R1: show ip bgp summary
The following example shows the output of the show ip bgp summary command for router R1 at this stage of the configuration.
vyatta@R1:~$ show ip bgp summary BGP router identifier 10.0.0.11, local AS number 100 RIB entries 1, using 64 bytes of memory Peers 3, using 7560 bytes of memory Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/PfxRcd 10.0.0.22 4 100 6 10 0 0 0 00:04:18 0 10.0.0.33 4 100 6 10 0 0 0 00:04:14 0 10.0.0.44 4 100 5 6 0 0 0 00:02:55 0 Total number of neighbors 3 vyatta@R1:~$
The most important fields in the output for show ip bgp summary are the
State fields. All the iBGP peers for R1 show times in the
Up/Down field, which means the connection has been “established” for that period of time. The established state indicates that the peers have successfully created a BGP connection between one another, and are now able to send and receive BGP update messages.
If a peer shows in either Active or Idle in the
State field, it means there is some issue that is keeping the BGP peers from forming an adjacency.
- The Active state identifies that the local router is actively trying to establish a TCP connection to the remote peer. You may see this if the local peer has been configured, but the remote peer is unreachable or has not been configured.
- The Idle state indicates that the local router has not allocated any resources for that peer connection, so any incoming connection requests be refused.