bgpPathAttrEntry 6 }
-- BGP-4 Received Path Attribute Table. This table contains,
-- one entry per path to a network, path attributes
-- received from all peers running BGP-4.
bgp4PathAttrTable OBJECT-TYPE
SYNTAX SEQUENCE OF Bgp4PathAttrEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The BGP-4 Received Path Attribute Table contains
information about paths to destination networks
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received from all BGP4 peers."
::= { bgp 6 }
bgp4PathAttrEntry OBJECT-TYPE
SYNTAX Bgp4PathAttrEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Information about a path to a network."
INDEX { bgp4PathAttrIpAddrPrefix,
bgp4PathAttrIpAddrPrefixLen,
bgp4PathAttrPeer }
::= { bgp4PathAttrTable 1 }
Bgp4PathAttrEntry ::= SEQUENCE {
bgp4PathAttrPeer
IpAddress,
bgp4PathAttrIpAddrPrefixLen
INTEGER,
bgp4PathAttrIpAddrPrefix
IpAddress,
bgp4PathAttrOrigin
INTEGER,
bgp4PathAttrASPathSegment
OCTET STRING,
bgp4PathAttrNextHop
IpAddress,
bgp4PathAttrMultiExitDisc
INTEGER,
bgp4PathAttrLocalPref
INTEGER,
bgp4PathAttrAtomicAggregate
INTEGER,
bgp4PathAttrAggregatorAS
INTEGER,
bgp4PathAttrAggregatorAddr
IpAddress,
bgp4PathAttrCalcLocalPref
INTEGER,
bgp4PathAttrBest
INTEGER,
bgp4PathAttrUnknown
OCTET STRING
}
bgp4PathAttrPeer OBJECT-TYPE
SYNTAX IpAddress
MAX-ACCESS read-only
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STATUS current
DESCRIPTION
"The IP address of the peer where the path
information was learned."
::= { bgp4PathAttrEntry 1 }
bgp4PathAttrIpAddrPrefixLen OBJECT-TYPE
SYNTAX INTEGER (0..32)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Length in bits of the IP address prefix in the
Network Layer Reachability Information field."
::= { bgp4PathAttrEntry 2 }
bgp4PathAttrIpAddrPrefix OBJECT-TYPE
SYNTAX IpAddress
MAX-ACCESS read-only
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 bgp4PathAttrIpAddrPrefixLen.
Any bits beyond the length specified by
bgp4PathAttrIpAddrPrefixLen are zeroed."
::= { bgp4PathAttrEntry 3 }
bgp4PathAttrOrigin OBJECT-TYPE
SYNTAX INTEGER {
igp(1),-- networks are interior
egp(2),-- networks learned via EGP
incomplete(3) -- undetermined
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The ultimate origin of the path information."
::= { bgp4PathAttrEntry 4 }
bgp4PathAttrASPathSegment OBJECT-TYPE
SYNTAX OCTET STRING (SIZE (2..255))
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The sequence of AS path segments. Each AS
path segment is represented by a triple
<type, length, value>.
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The type is a 1-octet field which has two
possible values:
1 AS_SET: unordered set of ASs a
route in the UPDATE message
has traversed
2 AS_SEQUENCE: ordered set of ASs
a route in the UPDATE message
has traversed.
The length is a 1-octet field containing the
number of ASs in the value field.
The value field contains one or more AS
numbers, each AS is represented in the octet
string as a pair of octets according to the
following algorithm:
first-byte-of-pair = ASNumber / 256;
second-byte-of-pair = ASNumber & 255;"
::= { bgp4PathAttrEntry 5 }
bgp4PathAttrNextHop OBJECT-TYPE
SYNTAX IpAddress
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The address of the border router that should
be used for the destination network."
::= { bgp4PathAttrEntry 6 }
bgp4PathAttrMultiExitDisc OBJECT-TYPE
SYNTAX INTEGER (-1..2147483647)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This metric is used to discriminate between
multiple exit points to an adjacent autonomous
system. A value of -1 indicates the absence of
this attribute."
::= { bgp4PathAttrEntry 7 }
bgp4PathAttrLocalPref OBJECT-TYPE
SYNTAX INTEGER (-1..2147483647)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The originating BGP4 speaker's degree of
preference for an advertised route. A value of
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-1 indicates the absence of this attribute."
::= { bgp4PathAttrEntry 8 }
bgp4PathAttrAtomicAggregate OBJECT-TYPE
SYNTAX INTEGER {
lessSpecificRrouteNotSelected(1),
lessSpecificRouteSelected(2)
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Whether or not a system has selected
a less specific route without selecting a
more specific route."
