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BGP and BGP4+ Introduction
Software Reference Supplement for SwitchBlade® x8112, x908, x900 and x610 Series Switches
1.16 AlliedWare Plus
TM
Operating System - Software Version 5.4.3-2.6 C613-50032-01 REV D
BGP and BGP4+ Peer Groups
Often, in a BGP speaker, many neighbors are configured with the same update policies.
Neighbors with the same update policies can be grouped into peer groups to simplify
configuration and, more importantly, to make updating more efficient.
Three steps to configure a BGP peer group, described in following sections, are as below:
1. How to create a Peer Group for BGP
2. How to assign options to the created Peer Group
3. How to make neighbors members of a Peer Group
You can disable a BGP peer or peer group without removing all the configuration
information using the neighbor shutdown (BGP and BGP4+) Router Configuration
mode command.
Note the steps differ slightly for BGP4+ peer groups. First you create a peer group in Global
Configuration mode. Next you activate the peer group in Address Family Configuration
mode, not Router Configuration mode. Then you assign options to the created peer group
in Address Family Configuration mode, not Router Configuration mode as used for BGP.
How to create a Peer Group for BGP
To create a BGP peer group, use the following command in Router Configuration mode:
How to assign options to the created Peer Group
After you create a peer group, you configure the peer group with neighbor commands. By
default, members of the peer group inherit all the configuration options of the peer
group. Members can also be configured to override the options that do not affect
outbound updates.
Peer group members will always inherit the following attributes: minimum-
advertisement-interval, next-hop-self, out-route-map, out-filter-list, out-dist-list, remote-
as (if configured), version, and update-source. All the peer group members will inherit
changes made to the peer group.
awplus(config-router)#
neighbor peer-group (create a
peer-group) (BGP and BGP4+)
This command creates a BGP peer group.