ECS4660-28F_Management Guide-R03

C HAPTER 51 | IP Routing Commands
Border Gateway Protocol (BGPv4)
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EXAMPLE
In the following example, “From” indicates the peer that advertised this
path, while “Reuse” is the time after which the path will be made available.
Console#show ip bgp dampening dampened-paths
BGP table version is 0, local router ID is 192.168.0.2
Status codes: s suppressed, d damped, h history, * valid, > best, i internal,
r RIB-failure, S Stale, R Removed
Origin codes: i - IGP, e - EGP, ? - incomplete
Network From Reuse Path
*d 100.1.3.0/24 10.1.1.64 00:27:40 100 ?
Total number of prefixes 1
Console#
In this example, “Duration” indicates the time since the first flap occurred.
Console#show ip bgp dampening flap-statistics
BGP table version is 0, local router ID is 192.168.0.2
Status codes: s suppressed, d damped, h history, * valid, > best, i internal,
r RIB-failure, S Stale, R Removed
Origin codes: i - IGP, e - EGP, ? - incomplete
Network From Flaps Duration Reuse Path
*d 100.1.3.0/24 10.1.1.64 3 00:06:05 00:27:00 100 ?
Total number of prefixes 1
Console#
This example shows the dampening parameters configured on this router.
Console#show ip bgp dampening parameters
Dampening 15 750 2000 60
Reachability half-life time :15 min
Reuse penalty :750
Suppress penalty :2000
Max suppress time :60 min
Console#
Table 273: show ip bgp dampening parameters- display description
Field Description
Reachability
half-life time
The time after which a penalty is reduced. The penalty value is reduced to
half of the previous value after the half-life time expires.
Reuse penalty The point to which the penalty for a flapping route must fall before a route
is unsuppressed.
Suppress
penalty
The point at which to start suppressing a route.
Max suppress
time
The maximum time a route can be suppressed.