module BGP4-MIB {

    yang-version 1;

    namespace
      "urn:ietf:params:xml:ns:yang:smiv2:BGP4-MIB";

    prefix BGP4-MIB;

    import ietf-inet-types {
      prefix inet;
    }
    import ietf-yang-smiv2 {
      prefix smiv2;
    }
    import ietf-yang-types {
      prefix yang;
    }

    organization "IETF BGP Working Group";

    contact
      "   John Chu  (Editor)
Postal: IBM Corp.
	P.O.Box 218
	Yorktown Heights, NY 10598
	US

   Tel: +1 914 945 3156
   Fax: +1 914 945 2141
E-mail: jychu@watson.ibm.com";

    description "The MIB module for BGP-4.";

    revision "1994-05-05" {
      description
        "[Revision added by libsmi due to a LAST-UPDATED clause.]";
    }

    smiv2:alias "bgp" {
      smiv2:oid "1.3.6.1.2.1.15";
    }
    smiv2:alias "bgpTraps" {
      smiv2:oid "1.3.6.1.2.1.15.7";
    }

    container BGP4-MIB {
      config false;
      container bgp {
        smiv2:oid "1.3.6.1.2.1.15";
        leaf bgpVersion {
          smiv2:max-access "read-only";
          smiv2:oid "1.3.6.1.2.1.15.1";
          type binary {
            length "1..255";
          }
          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.";
        }

        leaf bgpLocalAs {
          smiv2:max-access "read-only";
          smiv2:oid "1.3.6.1.2.1.15.2";
          type int32 {
            range "0..65535";
          }
          description
            "The local autonomous system number.";
        }

        leaf bgpIdentifier {
          smiv2:max-access "read-only";
          smiv2:oid "1.3.6.1.2.1.15.4";
          type inet:ipv4-address;
          description
            "The BGP Identifier of local system.";
        }
      }  // container bgp

      container bgpPeerTable {
        smiv2:oid "1.3.6.1.2.1.15.3";
        description
          "BGP peer table.  This table contains,
one entry per BGP peer, information about
the connections with BGP peers.";
        list bgpPeerEntry {
          smiv2:oid "1.3.6.1.2.1.15.3.1";
          key "bgpPeerRemoteAddr";
          description
            "Entry containing information about the
connection with a BGP peer.";
          leaf bgpPeerIdentifier {
            smiv2:max-access "read-only";
            smiv2:oid "1.3.6.1.2.1.15.3.1.1";
            type inet:ipv4-address;
            description
              "The BGP Identifier of this entry's BGP
peer.";
          }

          leaf bgpPeerState {
            smiv2:max-access "read-only";
            smiv2:oid "1.3.6.1.2.1.15.3.1.2";
            type enumeration {
              enum "idle" {
                value 1;
              }
              enum "connect" {
                value 2;
              }
              enum "active" {
                value 3;
              }
              enum "opensent" {
                value 4;
              }
              enum "openconfirm" {
                value 5;
              }
              enum "established" {
                value 6;
              }
            }
            description
              "The BGP peer connection state.";
          }

          leaf bgpPeerAdminStatus {
            smiv2:max-access "read-write";
            smiv2:oid "1.3.6.1.2.1.15.3.1.3";
            type enumeration {
              enum "stop" {
                value 1;
              }
              enum "start" {
                value 2;
              }
            }
            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 connections.  Care should be used in
providing write access to this object
without adequate authentication.";
          }

          leaf bgpPeerNegotiatedVersion {
            smiv2:max-access "read-only";
            smiv2:oid "1.3.6.1.2.1.15.3.1.4";
            type int32;
            description
              "The negotiated version of BGP running
between the two peers.";
          }

          leaf bgpPeerLocalAddr {
            smiv2:max-access "read-only";
            smiv2:oid "1.3.6.1.2.1.15.3.1.5";
            type inet:ipv4-address;
            description
              "The local IP address of this entry's BGP
connection.";
          }

          leaf bgpPeerLocalPort {
            smiv2:max-access "read-only";
            smiv2:oid "1.3.6.1.2.1.15.3.1.6";
            type int32 {
              range "0..65535";
            }
            description
              "The local port for the TCP connection
between the BGP peers.";
          }

          leaf bgpPeerRemoteAddr {
            smiv2:max-access "read-only";
            smiv2:oid "1.3.6.1.2.1.15.3.1.7";
            type inet:ipv4-address;
            description
              "The remote IP address of this entry's BGP
peer.";
          }

