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Implementing BGP on Cisco IOS XR Software
How to Implement BGP on Cisco IOS XR Software
RC-44
Cisco IOS XR Routing Configuration Guide
OL-14356-01
Enabling BGP Routing
Perform this task to enable BGP routing and establish a BGP routing process. Configuring BGP
neighbors is included as part of enabling BGP routing.
Note At least one neighbor and at least one address family must be configured to enable BGP routing. At least
one neighbor with both a remote AS and an address family must be configured globally using the
address family and remote as commands.
Prerequisites
BGP must be able to obtain a router identifier (for example, a configured loopback address). At least,
one address family must be configured in the BGP router configuration and the same address family must
also be configured under the neighbor.
Restrictions
If the neighbor is configured as an external BGP (eBGP) peer, you must configure an inbound and
outbound route policy on the neighbor using the route-policy command.
SUMMARY STEPS
1. configure
2. route-policy route-policy-name
3. end-policy
4. end
or
commit
5. configure
6. router bgp as-number
7. bgp router-id ip-address
8. address-family {ipv4 unicast | ipv4 multicast | ipv4 tunnel | ipv4 mdt | ipv6 unicast | ipv6
multicast | vpnv4 unicast | vpnv6 unicast}
9. exit
10. neighbor ip-address
11. remote-as as-number
12. address-family {ipv4 unicast | ipv4 multicast | ipv4 labeled-unicast | ipv4 tunnel | ipv4 mdt |
ipv6 unicast | ipv6 multicast | ipv6 labeled-unicast | vpnv4 unicast | vpnv6 unicast}
13. route-policy route-policy-name {in | out}
14. end
or
commit