Concept Guide

Command Modes ROUTER BGP
Supported Modes Full–Switch
Command History
Version Description
9.9(0.0) Introduced on the FN IOM.
9.2(0.0) Introduced on the MXL 10/40GbE Switch IO Module.
Usage Information
You can assign up to 256 peers to one peer group.
When you add a peer to a peer group, it inherits all the peer group’s congured parameters. A peer cannot become
part of a peer group if any of the following commands are congured on the peer:
• neighbor advertisement-interval
• neighbor distribute-list
• neighbor route-map
• neighbor route-reector-client
• neighbor shutdown
A neighbor may keep its conguration after it was added to a peer group if the neighbor’s conguration is more
specic than the peer group’s, and the neighbor’s conguration does not aect outgoing updates.
A peer group must exist before you add a peer to it. If the peer group is disabled (shutdown) the peers within the
group are also disabled (shutdown).
Related Commands
clear ip bgp — resets BGP sessions.
neighbor peer-group (creating group) — creates a peer group.
show ip bgp peer-group — views BGP peers.
show ip bgp neighbors — views BGP neighbors congurations.
neighbor peer-group (creating group)
Allows you to create a peer group and assign it a name.
Syntax
neighbor peer-group-name peer-group
To delete a peer group, use the no neighbor peer-group-name peer-group command.
Parameters
peer-group-name Enter a text string up to 16 characters long as the name of the peer group.
Defaults Not congured.
Command Modes ROUTER BGP
Supported Modes Full–Switch
Command History
Version Description
9.9(0.0) Introduced on the FN IOM.
324 Border Gateway Protocol IPv4 (BGPv4)