          leaf bgpPeerRemotePort {
            smiv2:max-access "read-only";
            smiv2:oid "1.3.6.1.2.1.15.3.1.8";
            type int32 {
              range "0..65535";
            }
            description
              "The remote port for the TCP connection
between the BGP peers.  Note that the
objects bgpPeerLocalAddr,
bgpPeerLocalPort, bgpPeerRemoteAddr and
bgpPeerRemotePort provide the appropriate
reference to the standard MIB TCP
connection table.";
          }

          leaf bgpPeerRemoteAs {
            smiv2:max-access "read-only";
            smiv2:oid "1.3.6.1.2.1.15.3.1.9";
            type int32 {
              range "0..65535";
            }
            description
              "The remote autonomous system number.";
          }

          leaf bgpPeerInUpdates {
            smiv2:max-access "read-only";
            smiv2:oid "1.3.6.1.2.1.15.3.1.10";
            type yang:counter32;
            description
              "The number of BGP UPDATE messages
received on this connection.  This object
should be initialized to zero (0) when the
connection is established.";
          }

          leaf bgpPeerOutUpdates {
            smiv2:max-access "read-only";
            smiv2:oid "1.3.6.1.2.1.15.3.1.11";
            type yang:counter32;
            description
              "The number of BGP UPDATE messages
transmitted on this connection.  This
object should be initialized to zero (0)
when the connection is established.";
          }

          leaf bgpPeerInTotalMessages {
            smiv2:max-access "read-only";
            smiv2:oid "1.3.6.1.2.1.15.3.1.12";
            type yang:counter32;
            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.";
          }

          leaf bgpPeerOutTotalMessages {
            smiv2:max-access "read-only";
            smiv2:oid "1.3.6.1.2.1.15.3.1.13";
            type yang:counter32;
            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.";
          }

          leaf bgpPeerLastError {
            smiv2:max-access "read-only";
            smiv2:oid "1.3.6.1.2.1.15.3.1.14";
            type binary {
              length "2";
            }
            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.";
          }

          leaf bgpPeerFsmEstablishedTransitions {
            smiv2:max-access "read-only";
            smiv2:oid "1.3.6.1.2.1.15.3.1.15";
            type yang:counter32;
            description
              "The total number of times the BGP FSM
transitioned into the established state.";
          }

          leaf bgpPeerFsmEstablishedTime {
            smiv2:max-access "read-only";
            smiv2:oid "1.3.6.1.2.1.15.3.1.16";
            type yang:gauge32;
            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.";
          }

          leaf bgpPeerConnectRetryInterval {
            smiv2:max-access "read-write";
            smiv2:oid "1.3.6.1.2.1.15.3.1.17";
            type int32 {
              range "1..65535";
            }
            description
              "Time interval in seconds for the
ConnectRetry timer.  The suggested value
for this timer is 120 seconds.";
          }

          leaf bgpPeerHoldTime {
            smiv2:max-access "read-only";
            smiv2:oid "1.3.6.1.2.1.15.3.1.18";
            type int32 {
              range "0|3..65535";
            }
            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).";
          }

          leaf bgpPeerKeepAlive {
            smiv2:max-access "read-only";
            smiv2:oid "1.3.6.1.2.1.15.3.1.19";
            type int32 {
              range "0..21845";
            }
            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).";
          }

          leaf bgpPeerHoldTimeConfigured {
            smiv2:max-access "read-write";
            smiv2:oid "1.3.6.1.2.1.15.3.1.20";
            type int32 {
              range "0|3..65535";
            }
            description
              "Time interval in seconds for the Hold Time
configured for this BGP speaker with this
peer.  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.";
          }

          leaf bgpPeerKeepAliveConfigured {
            smiv2:max-access "read-write";
            smiv2:oid "1.3.6.1.2.1.15.3.1.21";
            type int32 {
              range "0..21845";
            }
            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.";
          }

          leaf bgpPeerMinASOriginationInterval {
            smiv2:max-access "read-write";
            smiv2:oid "1.3.6.1.2.1.15.3.1.22";
            type int32 {
              range "1..65535";
            }
            description
              "Time interval in seconds for the
MinASOriginationInterval timer.
The suggested value for this timer is 15
seconds.";
          }

          leaf bgpPeerMinRouteAdvertisementInterval {
            smiv2:max-access "read-write";
            smiv2:oid "1.3.6.1.2.1.15.3.1.23";
            type int32 {
              range "1..65535";
            }
            description
              "Time interval in seconds for the
MinRouteAdvertisementInterval timer.
The suggested value for this timer is 30
seconds.";
          }

