Configuring Interworking Between a VXLAN EVPN and a VPLS

Usage Scenario

When a DC with an EVPN VXLAN deployed interconnects to an enterprise campus through an MPLS L2VPN, interworking between a VXLAN EVPN and a VPLS must be deployed.

On the network shown in Figure 1, the TOR, which is a DC's gateway, accesses the backbone network through the egress routers PE1 and PE2 on the DC network. PE3, which is the egress router on the campus network, interconnects to PE1 and PE2 through the MPLS VPLS network. VXLAN and VPLS interworking is configured on PE1 and PE2 to implement communication between the DC and campus network.

Figure 1 Interworking between a VXLAN EVPN and a VPLS

Pre-configuration Tasks

Before configuring interworking between a VXLAN EVPN and a VPLS, complete the following tasks:

Configure interfaces and IP addresses for the egress device PE3 on the campus network, egress devices PE1 and PE2 on the DC network, and the TOR.
Configure an IGP on PE3, PE1, PE2, and the TOR to implement IP connectivity on the backbone network.
Enable MPLS on PE3, PE1, and PE2. Configure MPLS LDP LSPs between PE3 and PE1 and between PE3 and PE2.
Configure Layer 2 connections between CEs and PEs.

Creating VSIs and Configuring PW Connections: Before enabling interconnection between PE1, PE2, and PE3 on an MPLS VPLS network, you must create VSIs and configure PWs on them.

Configuring a VXLAN EVPN: Before enabling interconnection between PE1, PE2, and the EOR, configure basic EVPN and VXLAN functions on PE1 and PE2, and create EVPN instances and NVE interfaces.

Establishing BGP Peer Relationships: This section describes how to establish a BGP peer relationship between each of PE1 and PE2 and the EOR and configure BGP peers.

Binding EVPN Instances and VSIs to BDs: To implement interconnection between an enterprise campus network and a DC, bind an EVPN instance and a VSI to the same BD created on each of PE1 and PE2.

(Optional) Configuring BFD for VPLS PW: Configuring BFD for VPLS PW accelerates PW fault detection, speeding up switching of upper-layer applications.

Verifying the Configuration of Interworking Between a VXLAN EVPN and a VPLS: After configuring interworking between a VXLAN EVPN and a VPLS, verify the configuration.