Version
Description
8.3.19.0
Introduced on the S4820T.
8.3.11.1
Introduced on the Z9000.
8.3.7.0
Introduced on the S4810.
7.8.1.0
Introduced on the S-Series.
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BGP local RIB : Routes to be Added 0, Replaced 0, Withdrawn 0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#
Border Gateway Protocol
451