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Implementing BGP on Cisco IOS XR Software
How to Implement BGP on Cisco IOS XR Software
RC-56
Cisco IOS XR Routing Configuration Guide
DETAILED STEPS
Command or Action Purpose
Step 1
configure
Example:
RP/0/RP0/CPU0:router# configure
Enters global configuration mode.
Step 2
router bgp
autonomous-system-number
Example:
RP/0/RP0/CPU0:router(config)# router bgp 120
Enters BGP configuration mode allowing you to configure
the BGP routing process.
Step 3
neighbor-group
name
Example:
RP/0/RP0/CPU0:router(config-bgp)#
neighbor-group nbr-grp-A
Places the router in neighbor group configuration mode.
Step 4
remote-as
autonomous-system-number
Example:
RP/0/RP0/CPU0:router(config-bgp-nbrgrp)#
remote-as 2002
Creates a neighbor and assigns it a remote autonomous
system number of 2002.
Step 5
advertisement-interval
seconds
Example:
RP/0/RP0/CPU0:router(config-bgp-nbrgrp)#
advertisement-interval 10
(Optional) Sets the minimum time between sending BGP
routing updates to 10 seconds.
Step 6
description
text
Example:
RP/0/RP0/CPU0:router(config-bgp-nbrgrp)#
description Neighbor on BGP 120
(Optional) Configures the description “Neighbor on BGP
120” for neighbor group nbr-grp-A.
Step 7
dmz-link-bandwidth
Example:
RP/0/RP0/CPU0:router(config-bgp-nbrgrp)#
dmz-link-bandwidth
(Optional) Advertises the bandwidth of links on router bgp
120.
Step 8
ebgp-multihop [
ttl-value
]
Example:
RP/0/RP0/CPU0:router(config-bgp-nbrgrp)#
ebgp-multihop
(Optional) Allows a BGP connection to neighbor group
nbr-grp-A.
Step 9
local-as
autonomous-system-number
Example:
RP/0/RP0/CPU0:router(config-bgp-nbrgrp)#
local-as 30
(Optional) Specifies that BGP use autonomous system 30
for the purpose of peering with neighbor group nbr-grp-A.