Administrator Guide

10.10.21.1 65123 0 0 0 0 0 never Active
10.10.32.3 65123 0 0 0 0 0 never Active
R2#show ip bgp summary
BGP router identifier 192.168.10.2, local AS number 48735.59224
BGP table version is 1, main routing table version 1
1 network entrie(s) using 132 bytes of memory
1 paths using 72 bytes of memory
BGP-RIB over all using 73 bytes of memory
1 BGP path attribute entrie(s) using 72 bytes of memory
1 BGP AS-PATH entrie(s) using 47 bytes of memory
5 neighbor(s) using 23520 bytes of memory
Neighbor AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/Pfx
10.10.21.1 65123 0 0 0 0 0 never Active
10.10.32.3 65123 0 0 0 0 0 never Active
For the router’s identier, the system uses the highest IP address of the Loopback interfaces congured. Because Loopback interfaces are
virtual, they cannot go down, thus preventing changes in the router ID. If you do not congure Loopback interfaces, the highest IP address
of any interface is used as the router ID.
To view the status of BGP neighbors, use the show ip bgp neighbors command in EXEC Privilege mode as shown in the rst
example. For BGP neighbor conguration information, use the show running-config bgp command in EXEC Privilege mode as
shown in the second example.
NOTE: The showconfig command in CONFIGURATION ROUTER BGP mode gives the same information as the show
running-config bgp command.
The following example displays two neighbors: one is an external internal BGP neighbor and the second one is an internal BGP neighbor.
The rst line of the output for each neighbor displays the AS number and states whether the link is an external or internal (shown in bold).
The third line of the show ip bgp neighbors output contains the BGP State. If anything other than ESTABLISHED is listed, the
neighbor is not exchanging information and routes. For more information about using the
show ip bgp neighbors command, refer to
the Dell Networking OS Command Line Interface Reference Guide.
Dell#show ip bgp neighbors
BGP neighbor is 10.114.8.60, remote AS 18508, external link
BGP version 4, remote router ID 10.20.20.20
BGP state ESTABLISHED, in this state for 00:01:58
Last read 00:00:14, hold time is 90, keepalive interval is 30 seconds
Received 18552 messages, 0 notifications, 0 in queue
Sent 11568 messages, 0 notifications, 0 in queue
Received 18549 updates, Sent 11562 updates
Minimum time between advertisement runs is 30 seconds
For address family: IPv4 Unicast
BGP table version 216613, neighbor version 201190
130195 accepted prefixes consume 520780 bytes
Prefix advertised 49304, rejected 0, withdrawn 36143
Connections established 1; dropped 0
Last reset never
Local host: 10.114.8.39, Local port: 1037
Foreign host: 10.114.8.60, Foreign port: 179
BGP neighbor is 10.1.1.1, remote AS 65535, internal link
Administratively shut down
BGP version 4, remote router ID 10.0.0.0
BGP state IDLE, in this state for 17:12:40
Last read 17:12:40, hold time is 180, keepalive interval is 60 seconds
Received 0 messages, 0 notifications, 0 in queue
Sent 0 messages, 0 notifications, 0 in queue
Received 0 updates, Sent 0 updates
Minimum time between advertisement runs is 5 seconds
184
Border Gateway Protocol IPv4 (BGPv4)