          leaf bgpPeerInUpdateElapsedTime {
            smiv2:max-access "read-only";
            smiv2:oid "1.3.6.1.2.1.15.3.1.24";
            type yang:gauge32;
            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).";
          }

          leaf cbgpPeerPrefixAccepted {
            smiv2:max-access "read-only";
            smiv2:oid "1.3.6.1.4.1.9.9.187.1.2.1.1.1";
            type yang:counter32;
            status deprecated;
            description
              "Number of Route prefixes received on this connnection,
which are accepted after applying filters. Possible
filters are route maps, prefix lists, distributed
lists, etc.";
          }

          leaf cbgpPeerPrefixDenied {
            smiv2:max-access "read-only";
            smiv2:oid "1.3.6.1.4.1.9.9.187.1.2.1.1.2";
            type yang:counter32;
            status deprecated;
            description
              "Counter which gets incremented when a route prefix
received on this connection is denied  or when a route
prefix is denied during soft reset of this connection
if 'soft-reconfiguration' is on . This object is
initialized to zero when the peer is  configured or
the router is rebooted";
          }

          leaf cbgpPeerPrefixLimit {
            smiv2:max-access "read-write";
            smiv2:oid "1.3.6.1.4.1.9.9.187.1.2.1.1.3";
            type uint32 {
              range "1..4294967295";
            }
            status deprecated;
            description
              "Max number of route prefixes accepted on this
connection";
          }

          leaf cbgpPeerPrefixAdvertised {
            smiv2:max-access "read-only";
            smiv2:oid "1.3.6.1.4.1.9.9.187.1.2.1.1.4";
            type yang:counter32;
            status deprecated;
            description
              "Counter which gets incremented when a route prefix
is advertised on this connection. This object is
initialized to zero when the peer is configured or
the router is rebooted";
          }

          leaf cbgpPeerPrefixSuppressed {
            smiv2:max-access "read-only";
            smiv2:oid "1.3.6.1.4.1.9.9.187.1.2.1.1.5";
            type yang:counter32;
            status deprecated;
            description
              "Counter which gets incremented when a route prefix
is suppressed from being sent on this connection. This
object is initialized to zero when the peer is
configured or the router is rebooted";
          }

          leaf cbgpPeerPrefixWithdrawn {
            smiv2:max-access "read-only";
            smiv2:oid "1.3.6.1.4.1.9.9.187.1.2.1.1.6";
            type yang:counter32;
            status deprecated;
            description
              "Counter which gets incremented when a route prefix
is withdrawn on this connection. This object is
initialized to zero when the peer is configured or
the router is rebooted";
          }

          leaf cbgpPeerLastErrorTxt {
            smiv2:max-access "read-only";
            smiv2:oid "1.3.6.1.4.1.9.9.187.1.2.1.1.7";
            type snmp-framework:SnmpAdminString;
            description
              "Implementation specific error description for
bgpPeerLastErrorReceived.";
          }

          leaf cbgpPeerPrevState {
            smiv2:max-access "read-only";
            smiv2:oid "1.3.6.1.4.1.9.9.187.1.2.1.1.8";
            type enumeration {
              enum "none" {
                value 0;
              }
              enum "idle" {
                value 1;
              }
              enum "connect" {
                value 2;
              }
              enum "active" {
                value 3;
              }
              enum "opensent" {
                value 4;
              }
              enum "openconfirm" {
                value 5;
              }
              enum "established" {
                value 6;
              }
            }
            description
              "The BGP peer connection previous state.";
            reference
              "Section 8, RFC 1771, A Border Gateway Protocol 4
              (BGP-4).";

          }
        }  // list bgpPeerEntry
      }  // container bgpPeerTable

      container bgpRcvdPathAttrTable {
        smiv2:oid "1.3.6.1.2.1.15.5";
        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.";
        list bgpPathAttrEntry {
          smiv2:oid "1.3.6.1.2.1.15.5.1";
          key "bgpPathAttrDestNetwork bgpPathAttrPeer";
          status obsolete;
          description
            "Information about a path to a network.";
          leaf bgpPathAttrPeer {
            smiv2:max-access "read-only";
            smiv2:oid "1.3.6.1.2.1.15.5.1.1";
            type inet:ipv4-address;
            status obsolete;
            description
              "The IP address of the peer where the path
information was learned.";
          }

          leaf bgpPathAttrDestNetwork {
            smiv2:max-access "read-only";
            smiv2:oid "1.3.6.1.2.1.15.5.1.2";
            type inet:ipv4-address;
            status obsolete;
            description
              "The address of the destination network.";
          }

