Configuring The Asbrs To Exchange Vpn-Ipv4 Addresses For Ip Tunnels - Cisco CRS Configuration Manual

Providing VPN Connectivity Across Multiple Autonomous Systems with MPLS VPN Inter-AS with ASBRs Exchanging
VPN-IPv4 Addresses

Configuring the ASBRs to Exchange VPN-IPv4 Addresses for IP Tunnels

Perform this task to configure an external Border Gateway Protocol (eBGP) autonomous system boundary
router (ASBR) to exchange VPN-IPv4 routes with another autonomous system.
SUMMARY STEPS
1. configure
2. router bgp autonomous-system-number
3. address-family { ipv4 tunnel }
4. address-family { vpnv4 unicast }
5. retain route-target { all | route-policy route-policy-name }
6. neighbor ip-address
7. remote-as autonomous-system-number
8. address-family { vpnv4 unicast }
9. route-policy route-policy-name { in }
10. route-policy route-policy-name { out }
11. neighbor ip-address
12. remote-as autonomous-system-number
13. update-source type interface-path-id
14. address-family { ipv4 tunnel }
15. address-family { vpnv4 unicast }
16. Use the commit or end command.
DETAILED STEPS
Step 1 configure
Example:
RP/0/RP0/CPU0:router# configure
Enters the Global Configuration mode.
Step 2 router bgp autonomous-system-number
Example:
RP/0/RP0/CPU0:router(config)# router bgp 120
RP/0/RP0/CPU0:router(config-bgp)#
Enters Border Gateway Protocol (BGP) configuration mode allowing you to configure the BGP routing process.
Step 3 address-family { ipv4 tunnel }
Example:
RP/0/RP0/CPU0:router(config-bgp)# address-family ipv4 tunnel
RP/0/RP0/CPU0:router(config-bgp-af)#
Configures IPv4 tunnel address family.
Cisco IOS XR Virtual Private Network Configuration Guide for the Cisco CRS Router, Release 6.1.x
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Implementing MPLS Layer 3 VPNs