Configuring EVC VPLS Accessing L3VPN

This section describes how to create a VBDIF interface to implement EVC VPLS accessing L3VPN.

Usage Scenario

EVC interfaces are Layer 2 interfaces that do not support IP addresses. If EVC L2VPN accessing L3VPN is required, you must create a BD-based interface, or VBDIF interface. A VBDIF interface is a Layer 3 interface that supports IP address configuration. The VBDIF interface allows communication with the L3VPN.

As shown in Figure 1, on the access network, the CSG provides a BD for user site access and connects to the ASG over a VPLS PW; on the bearer network, the ASG uses the VBDIF interface to terminate the VPLS PW and establishes an L3VPN with the RSG.

Figure 1 EVC VPLS accessing L3VPN

Pre-configuration tasks

Before configuring EVC VPLS accessing L3VPN, complete the following task:

Establishing the EVC Model

Procedure

Configure EVC VPLS on the CSG and ASG. For configuration details, see Configuring the EVC Model to Carry VPLS Services.
Create VPN instances on the ASG and RSG and establish an MP-IBGP peer relationship. For configuration details, see Configuring Basic BGP/MPLS IP VPN.
Create a VBDIF interface on the ASG and bind the VBDIF interface to the L3VPN.
1. Run system-view
  The system view is displayed.
2. Run interface vbdif bd-id
  A VBDIF interface is created, and the VBDIF interface view is displayed.
  
  The VBDIF interface number must be the ID of a BD that has been created.
3. Run ip binding vpn-instance vpn-instance-name
  A VPN instance is bound to the VBDIF interface.
4. Run ip address ip-address { mask | mask-length } [ sub ]
  An IP address is assigned to the VBDIF interface.
Run commit
The configuration is committed.