Command Line Reference Guide

Version
8.3.19.0
Introduced on the S4820T.
Version 8.3.11.1 Introduced on the Z9000.
Version 8.3.7.0 Introduced on the S4810.
Version 7.8.1.0 Introduced on the S-Series.
Version 7.7.1.0 Introduced on the C-Series.
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 configured
parameters. A peer cannot become part of a peer group if any of the following
commands are configured on the peer:
• neighbor advertisement-interval
• neighbor distribute-list
• neighbor route-map
• neighbor route-reflector-client
A neighbor may keep its configuration after it was added to a peer group if the
neighbor’s configuration is more specific than the peer group’s, and the neighbor’s
configuration does not affect 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).
In BGP, you cannot associate a peer to a peer-group without configuring the
remote-as for Internal BGP (IBGP) or External BGP (EBGP).
This command automatically restarts the neighbor session for the configuration to
take effect.
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 configurations.
neighbor peer-group (creating group)
Allows you to create a peer group and assign it a name.
S6000
Syntax
neighbor peer-group-name peer-group
To delete a peer group, use the no neighbor peer-group-name peer-group
command.
376
Border Gateway Protocol