Command Reference Guide

3Com Router 5000 Family and Router 6000 Family group ● 147
Command Reference
group
Purpose Use the group command to create a peer group.
Use the undo group command to delete the configured peer group.
Syntax group group-name { [ internal ] | external }
undo group group-name
Parameters group-name
Specifies the name of the peer group. It can be an
alphanumeric string with the length ranging from 1 to
47.
internal
Creates an internal peer group.
external
Creates an external peer group including other sub
ASs in the confederation.
Default By default, an IBGP peer is added to the default peer group and needs no
configuration, and the route update policy configured for any IBGP peer is valid for
the other IBGP peers in the group. To be specific, if the router is not a route reflector,
all the IBGP peers are in the same group. If the router is a route reflector, all the route
reflection clients are in a group, while non-clients are in another group.
Example Establish a peer group "test".
[3Com -bgp] group test
View This command can be used in the following views:
■ BGP view
Description The use of BGP peer group is for ease of configuration. When you are starting several
peers with the same configuration, you can establish and configure a peer group at
first, and then add all the peers to the peer group so that they have the same
configuration as the peer group.
The external peer group members must be in the same network segment. Otherwise,
some EBGP peers may discard the transmitted route update.
The peer group members cannot be configured with a route update policy different
from that of the peer group, but can be configured with different ingress policies.