Users Guide

Version Description
9.8(0.0P2) Introduced on the S3048-ON.
9.7(0.0) Added the dmzlink-bw parameter.
9.2(1.0) Introduced on the Z9500.
9.0.2.0 Introduced on the S6000.
8.3.19.0 Introduced on the S4820T.
8.3.11.1 Introduced on the Z9000.
8.3.7.0 Introduced on the S4810.
7.8.1.0 Introduced on the S-Series.
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 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
if a neighbor’s conguration is more specic than its peer group’s conguration, the neighbor may retain its
conguration after it is added to the peer group. The neighbor’s conguration does not aect outgoing
updates.
A peer group must exist (be enabled) before you add a peer to it. If the peer group is disabled (shutdown),
the peers within that group are also disabled (shutdown).
In BGP, you cannot associate a peer to a peer-group without conguring the remote-as for Internal BGP
(IBGP) or External BGP (EBGP).
This command automatically restarts the neighbor session for the conguration to take eect.
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.
Border Gateway Protocol
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