Cisco Systems MPC-273 manual How to Configure Mpls VPNs over IP Tunnels, MPC-277

Implementing MPLS VPNs over IP Tunnels on Cisco IOS XR Software

How to Configure MPLS VPNs over IP Tunnels

Inter-AS and CSC Support over IP Tunnels

The L3VPN Inter-AS feature provides a method of interconnecting VPNs between different VPN service providers. Inter-AS supports connecting different VPN service providers to provide native IP L3VPN services. For more information about Inter-AS, see Implementing MPLS Layer 3 VPNs on

Cisco IOS XR Software.

Carrier Supporting Carrier (CSC) is implemented in circumstances in which one service provider needs to use the transport services provided by another service provider. The service provider that provides the transport is called the backbone carrier. The service provider, which uses the services provided by the backbone carrier, is called a customer carrier. Backbone carriers with CSC, bridge two or more customer carrier sites through an MPLS VPN/MPLS VPN over IP tunnels backbone. For more information about CSC, see Implementing MPLS VPNs over IP Tunnels on Cisco IOS XR Software.

How to Configure MPLS VPNs over IP Tunnels

The following procedures are required to configure MPLS VPN over IP:

•Configuring the Global VRF Definition, page MPC-277(required)

•Configuring a Route-Policy Definition, page MPC-279(required)

•Configuring a Static Route, page MPC-280(required)

•Configuring an IPv4 Loopback Interface, page MPC-281(required)

•Configuring a CFI VRF Interface, page MPC-283(required)

•Configuring the Core Network, page MPC-284(required)

•Configuring Inter-AS and CSC support over IP Tunnels, page MPC-285

•Verifying MPLS VPN over IP, page MPC-292(optional)

Note All procedures occur on the local PE (PE1). Corresponding procedures must be configured on the remote PE (PE2).

Configuring the Global VRF Definition

Perform this task to configure the global VRF definition.

SUMMARY STEPS

1.configure

2.vrf vrf-name

3.address-family ipv4 unicast

4.import route-target[0-65535.0-65535:0-65535 as-number:nn ip-address:nn]

5.export route-target[0-65535.0-65535:0-65535 as-number:nn ip-address:nn]

6.exit

7.address-family ipv6 unicast

8.import route-target[0-65535.0-65535:0-65535 as-number:nn ip-address:nn]

	Cisco IOS XR MPLS Configuration Guide
OL-12284-01		MPC-277