          leaf bgpPathAttrOrigin {
            smiv2:max-access "read-only";
            smiv2:oid "1.3.6.1.2.1.15.5.1.3";
            type enumeration {
              enum "igp" {
                value 1;
              }
              enum "egp" {
                value 2;
              }
              enum "incomplete" {
                value 3;
              }
            }
            status obsolete;
            description
              "The ultimate origin of the path information.";
          }

          leaf bgpPathAttrASPath {
            smiv2:max-access "read-only";
            smiv2:oid "1.3.6.1.2.1.15.5.1.4";
            type binary {
              length "2..255";
            }
            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;";
          }

          leaf bgpPathAttrNextHop {
            smiv2:max-access "read-only";
            smiv2:oid "1.3.6.1.2.1.15.5.1.5";
            type inet:ipv4-address;
            status obsolete;
            description
              "The address of the border router that
should be used for the destination
network.";
          }

          leaf bgpPathAttrInterASMetric {
            smiv2:max-access "read-only";
            smiv2:oid "1.3.6.1.2.1.15.5.1.6";
            type int32;
            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.";
          }
        }  // list bgpPathAttrEntry
      }  // container bgpRcvdPathAttrTable

      container bgp4PathAttrTable {
        smiv2:oid "1.3.6.1.2.1.15.6";
        description
          "The BGP-4 Received Path Attribute Table
contains information about paths to
destination networks received from all
BGP4 peers.";
        list bgp4PathAttrEntry {
          smiv2:oid "1.3.6.1.2.1.15.6.1";
          key "bgp4PathAttrIpAddrPrefix bgp4PathAttrIpAddrPrefixLen bgp4PathAttrPeer";
          description
            "Information about a path to a network.";
          leaf bgp4PathAttrPeer {
            smiv2:max-access "read-only";
            smiv2:oid "1.3.6.1.2.1.15.6.1.1";
            type inet:ipv4-address;
            description
              "The IP address of the peer where the path
information was learned.";
          }

          leaf bgp4PathAttrIpAddrPrefixLen {
            smiv2:max-access "read-only";
            smiv2:oid "1.3.6.1.2.1.15.6.1.2";
            type int32 {
              range "0..32";
            }
            description
              "Length in bits of the IP address prefix
in the Network Layer Reachability
Information field.";
          }

          leaf bgp4PathAttrIpAddrPrefix {
            smiv2:max-access "read-only";
            smiv2:oid "1.3.6.1.2.1.15.6.1.3";
            type inet:ipv4-address;
            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.";
          }

          leaf bgp4PathAttrOrigin {
            smiv2:max-access "read-only";
            smiv2:oid "1.3.6.1.2.1.15.6.1.4";
            type enumeration {
              enum "igp" {
                value 1;
              }
              enum "egp" {
                value 2;
              }
              enum "incomplete" {
                value 3;
              }
            }
            description
              "The ultimate origin of the path
information.";
          }

          leaf bgp4PathAttrASPathSegment {
            smiv2:max-access "read-only";
            smiv2:oid "1.3.6.1.2.1.15.6.1.5";
            type binary {
              length "2..255";
            }
            description
              "The sequence of AS path segments.  Each AS
path segment is represented by a triple
<type, length, value>.

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;";
          }

          leaf bgp4PathAttrNextHop {
            smiv2:max-access "read-only";
            smiv2:oid "1.3.6.1.2.1.15.6.1.6";
            type inet:ipv4-address;
            description
              "The address of the border router that
should be used for the destination
network.";
          }

          leaf bgp4PathAttrMultiExitDisc {
            smiv2:max-access "read-only";
            smiv2:oid "1.3.6.1.2.1.15.6.1.7";
            type int32 {
              range "-1..2147483647";
            }
            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.";
          }

          leaf bgp4PathAttrLocalPref {
            smiv2:max-access "read-only";
            smiv2:oid "1.3.6.1.2.1.15.6.1.8";
            type int32 {
              range "-1..2147483647";
            }
            description
              "The originating BGP4 speaker's degree of
preference for an advertised route.  A
value of -1 indicates the absence of this
attribute.";
          }

          leaf bgp4PathAttrAtomicAggregate {
            smiv2:max-access "read-only";
            smiv2:oid "1.3.6.1.2.1.15.6.1.9";
            type enumeration {
              enum
                "lessSpecificRrouteNotSelected" {
                value 1;
              }
              enum
                "lessSpecificRouteSelected" {
                value 2;
              }
            }
            description
              "Whether or not the local system has
selected a less specific route without
selecting a more specific route.";
          }

