Users Guide

The Lines
Beginning with:
Description
• last read is the time (hours:minutes:seconds) the router read a message from
its neighbor
• hold time is the number of seconds congured between messages from its
neighbor
• keepalive interval is the number of seconds between keepalive messages to
help ensure that the TCP session is still alive.
Received messages This line displays the number of BGP messages received, the number of
notications (error messages), and the number of messages waiting in a queue for
processing.
Sent messages The line displays the number of BGP messages sent, the number of notications
(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 reconguration This line indicates that soft reconguration inbound is congured.
Minimum time Displays the minimum time, in seconds, between advertisements.
(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number withdrawn from the BGP routing table.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
Border Gateway Protocol
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