Reference Guide

Congure BGP
OS10# configure terminal
OS10(config)# router bgp 100
OS10(config-router-bgp-100)# vrf blue
OS10(config-router-vrf)# neighbor 5.1.1.1
OS10(config-router-neighbor)# remote-as 1
OS10(config-router-neighbor)# description n1_abcd
OS10(config-router-neighbor)# exit
OS10(config-router-vrf)# template t1
OS10(config-router-template)# description peer_template_1_abcd
Congure Dual Stack
OS10 supports dual stack for BGPv4 and BGPv6. Dual stack BGP allows simultaneous exchange of same IPv4 or IPv6 prexes through
dierent IPv4 and IPv6 peers. You can enable dual stack using the activate command in the corresponding address-family mode. By
default, activate command is enabled for the IPv4 address family for all the neighbors.
If a BGP-v4 neighbor wants to carry ipv6 prex information, it activates the IPv6 address-family. For a BGP-v6 neighbor to carry ipv4
prex, it activates the IPv4 address-family.
1 Enable support for the IPv6 unicast family in CONFIG-ROUTER-BGP mode.
address family ipv6 unicast
2 Enable IPv6 unicast support on a BGP neighbor/template in CONFIG-ROUTER-BGP-AF mode.
activate
Peer templates
To congure multiple BGP neighbors at one time, create and populate a BGP peer template. An advantage of conguring peer templates is
that members of a peer template inherit the conguration 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 conguring any route policies
for the template.
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 (Optional) Add a text description for the template in ROUTER-TEMPLATE mode.
description text
4 Enter Address Family mode in ROUTER-NEIGHBOR mode.
address-family {[ipv4 | ipv6] [unicast]}
5 Filter networks in routing updates, create a route-map and assign a ltering criteria in ROUTER-BGP-NEIGHBOR-AF mode.
distribute-list prefix-list-name {in | out}
route-map map-name {in | out}
6 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
7 Add a remote neighbor, and enter the AS number in ROUTER-TEMPLATE mode.
remote-as as-number
• To add an EBGP neighbor, congure the as-number parameter with a number dierent from the BGP as-number congured in
the
router bgp as-number command.
Layer 3
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