White Papers

The Lines
Beginning
with:
Description
Sent messages The line displays the number of BGP messages sent, the number of notifications
(error messages), and the number of messages waiting in a queue for processing.
Received updates This line displays the number of BGP updates received and sent.
Soft
reconfiguration
This line indicates that soft reconfiguration inbound is configured.
Minimum time Displays the minimum time, in seconds, between advertisements.
(list of inbound
and outbound
policies)
Displays the policy commands configured and the names of the Route map, AS-
PATH ACL, or Prefix list configured for the policy.
For address
family:
Displays the IPv4 Unicast as the address family.
BGP table
version
Displays which version of the primary BGP routing table the router and the
neighbor are using.
accepted
prefixes
Displays the number of network prefixes the router accepts and the amount of
memory used to process those prefixes.
Prefix advertised Displays the number of network prefixes advertised, the number rejected, and the
number withdrawn from the BGP routing table.
Connections
established
Displays the number of TCP connections established and dropped between the two
peers to exchange BGP information.
Last reset Displays the amount of time since the peering session was last reset. Also states
if the peer resets the peering session. If the peering session was never reset, the
word never is displayed.
Local host: Displays the peering address of the local router and the TCP port number.
Foreign host: Displays the peering address of the neighbor and the TCP port number.
Example ( )
Dell#show ip bgp neighbors
BGP neighbor is 10.10.10.1, remote AS 23456, external link
BGP version 4, remote router ID 10.10.10.1
BGP state ESTABLISHED, in this state for 00:00:35
. . .
Capabilities received from neighbor for IPv4 Unicast :
MULTIPROTO_EXT(1)
ROUTE_REFRESH(2)
4_OCTECT_AS(65)
ADD_PATH (69)
CISCO_ROUTE_REFRESH(128)
Example
Dell#show ip bgp neighbors
BGP neighbor is 100.10.10.2, remote AS 200, external link
BGP version 4, remote router ID 192.168.2.101
BGP state ESTABLISHED, in this state for 00:16:12
Last read 00:00:12, last write 00:00:03
Hold time is 180, keepalive interval is 60 seconds
Received 1404 messages, 0 in queue
3 opens, 1 notifications, 1394 updates
6 keepalives, 0 route refresh requests
Sent 48 messages, 0 in queue
3 opens, 2 notifications, 0 updates
43 keepalives, 0 route refresh requests
Minimum time between advertisement runs is 30 seconds
Minimum time before advertisements start is 0 seconds
Capabilities received from neighbor for IPv4 Unicast :
318 Border Gateway Protocol IPv4 (BGPv4)