Dell C1048P Port Extender Networking Configuration Guide for the C9000 Series - Page 198

To view the BGP configuration, enter show config in CONFIGURATION ROUTER BGP mode. To view the BGP status, use the show ip bgp summary command in EXEC Privilege mode. The first example shows the summary with a 2-byte AS number displayed (in bold); the second example shows that the summary with a 4-byte AS number using the show ip bgp summary command (displays a 4-byte AS number in bold). R2#show ip bgp summary BGP router identifier 192.168.10.2, local AS number 65123 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 100.10.92.9 65192 0 0 0 0 0 never Active 192.168.10.1 65123 0 0 0 0 0 never Active 192.168.12.2 65123 0 0 0 0 0 never Active R2# 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 100.10.92.9 65192 0 0 0 0 0 never Active 192.168.10.1 65123 0 0 0 0 0 never Active 192.168.12.2 65123 0 0 0 0 0 never Active R2# For the router's identifier, the system uses the highest IP address of the Loopback interfaces configured. Because Loopback interfaces are virtual, they cannot go down, thus preventing changes in the router ID. If you do not configure 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 first example. For BGP neighbor configuration information, use the show running-config bgp command in EXEC Privilege mode as shown in the second example. The following example displays two neighbors: one is an external internal BGP neighbor and the second one is an internal BGP neighbor. The first line of the output for each neighbor displays the AS number and states whether the link is an external or internal (shown in bold). 198 Border Gateway Protocol IPv4 (BGPv4)