Information Technology Reference
In-Depth Information
Example 4-22 shows the output of
debug ip bgp update
on R1 when 10.0.0.0/16 is
down. Example 4-23 shows a similar output when 10.0.0.0/16 is up again.
Example 4-22
Output of
debug ip bgp update
on R1 When 10.0.0.0 Is Down
*Jul 29 21:37:39.411: BGP(0): route 10.0.0.0/16 down
*Jul 29 21:37:39.411: BGP(0): no valid path for 10.0.0.0/16
*Jul 29 21:37:39.411: BGP(0): nettable_walker 10.0.0.0/16 no best path
*Jul 29 21:37:39.411: BGP(0): 192.168.13.3 computing updates, afi 0, neighbor
version 4, table version 5, starting at 0.0.0.0
*Jul 29 21:37:39.411: BGP(0): 192.168.13.3 update run completed, afi 0, ran for
0ms, neighbor version 4, start version 5, throttled to 5
*Jul 29 21:38:20.331: BPG(0): Condition Prefix10 changes to Withdraw
*Jul 29 21:38:20.331: BGP(0): net 172.16.0.0/16 matches ADV MAP AS300-out: bump
version to 6
*Jul 29 21:38:20.379: BGP(0): nettable_walker 172.16.0.0/16 route sourced locally
*Jul 29 21:38:20.379: BGP(0): 192.168.13.3 computing updates, afi 0, neighbor
version 5, table version 6, starting at 0.0.0.0
*Jul 29 21:38:20.379: BGP(0): 192.168.13.3 172.16.0.0/16 matches advertise map
AS300-out, state: Withdraw
*Jul 29 21:38:20.379: BGP(0): 192.168.13.3 send unreachable 172.16.0.0/16
*Jul 29 21:38:20.379: BGP(0): 192.168.13.3 send UPDATE 172.16.0.0/16 --
unreachable
*Jul 29 21:38:20.379: BGP(0): 192.168.13.3 1 updates enqueued (average=26,
maximum=26)
*Jul 29 21:38:20.379: BGP(0): 192.168.13.3 update run completed, afi 0, ran for
0ms, neighbor version 5, start version 6, throttled to 6
Example 4-23
Output of
debug ip bgp update
on R1 When 10.0.0.0 Is Up
*Jul 29 21:40:10.679: BGP(0): route 10.0.0.0/16 up
*Jul 29 21:40:10.679: BGP(0): nettable_walker 10.0.0.0/16 route sourced locally
*Jul 29 21:40:10.679: BGP(0): 192.168.13.3 computing updates, afi 0, neighbor
version 6, table version 7, starting at 0.0.0.0
*Jul 29 21:40:10.679: BGP(0): 192.168.13.3 update run completed, afi 0, ran for
0ms, neighbor version 6, start version 7, throttled to 7
*Jul 29 21:40:20.539: BPG(0): Condition Prefix10 changes to Advertise
*Jul 29 21:40:20.539: BGP(0): net 172.16.0.0/16 matches ADV MAP AS300-out: bump
version to 8
*Jul 29 21:40:21.119: BGP(0): nettable_walker 172.16.0.0/16 route sourced locally
*Jul 29 21:40:37.639: BGP(0): 192.168.13.3 computing updates, afi 0, neighbor
version 7, table version 8, starting at 0.0.0.0
*Jul 29 21:40:37.639: BGP(0): 192.168.13.3 172.16.0.0/16 matches advertise map
AS300-out, state: Advertise
*Jul 29 21:40:37.639: BGP(0): 192.168.13.3 send UPDATE (format) 172.16.0.0/16,
next 192.168.13.1, metric 20, path
*Jul 29 21:40:37.639: BGP(0): 192.168.13.3 1 updates enqueued (average=51,
maximum=51)
*Jul 29 21:40:37.639: BGP(0): 192.168.13.3 update run completed, afi 0, ran for
0ms, neighbor version 7, start version 8, throttled to 8
