Service Manual

Version Description
7.7.1.0 Introduced on the C-Series.
Usage Information
To determine a BGP session flap, both a route-down event and a subsequent route-up
event corresponding to a single route are considered. As a result, a flap event is
penalized only one time during the route-down event. The subsequent route-up event
corresponding to the same route is not considered as a flap and is not penalized.
The history paths that the show ip bgp command displays contain only the prefix and
the next-hop information. The next-hop information shows the ip address of the
neighbor. It does not show the actual next-hop details.
The following describes the show ip bgp damp command shown in the following
example.
Field Description
Network Displays the network ID to which the route is dampened.
From Displays the IP address of the neighbor advertising the
dampened route.
Reuse Displays the hour:minutes:seconds until the dampened route is
available.
Path Lists all the ASs the dampened route passed through to reach
the destination network.
Example
Dell# show ip bgp dampened-paths
BGP local RIB : Routes to be Added 0, Replaced 0, Withdrawn 0
BGP local router ID is 192.168.11.5
Status codes: s suppressed, S stale, d dampened, h history, *
valid, > best
Path source: I - internal, a - aggregate, c - confed-external, r
- redistributed
n - network, D - denied, S - stale
Origin codes: i - IGP, e - EGP, ? - incomplete
Network From Reuse Path
d 55.0.0.0/24 172.16.0.2 00:36:23 200
Dell#
show ip bgp detail
Display BGP internal information for the IPv4 Unicast address family.
Syntax
show ip bgp [ipv4 unicast] detail
Defaults none
Border Gateway Protocol 531