TNSR supports several commands to display information about the BGP daemon configuration and its status.
To view the BGP configuration:
tnsr# show route dynamic bgp config [<as-number>]
To view the routing daemon manager (Zebra) configuration:
tnsr# show route dynamic manager
To view other individual sections of the configuration:
tnsr# show route dynamic access-list [<access-list-name>] tnsr# show route dynamic bgp as-path [<as-path-name>] tnsr# show route dynamic bgp community-list [<community-list-name>] tnsr# show route dynamic prefix-list [<prefix-list-name>] tnsr# show route dynamic route-map [<route-map-name>]
For a brief summary of BGP status information:
tnsr# show route dynamic bgp summary
For lists configured BGP Neighbors and their status details:
tnsr# show route dynamic bgp neighbors [[<peer>] [advertised-routes|dampened-routes| flap-statistics|prefix-counts|received|received-routes|routes]]
For information about a specific BGP peer group:
tnsr# show route dynamic bgp peer-group <peer-group-name>
For a list of valid BGP next hops:
tnsr# show route dynamic bgp nexthop [detail]
For details about an address or prefix in the BGP routing table:
tnsr# show route dynamic bgp network <IP Address|Prefix>
BGP Active Session Control¶
clear command can be used to reset active BGP sessions. This command
is available from within
config-route-dynamic-bgp mode. The general form of
the command is:
tnsr(config)# route dynamic bgp tnsr(config-route-dynamic-bgp)# clear (*|<peer>|<asn>) [soft]
The first parameter controls what will be cleared, and values may be completed
Clears all open BGP sessions
Clears all sessions to a specific peer IP address or peer group name
Clears all sessions to a specific AS number
The second parameter,
soft is optional and controls whether or not the
command will trigger a soft reconfiguration.
Additional BGP status information can be obtained by using the
outside of TNSR.
The vtysh program must be run as root:
vtysh interface offers numerous commands. Of particular interest for BGP
status are the following:
- show bgp summary
A brief summary of BGP status information.
- show bgp neighbors
Lists configured BGP Neighbors and their status details.
- show ip bgp
A list of routes and paths for networks involved in BGP.
- show ip route
The IP routing table managed by the FRR Zebra daemon, which marks the origin of routes to see which entries were obtained via BGP.