Display BGP4 Neighbor Statistics

Various show ip bgp neighbor commands verify information about BGP4 neighbor configurations.

About this task

Use one or more of the following commands to verify BGP4 neighbor information. The commands do not have to be entered in this order.

Procedure

  1. Enter the show ip bgp neighbors command. 
    device# show ip bgp neighbors

   Total number of BGP Neighbors: 2
1   IP Address: 123.123.123.3, AS: 333 (EBGP), RouterID: 9.9.9.9, VRF: default-vrf
    State: ESTABLISHED, Time: 0h1m32s, KeepAliveTime: 60, HoldTime: 180
       KeepAliveTimer Expire in 17 seconds, HoldTimer Expire in 147 seconds
    Minimal Route Advertisement Interval: 0 seconds
       RefreshCapability: Received
    Messages:    Open    Update  KeepAlive Notification Refresh-Req
       Sent    : 2       15      3339      1            0          
       Received: 2       0       3356      0            0          
    Last Update Time: NLRI              Withdraw                NLRI                Withdraw
                  Tx: 0h1m32s           ---                 Rx: ---                 ---        
    Last Connection Reset Reason:User Reset Peer Session
    Notification Sent:     Cease/Administrative Reset
    Notification Received: Unspecified
    Neighbor NLRI Negotiation:
      Peer configured for IPV4 unicast  Routes
    Neighbor ipv6 MPLS Label Capability Negotiation:
    Neighbor AS4 Capability Negotiation:
    Outbound Policy Group:
       ID: 2, Use Count: 2
    BFD:Disabled
       Byte Sent:   146, Received: 0
       Local host:  123.123.123.2, Local  Port: 44575
       Remote host: 123.123.123.3, Remote Port: 179

2   IP Address: 160.160.160.10, AS: 111 (EBGP), RouterID: 193.24.0.1, VRF: default-vrf
    State: ESTABLISHED, Time: 0h1m33s, KeepAliveTime: 30, HoldTime: 90
       KeepAliveTimer Expire in 12 seconds, HoldTimer Expire in 86 seconds
    Minimal Route Advertisement Interval: 0 seconds
       RefreshCapability: Received
    Messages:    Open    Update  KeepAlive Notification Refresh-Req
       Sent    : 8       0       553       5            0          
       Received: 8       9       498       0            0          
    Last Update Time: NLRI              Withdraw                NLRI                Withdraw
                  Tx: ---               ---                 Rx: 0h1m33s             ---        
    Last Connection Reset Reason:User Reset Peer Session
    Notification Sent:     Cease/Administrative Reset
    Notification Received: Unspecified
    Neighbor NLRI Negotiation:
      Peer configured for IPV4 unicast  Routes
    Neighbor ipv6 MPLS Label Capability Negotiation:
    Neighbor AS4 Capability Negotiation:
    Outbound Policy Group:
       ID: 2, Use Count: 2
    BFD:Disabled
       Byte Sent:   121, Received: 0
       Local host:  160.160.160.20, Local  Port: 53791
       Remote host: 160.160.160.10, Remote Port: 179
    This example output gives general information about BGP4 neighbors.
  2. Enter the show ip bgp neighbors advertised-routes command. 
    device# show ip bgp neighbors 123.123.123.3 advertised-routes 

       There are 5 routes advertised to neighbor 123.123.123.3
Status A:AGGREGATE B:BEST b:NOT-INSTALLED-BEST E:EBGP I:IBGP L:LOCAL
       Prefix             Next Hop        MED        LocPrf     Weight Status
1      110.110.110.0/24   123.123.123.2    0                    0      BE    
         AS_PATH: 222 111
2      110.110.111.0/24   123.123.123.2    0                    0      BE    
         AS_PATH: 222 111
3      110.110.112.0/24   123.123.123.2    0                    0      BE    
         AS_PATH: 222 111
4      110.110.113.0/24   123.123.123.2    0                    0      BE    
         AS_PATH: 222 111
5      110.110.114.0/24   123.123.123.2    0                    0      BE    
         AS_PATH: 222 111
    This example shows information about all the routes the BGP4 networking device advertised to the neighbor.
  3. Enter the show ip bgp neighbors last-packet-with-error command. 
    device# show ip bgp neighbors 123.123.123.3 last-packet-with-error 

