Cisco ASR 9000 Series Routing Configuration Guide

Logging Neighbor Changes
Logging neighbor changes is enabled by default. Use the log neighbor changes disable command to turn off
logging. The no log neighbor changes disable command can also be used to turn logging back on if it has
been disabled.
Adjusting BGP Timers
Perform this task to set the timers for BGP neighbors.
BGP uses certain timers to control periodic activities, such as the sending of keepalive messages and the
interval after which a neighbor is assumed to be down if no messages are received from the neighbor during
the interval. The values set using the timers bgp command in router configuration mode can be overridden
on particular neighbors using the timers command in the neighbor configuration mode.
SUMMARY STEPS
1.
configure
2.
router bgp as-number
3.
timers bgp keepalive hold-time
4.
neighbor ip-address
5.
timers keepalive hold-time
6.
commit
DETAILED STEPS
PurposeCommand or Action
configure
Step 1
Specifies the autonomous system number and enters the
BGP configuration mode, allowing you to configure the
BGP routing process.
router bgp as-number
Example:
RP/0/RSP0/CPU0:router(config)# router bgp 123
Step 2
Sets a default keepalive time and a default hold time for
all neighbors.
timers bgp keepalive hold-time
Example:
RP/0/RSP0/CPU0:router(config-bgp)# timers bgp
30 90
Step 3
Places the router in neighbor configuration mode for BGP
routing and configures the neighbor IP address as a BGP
peer.
neighbor ip-address
Example:
RP/0/RSP0/CPU0:router(config-bgp)# neighbor
172.168.40.24
Step 4
Cisco ASR 9000 Series Aggregation Services Router Routing Configuration Guide, Release 5.3.x
84
Implementing BGP
Logging Neighbor Changes

Cisco ASR 9000 Series Specifications

General

Brand	Cisco
Model	ASR 9000 Series
Category	Network Router
Language	English