Cisco ASR 9000 Series Routing Configuration Guide

BGP community and extended-community filtering cannot be configured for iBGP neighbors. Communities
and extended-communities are always sent to iBGP neighbors under VPNv4, MDT, IPv4, and IPv6 address
families.
Note
SUMMARY STEPS
1.
configure
2.
router bgp as-number
3.
neighbor ip-address
4.
remote-as as-number
5.
address-family{ipv4 {labeled-unicast | unicast | mdt | multicast | mvpn | tunnel} | ipv6
{labeled-unicast | mvpn | unicast}}
6.
Use one of these commands:
•
send-community-ebgp
•
send-extended-community-ebgp
7.
commit
DETAILED STEPS
PurposeCommand or Action
configure
Step 1
Specifies the autonomous system number and enters the BGP
configuration mode, allowing you to configure the BGP routing
process.
router bgp as-number
Example:
RP/0/RSP0/CPU0:router(config)# router bgp
120
Step 2
Places the router in neighbor configuration mode for BGP routing
and configures the neighbor IP address as a BGP peer.
neighbor ip-address
Example:
RP/0/RSP0/CPU0:router(config-bgp)# neighbor
172.168.40.24
Step 3
Creates a neighbor and assigns a remote autonomous system number
to it.
remote-as as-number
Example:
RP/0/RSP0/CPU0:router(config-bgp-nbr)#
remote-as 2002
Step 4
Enters neighbor address family configuration mode for the specified
address family. Use either ipv4 or ipv6 address family keyword
with one of the specified address family sub mode identifiers.
address-family{ipv4 {labeled-unicast | unicast |
mdt | multicast | mvpn | tunnel} | ipv6
{labeled-unicast | mvpn | unicast}}
Step 5
Example:
RP/0/RSP0/CPU0:router(config-bgp-nbr)#
address-family ipv6 unicast
IPv6 address family mode supports these sub modes:
•
labeled-unicast
Cisco ASR 9000 Series Aggregation Services Router Routing Configuration Guide, Release 5.3.x
116
Implementing BGP
Configuring BGP Community and Extended-Community Advertisements

Cisco ASR 9000 Series Specifications

General

Series	ASR 9000
Category	Network Router
Modular Design	Yes
Redundancy	Yes (Hardware and Software)
Operating System	Cisco IOS XR
Interfaces/Ports	10G, 40G, 100G, 400G Ethernet
Expansion Slots	Varies by model
Routing Protocol	BGP, OSPF, IS-IS, EIGRP
Management	CLI, SNMP, NETCONF
Power Supply	Redundant
Port Density	Varies by model
Power Supply Options	AC, DC
Memory	Varies by model
Storage	Varies by model
Dimensions	Varies by model
Weight	Varies by model