4000 Router Series MPLS Configuration Guide

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Configuring basic MPLS L3VPN

Tasks at a

lance

Configuring VPN instances:

1. (Required.) Creating a VPN instance

2. (R

equired.) Associating a VPN instance with an interface

3. (Optional.) Configuring route related attributes for a VPN instance

(Required.) Configuring routing between a PE and a CE

(Required.) Configuring routing between PEs

(Optional.) Configuring BGP VPNv4 route control

Configuration prerequisites

Before you configure basic MPLS L3VPN, complete the following tasks:

• Configure an IGP for the MPLS backbone (on the PEs and Ps) to achieve IP connectivity.

• Configure basic MPLS for the MPLS backbone.

• Configure MPLS LDP for the MPLS backbone so that LDP LSPs can be established.

• Configure IP addresses for CE interfaces connected to PEs.

Configuring VPN instances

VPN instances isolate VPN routes from public network routes and routes among VPNs. This feature

allows VPN instances to be used in network scenarios besides MPLS L3VPNs.

All VPN instance configurations are performed on PEs or MCEs.

Creating a VPN instance

A VPN instance is a collection of the VPN membership and routing rules of its associated site. A VPN

instance might not correspond to one VPN.

To create and configure a VPN instance:

Ste

Command

Remarks

1. Enter system view.

system-view N/A

2. Create a VPN instance and

enter VPN instance view.

ip vpn-instance vpn-instance-name

By default, no VPN instance is

created.

You can configure a maximum of

1023 VPN instances on a PE.

3. Configure an RD for the VPN

instance.

route-distinguisher

By default, no RD is specified for a

VPN instance.

4. (Optional.) Configure a

description for the VPN

instance.

description text

By default, no description is

configured for a VPN instance.