Reference Guide

2. Enable IPv6 unicast support on a BGP neighbor/template in CONFIG-ROUTER-BGP-AF mode.
activate
Peer templates
To configure multiple BGP neighbors at one time, you can create and populate a BGP peer template. An advantage of
configuring peer templates is that members of a peer template inherit the configuration properties of the template and share
update policy. Always create a peer template and assign a name to it before adding members to the peer template. Create a
peer template before configuring any route policies for the template.
NOTE: An outbound filter policy, distribute list or route map, is not supported on a peer group member.
1. Enable BGP, and assign the AS number to the local BGP speaker in CONFIGURATION mode, from 1 to 65535 for 2 byte, 1 to
4294967295 | 0.1 to 65535.65535 for 4 byte, or 0.1 to 65535.65535 in dotted format.
router bgp as-number
2. Create a peer template by assigning a neighborhood name to it in ROUTER-BGP mode.
template template-name
3. Add a neighbor as a remote AS in ROUTER-TEMPLATE mode, from 1 to 65535 for 2 byte, 1 to 4294967295 | 0.1 to
65535.65535 for 4 byte, or 0.1 to 65535.65535 in dotted format.
neighbor ip-address
4. Add a remote neighbor, and enter the AS number in ROUTER-TEMPLATE mode.
remote-as as-number
● To add an EBGP neighbor, configure the as-number parameter with a number different from the BGP as-number
configured in the router bgp as-number command.
● To add an IBGP neighbor, configure the as-number parameter with the same BGP as-number configured in the
router bgp as-number command.
5. (Optional) Add a text description for the template in ROUTER-TEMPLATE mode.
description text
6. Assign a peer-template with a peer-group name from which to inherit to the neighbor in ROUTER-NEIGHBOR mode.
inherit template template-name
7. Enable the neighbor in ROUTER-BGP mode.
neighbor ip-address
8. Enable the peer-group in ROUTER-NEIGHBOR mode.
no shutdown
When you add a peer to a peer group, it inherits all the peer group configured parameters. When you disable a peer group, all the
peers within the peer template that are in the Established state move to the Idle state. A neighbor cannot become a part of a
peer group if it has any of these commands configured:
● advertisement-interval
● next-hop-self
● route-map out
● route-reflector-client
● send-community
A neighbor may keep its configuration after it is added to a peer group if the neighbor configuration is more specific than the
peer group and if the neighbor configuration does not affect outgoing updates.
To display the peer-group configuration assigned to a BGP neighbor, enter the show ip bgp peer-group peer-group-
name command. The show ip bgp neighbor command output does not display peer-group configurations.
Layer 3
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