Users Guide

6. Add a neighbor as a remote AS in ROUTER-TEMPLATE mode, from 1 to 65535 for 2 bytes, 1 to 4294967295 | 0.1 to
65535.65535 for 4 byte, or 0.1 to 65535.65535, in dotted format.
neighbor ip-address
7. (Optional) 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.
8. Assign a peer-template with a peer-group name from which to inherit to the neighbor in ROUTER-NEIGHBOR mode.
inherit template template-name
9. Enable the neighbor in ROUTER-BGP mode.
no shutdown
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, use the show ip bgp peer-group peer-group-
name command. The show ip bgp neighbor command output does not display peer-group configurations.
The following example shows a sample configuration:
Configure peer templates
OS10# configure terminal
OS10(config)# router bgp 64601
OS10(config-router-bgp-64601)# template leaf_v4
OS10(config-router-template)# description peer_template_1_abcd
OS10(config-router-template)# address-family ipv4 unicast
OS10(config-router-bgp-template-af)# distribute-list leaf_v4_in in
OS10(config-router-bgp-template-af)# distribute-list leaf_v4_out out
OS10(config-router-bgp-template-af)# route-map set_aspath_prepend in
OS10(config-router-bgp-template-af)# exit
OS10(config-router-template)# exit
OS10(config-router-bgp-64601)# neighbor 100.5.1.1
OS10(config-router-neighbor)# inherit template leaf_v4
OS10(config-router-neighbor)# remote-as 64802
OS10(config-router-neighbor)# no shutdown
OS10(config-router-neighbor)# exit
OS10(config-router-bgp-64601)# neighbor 100.6.1.1
OS10(config-router-neighbor)# inherit template leaf_v4
OS10(config-router-neighbor)# remote-as 64802
OS10(config-router-neighbor)# no shutdown
View peer group status
OS10# show ip bgp peer-group leaf_v4
Peer-group leaf_v4, remote AS 0
BGP version 4
Minimum time between advertisement runs is 30 seconds
Description: peer_template_1_abcd
For address family: Unicast
BGP neighbor is leaf_v4, peer-group external
Update packing has 4_OCTET_AS support enabled
Number of peers in this group 2
Peer-group members:
100.5.1.1
100.6.1.1
OS10# show ip bgp peer-group leaf_v4 summary
BGP router identifier 100.0.0.8 local AS number 64601
Neighbor AS MsgRcvd MsgSent Up/Down State/Pfx
Layer 3
583