175
(Optional.) Enabling logging for BGP route flapping
Configuring basic MPLS L3VPN
Configuring VPN instances:
1. (Required.) Creating a VPN instance
2. (Required.) 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.
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.
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 correspond to more than one VPN.
To create and configure a VPN instance:
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, n
created.
3. Configure an RD for the VPN
instance.
route-distinguisher
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, n
configured for a VPN instance.
5. (Optional.) Configure a VPN
ID for the VPN instance.
vpn-id
vpn-id
configured for a VPN instance.