Users Guide

2. From the ROUTER BGP mode, enter the ROUTER BGP VRF mode using the vrf vrf-name
command.
Example
OS10(conf-router-bgp-10)# cluster-id 3.3.3.3
Supported
Releases
10.3.0E or later
bgp dampening
Enables BGP route-flap dampening and configures the dampening parameters.
Syntax
bgp dampening [half-life | reuse-limit | suppress-limit | max-suppress-time
| route-map-name]
Parameters
● half-life — (Optional) Enter the half-life time, in minutes, after which the penalty decreases.
After the router assigns a penalty of 1024 to a route, the penalty decreases by half after the half-life
period expires, from 1 to 45.
● reuse-limit — (Optional) Enter a reuse-limit value, which compares to the flapping route’s
penalty value. If the penalty value is less than the reuse value, the flapping route advertises again and
is not suppressed, from 1 to 20000.
● suppress-limit — (Optional) Enter a suppress-limit value, which compares to the flapping route’s
penalty value. If the penalty value is greater than the suppress value, the flapping route is no longer
advertised, from 1 to 20000.
● max-suppress-time — (Optional) Enter the maximum number of minutes a route is suppressed,
from 1 to 255.
● route-map-name — (Optional) Enter the name of the route-map.
Defaults half-life 15; reuse-limit 750; suppress-limit 2000; max-suppress-time 60
Command Mode ROUTER-BGP-AF
Usage
Information
To reduce the instability of the BGP process, setup route flap dampening parameters. After setting up the
dampening parameters, clear information about route dampening and return the suppressed routes to the
Active state. You can also view statistics on route flapping or change the path selection from Default
Deterministic mode to Non-Deterministic mode. The no version of this command resets the value to the
default.
Example
OS10(conf-router-bgpv4-af)# dampening 2 751 2001 51 map1
Supported
Releases
10.3.0E or later
debug ip bgp
Enables Border Gateway Protocol (BGP) debugging and displays messages related to processing of BGP.
Syntax
debug ip bgp
Parameters None
Defaults None
Command Modes EXEC
Usage
Information
The debug ip bgp command does not display the logs on the console. they are saved in the journal log.
The no debug ip bgp command stops displaying messages related to processing of BGP.
Example
OS10# debug ip bgp
Layer 3 669