Reference Guide

Configuring Peer Groups
To configure multiple BGP neighbors at one time, create and populate a BGP peer group.
An advantage of peer groups is that members of a peer group inherit the configuration properties of the
group and share same update policy.
A maximum of 256 peer groups are allowed on the system.
Create a peer group by assigning it a name, then adding members to the peer group. After you create a
peer group, you can configure route policies for it. For information about configuring route policies for a
peer group, refer to Filtering BGP Routes.
NOTE: Sample Configurations for enabling peer groups are found at the end of this chapter.
1. Create a peer group by assigning a name to it.
CONFIG-ROUTERBGP mode
neighbor peer-group-name peer-group
2. Enable the peer group.
CONFIG-ROUTERBGP mode
neighbor peer-group-name no shutdown
By default, all peer groups are disabled.
3. Create a BGP neighbor.
CONFIG-ROUTERBGP mode
neighbor ip-address remote-as as-number
4. Enable the neighbor.
CONFIG-ROUTERBGP mode
neighbor ip-address no shutdown
5. Add an enabled neighbor to the peer group.
CONFIG-ROUTERBGP mode
neighbor ip-address peer-group peer-group-name
Border Gateway Protocol IPv4 (BGPv4)
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