Users Guide

The Lines
Beginning with:
Description
(list of inbound and
outbound policies)
Displays the policy commands congured and the names of the Route map, AS-PATH
ACL, or Prex list congured 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 prexes Displays the number of network prexes the router accepts and the amount of memory
used to process those prexes.
Prex advertised Displays the number of network prexes 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withdrawn from the BGP routing table.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 172.16.0.2
BGP neighbor is 172.16.0.2, remote AS 200, external link
Member of peer-group port0 for session parameters
BGP remote router ID 172.16.0.2
BGP state ESTABLISHED, in this state for 00:13:55
Last read 00:00:03, Last write 00:00:55
Hold time is 180, keepalive interval is 60 seconds
Received 50 messages, 0 in queue
1 opens, 0 notifications, 34 updates
15 keepalives, 0 route refresh requests
Sent 18 messages, 0 in queue
1 opens, 0 notifications, 0 updates
16 keepalives, 0 route refresh requests
Route refresh request: received 0, sent messages 1
Minimum time between advertisement runs is 30 seconds
Minimum time before advertisements start is 0 seconds
Capabilities received from neighbor for IPv4 Unicast :
MULTIPROTO_EXT(1)
ROUTE_REFRESH(2)
Capabilities advertised to neighbor for IPv4 Unicast :
MULTIPROTO_EXT(1)
ROUTE_REFRESH(2)
ADD_PATH(69)
CISCO_ROUTE_REFRESH(128)
For address family: IPv4 Unicast
BGP local RIB : Routes to be Added 0, Replaced 0, Withdrawn 0
InQ : Added 0, Replaced 0, Withdrawn 0
OutQ : Added 0, Withdrawn 0
Allow local AS number 0 times in AS-PATH attribute
Prefixes accepted 2, withdrawn 15 by peer, martian prefixes ignored 0
412
Border Gateway Protocol