::= { bgp4PathAttrEntry 9 }
bgp4PathAttrAggregatorAS OBJECT-TYPE
SYNTAX INTEGER (0..65535)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The AS number of the last BGP4 speaker that
performed route aggregation. A value of zero (0)
indicates the absence of this attribute."
::= { bgp4PathAttrEntry 10 }
bgp4PathAttrAggregatorAddr OBJECT-TYPE
SYNTAX IpAddress
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The IP address of the last BGP4 speaker that
performed route aggregation. A value of
0.0.0.0 indicates the absence of this attribute."
::= { bgp4PathAttrEntry 11 }
bgp4PathAttrCalcLocalPref OBJECT-TYPE
SYNTAX INTEGER (-1..2147483647)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The degree of preference calculated by the
receiving BGP4 speaker for an advertised route.
A value of -1 indicates the absence of this
attribute."
::= { bgp4PathAttrEntry 12 }
bgp4PathAttrBest OBJECT-TYPE
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SYNTAX INTEGER {
false(1),-- not chosen as best route
true(2) -- chosen as best route
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"An indication of whether or not this route
was chosen as the best BGP4 route."
::= { bgp4PathAttrEntry 13 }
bgp4PathAttrUnknown OBJECT-TYPE
SYNTAX OCTET STRING (SIZE(0..255))
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"One or more path attributes not understood
by this BGP4 speaker. Size zero (0) indicates
the absence of such attribute(s). Octets
beyond the maximum size, if any, are not
recorded by this object."
::= { bgp4PathAttrEntry 14 }
-- Traps.
-- note that in RFC 1657, bgpTraps was incorrectly
-- assigned a value of { bgp 7 }, and each of the
-- traps had the bgpPeerRemoteAddr object inappropriately
-- removed from their OBJECTS clause. The following
-- definitions restore the semantics of the traps as
-- they were initially defined in RFC 1269.
-- { bgp 7 } is unused
bgpTraps OBJECT IDENTIFIER ::= { bgp 0 }
bgpEstablished NOTIFICATION-TYPE
OBJECTS { bgpPeerRemoteAddr,
bgpPeerLastError,
bgpPeerState }
STATUS current
DESCRIPTION
"The BGP Established event is generated when
the BGP FSM enters the ESTABLISHED state."
::= { bgpTraps 1 }
bgpBackwardTransition NOTIFICATION-TYPE
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OBJECTS { bgpPeerRemoteAddr,
bgpPeerLastError,
bgpPeerState }
STATUS current
DESCRIPTION
"The BGPBackwardTransition Event is generated
when the BGP FSM moves from a higher numbered
state to a lower numbered state."
::= { bgpTraps 2 }
-- conformance information
bgpMIBConformance OBJECT IDENTIFIER ::= { bgp 8 }
bgpMIBCompliances OBJECT IDENTIFIER ::= { bgpMIBConformance 1 }
bgpMIBGroups OBJECT IDENTIFIER ::= { bgpMIBConformance 2 }
-- compliance statements
bgpMIBCompliance MODULE-COMPLIANCE
STATUS current
DESCRIPTION
"The compliance statement for entities which
implement the BGP4 mib."
MODULE -- this module
MANDATORY-GROUPS { bgp4MIBGlobalsGroup,
bgp4MIBPeerGroup,
bgp4MIBPathAttrGroup,
bgp4MIBNotificationGroup }
::= { bgpMIBCompliances 1 }
-- units of conformance
bgp4MIBGlobalsGroup OBJECT-GROUP
OBJECTS { bgpVersion,
bgpLocalAs,
bgpIdentifier }
STATUS current
DESCRIPTION
"A collection of objects providing information
on global BGP state."
::= { bgpMIBGroups 1 }
bgp4MIBPeerGroup OBJECT-GROUP
OBJECTS { bgpPeerIdentifier,
bgpPeerState,
bgpPeerAdminStatus,
bgpPeerNegotiatedVersion,
bgpPeerLocalAddr,
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bgpPeerLocalPort,
bgpPeerRemoteAddr,
bgpPeerRemotePort,
bgpPeerRemoteAs,
bgpPeerInUpdates,
bgpPeerOutUpdates,
bgpPeerInTotalMessages,
bgpPeerOutTotalMessages,
bgpPeerLastError,
bgpPeerFsmEstablishedTransitions,
bgpPeerFsmEstablishedTime,
bgpPeerConnectRetryInterval,
bgpPeerHoldTime,
bgpPeerKeepAlive,
bgpPeerHoldTimeConfigured,
bgpPeerKeepAliveConfigured,
bgpPeerMinASOriginationInterval,
bgpPeerMinRouteAdvertisementInterval,
bgpPeerInUpdateElapsedTime }
STATUS current
DESCRIPTION
"A collection of objects for managing
BGP peers."