 Received Message Length: 45
 BGP Message:
  0xffffffff  0xffffffff  0xffffffff  0xffffffff  0x002d0104
  0x014b00b4  0x09090909  0x10020601  0x04010000  0x01020202
  0x00020280  0x00

 BGP Header
  Marker:   0xffffffff  0xffffffff  0xffffffff  0xffffffff
  Message Length: (0x002d) 45
  Message Type: (0x01) OPEN

 OPEN Message 
 Version: (0x04) 4
 AS Number: (0x014b) 331 
 Hold Time: (0x00b4) 180
 BGP Identifier: (0x09090909) 9.9.9.9 
 Optional Parameter length: (0x10) 16

 OPEN message optional parameters
  Parameter Type: (0x02) Capability
  Parameter Length: (0x06) 6
   Capability Type: (0x01) MULTIPROTOCOL EXTENSIONS
   Capability Length: (0x04) 4
   AFI: (0x0100) Unknown(256)
   Reserved: (0x00) 0
   SAFI: (0x01) Unicast

  Parameter Type: (0x02) Capability
  Parameter Length: (0x02) 2
   Capability Type: (0x02) ROUTE REFRESH(new)
   Capability Length: (0x00) 0

  Parameter Type: (0x02) Capability
  Parameter Length: (0x02) 2
   Capability Type: (0x80) ROUTE REFRESH(old)
   Capability Length: (0x00) 0
    This example shows information about the last packet that contained an error from any of a device‘s neighbors.
  4. Enter the show ip bgp neighbors received-routes command. 
    device# show ip bgp neighbors 160.160.160.10 received-routes 

       There are 5 received routes from neighbor 160.160.160.10
Status A:AGGREGATE B:BEST b:NOT-INSTALLED-BEST C:CONFED_EBGP D:DAMPED
       E:EBGP H:HISTORY I:IBGP L:LOCAL M:MULTIPATH m:NOT-INSTALLED-MULTIPATH
       S:SUPPRESSED F:FILTERED s:STALE
       Prefix             Next Hop        MED        LocPrf     Weight Status
1      110.110.110.0/24   160.160.160.10   0         100        0      BE    
         AS_PATH: 111
2      110.110.111.0/24   160.160.160.10   0         100        0      BE    
         AS_PATH: 111
3      110.110.112.0/24   160.160.160.10   0         100        0      BE    
         AS_PATH: 111
4      110.110.113.0/24   160.160.160.10   0         100        0      BE    
         AS_PATH: 111
5      110.110.114.0/24   160.160.160.10   0         100        0      BE    
         AS_PATH: 111
    This example lists all route information received in route updates from BGP4 neighbors of the device since the soft-reconfiguration feature was enabled.
  5. Enter the show ip bgp neighbors rib-out-routes command. 
    device# show ip bgp neighbors 123.123.123.3 rib-out-routes 

       There are 5 RIB_out routes for neighbor 123.123.123.3
Status A:AGGREGATE B:BEST b:NOT-INSTALLED-BEST E:EBGP I:IBGP L:LOCAL
       Prefix             Next Hop        MED        LocPrf     Weight Status
1      110.110.110.0/24   160.160.160.10   0         100        0      BE    
         AS_PATH: 111
2      110.110.111.0/24   160.160.160.10   0         100        0      BE    
         AS_PATH: 111
3      110.110.112.0/24   160.160.160.10   0         100        0      BE    
         AS_PATH: 111
4      110.110.113.0/24   160.160.160.10   0         100        0      BE    
         AS_PATH: 111
5      110.110.114.0/24   160.160.160.10   0         100        0      BE    
         AS_PATH: 111
    This example shows information about BGP4 outbound RIB routes.
9036959-00 Rev AA