          leaf bgp4PathAttrAggregatorAS {
            smiv2:max-access "read-only";
            smiv2:oid "1.3.6.1.2.1.15.6.1.10";
            type int32 {
              range "0..65535";
            }
            description
              "The AS number of the last BGP4 speaker that
performed route aggregation.  A value of
zero (0) indicates the absence of this
attribute.";
          }

          leaf bgp4PathAttrAggregatorAddr {
            smiv2:max-access "read-only";
            smiv2:oid "1.3.6.1.2.1.15.6.1.11";
            type inet:ipv4-address;
            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.";
          }

          leaf bgp4PathAttrCalcLocalPref {
            smiv2:max-access "read-only";
            smiv2:oid "1.3.6.1.2.1.15.6.1.12";
            type int32 {
              range "-1..2147483647";
            }
            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.";
          }

          leaf bgp4PathAttrBest {
            smiv2:max-access "read-only";
            smiv2:oid "1.3.6.1.2.1.15.6.1.13";
            type enumeration {
              enum "false" {
                value 1;
              }
              enum "true" {
                value 2;
              }
            }
            description
              "An indication of whether or not this route
was chosen as the best BGP4 route.";
          }

          leaf bgp4PathAttrUnknown {
            smiv2:max-access "read-only";
            smiv2:oid "1.3.6.1.2.1.15.6.1.14";
            type binary {
              length "0..255";
            }
            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.";
          }
        }  // list bgp4PathAttrEntry
      }  // container bgp4PathAttrTable
    }  // container BGP4-MIB

    notification bgpEstablished {
      smiv2:oid "1.3.6.1.2.1.15.7.1";
      description
        "The BGP Established event is generated when
the BGP FSM enters the ESTABLISHED state.";
      container object-1 {
        leaf bgpPeerRemoteAddr {
          type leafref {
            path "/BGP4-MIB:BGP4-MIB/BGP4-MIB:bgpPeerTable/BGP4-MIB:bgpPeerEntry/BGP4-MIB:bgpPeerRemoteAddr";
          }
        }

        leaf bgpPeerLastError {
          type leafref {
            path "/BGP4-MIB:BGP4-MIB/BGP4-MIB:bgpPeerTable/BGP4-MIB:bgpPeerEntry/BGP4-MIB:bgpPeerLastError";
          }
        }
      }  // container object-1

      container object-2 {
        leaf bgpPeerRemoteAddr {
          type leafref {
            path "/BGP4-MIB:BGP4-MIB/BGP4-MIB:bgpPeerTable/BGP4-MIB:bgpPeerEntry/BGP4-MIB:bgpPeerRemoteAddr";
          }
        }

        leaf bgpPeerState {
          type leafref {
            path "/BGP4-MIB:BGP4-MIB/BGP4-MIB:bgpPeerTable/BGP4-MIB:bgpPeerEntry/BGP4-MIB:bgpPeerState";
          }
        }
      }  // container object-2
    }  // notification bgpEstablished

    notification bgpBackwardTransition {
      smiv2:oid "1.3.6.1.2.1.15.7.2";
      description
        "The BGPBackwardTransition Event is generated
when the BGP FSM moves from a higher numbered
state to a lower numbered state.";
      container object-1 {
        leaf bgpPeerRemoteAddr {
          type leafref {
            path "/BGP4-MIB:BGP4-MIB/BGP4-MIB:bgpPeerTable/BGP4-MIB:bgpPeerEntry/BGP4-MIB:bgpPeerRemoteAddr";
          }
        }

        leaf bgpPeerLastError {
          type leafref {
            path "/BGP4-MIB:BGP4-MIB/BGP4-MIB:bgpPeerTable/BGP4-MIB:bgpPeerEntry/BGP4-MIB:bgpPeerLastError";
          }
        }
      }  // container object-1

      container object-2 {
        leaf bgpPeerRemoteAddr {
          type leafref {
            path "/BGP4-MIB:BGP4-MIB/BGP4-MIB:bgpPeerTable/BGP4-MIB:bgpPeerEntry/BGP4-MIB:bgpPeerRemoteAddr";
          }
        }

        leaf bgpPeerState {
          type leafref {
            path "/BGP4-MIB:BGP4-MIB/BGP4-MIB:bgpPeerTable/BGP4-MIB:bgpPeerEntry/BGP4-MIB:bgpPeerState";
          }
        }
      }  // container object-2
    }  // notification bgpBackwardTransition
  }  // module BGP4-MIB