API Guide

Supported
Releases
10.2.0E or later
cluster-id
Assigns a cluster ID to a BGP cluster with multiple route reflectors.
Syntax
cluster-id {number | ip-address}
Parameters
● number—Enter a route reflector cluster ID as a 32-bit number, from 1 to 4294967295.
● ip-address—Enter an IP address as the route-reflector cluster ID.
Default Router ID
Command Mode ROUTER-BGP
Usage
Information
If a cluster contains only one route reflector, the cluster ID is the route reflector’s router ID. For
redundancy, a BGP cluster may contain two or more route reflectors. Without a cluster ID, the route
reflector cannot recognize route updates from the other route reflectors within the cluster. The default
format to display the cluster ID is A.B.C.D format. If you enter the cluster ID as an integer, an integer
displays. The no version of this command resets the value to the default.
NOTE: To configure these settings for a nondefault VRF instance, you must first enter the ROUTER-
CONFIG-VRF sub mode using the following commands:
1. Enter the ROUTER BGP mode using the router bgp as-number command.
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
Layer 3 625