::= { bgpMIBGroups 2 }
bgp4MIBRcvdPathAttrGroup OBJECT-GROUP
OBJECTS { bgpPathAttrPeer,
bgpPathAttrDestNetwork,
bgpPathAttrOrigin,
bgpPathAttrASPath,
bgpPathAttrNextHop,
bgpPathAttrInterASMetric }
STATUS obsolete
DESCRIPTION
"A collection of objects for managing BGP
path entries.
This conformance group is obsolete,
replaced by bgp4MIBPathAttrGroup."
::= { bgpMIBGroups 3 }
bgp4MIBPathAttrGroup OBJECT-GROUP
OBJECTS { bgp4PathAttrPeer,
bgp4PathAttrIpAddrPrefixLen,
bgp4PathAttrIpAddrPrefix,
bgp4PathAttrOrigin,
bgp4PathAttrASPathSegment,
bgp4PathAttrNextHop,
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bgp4PathAttrMultiExitDisc,
bgp4PathAttrLocalPref,
bgp4PathAttrAtomicAggregate,
bgp4PathAttrAggregatorAS,
bgp4PathAttrAggregatorAddr,
bgp4PathAttrCalcLocalPref,
bgp4PathAttrBest,
bgp4PathAttrUnknown }
STATUS current
DESCRIPTION
"A collection of objects for managing
BGP path entries."
::= { bgpMIBGroups 4 }
bgp4MIBNotificationGroup NOTIFICATION-GROUP
NOTIFICATIONS { bgpEstablished,
bgpBackwardTransition }
STATUS current
DESCRIPTION
"A collection of notifications for signaling
changes in BGP peer relationships."
::= { bgpMIBGroups 4 }
END
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6. Acknowledgements
We would like to acknowledge the assistance of all the members of the
Inter-Domain Routing Working Group, and particularly the following
individuals:
Yakov Rekhter, cisco Systems
Rob Coltun, Fore
Guy Almes, ANS
Jeff Honig, Cornell Theory Center
Marshall T. Rose, Dover Beach Consulting, Inc.
Dennis Ferguson, Ipsilon
Mike Mathis, PSC
John Krawczyk, Bay Networks
Curtis Villamizar, ANS
Dave LeRoy, Pencom Systems
Paul Traina, cisco Systems
Andrew Partan, UUNET
Robert Snyder, cisco Systems
Dimitry Haskin, Bay Networks
Peder Chr Norgaard, Telebit Communications A/S
Joel Halpern, NewBridge
Nick Thille, cisco Systems
7. References
[1] Rekhter, Y., Li, T., "A Border Gateway Protocol 4 (BGP-4)",
RFC 1771, March 1995.
[2] Rekhter, Y., Gross, P., "Application of the Border
Gateway Protocol in the Internet", RFC 1772, March 1995.
[3] SNMPv2 Working Group, Case, J., McCloghrie, K., Rose, M., and
S. Waldbusser, "Structure of Management Information for Version 2
of the Simple Network Management Protocol (SNMPv2)", RFC 1902,
January 1996.
[4] SNMPv2 Working Group, Case, J., McCloghrie, K., Rose, M., and
S. Waldbusser, "Textual Conventions for Version 2 of the Simple
Network Management Protocol (SNMPv2)", RFC 1903, January 1996.
[5] SNMPv2 Working Group, Case, J., McCloghrie, K., Rose, M., and
S. Waldbusser, "Conformance Statements for Version 2 of the
Simple Network Management Protocol (SNMPv2)", RFC 1904,
January 1996.
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8. Security Considerations
Security issues are not discussed in this memo.
Authors' Address
Steve Willis
Bay Networks, Inc.
3 Federal St
Billerica, MA 01821
Phone: +1 508 436 3927
Email: swillis@BayNetworks.com
John Burruss
Windata Inc.
543 Great Road
Littleton MA 01460
Phone: +1 508 952 0170
Email: jburruss@windata.com
John Chu
IBM Corporation
P.O.Box 704
Yorktown Heights, NY 10598
Phone: +1 914 784 7839
Email: jychu@watson.ibm.com
Jeff Johnson
cisco Systems
170 W. Tasman Drive
San Jose, CA 95134
Phone: +1 408 526 7789
Email: jjohnson@cisco.com
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