Configuring LDP Signaling for VPLS
Like other Layer 2 VPNs, you must enable a VPLS instance to isolate VPLS traffic from other network traffic. An important element of a VPLS instance is the signaling protocol. You can configure BGP signaling, LDP signaling, or both BGP and LDP signaling in a VPLS instance.
To configure LDP signaling, you must first enable a VPLS instance to isolate VPLS traffic from other network traffic. To enable a VPLS instance, include the instance-type vpls statement at the [edit routing-instances instance-name] hierarchy level. To configure LDP signaling within the instance, identify the virtual circuit with the vpls-id statement and specify the PE routers participating in the instance with the neighbor statement:
To fully enable LDP signaling on a PE in a VPLS instance, you must also enable LDP on the loopback interface of the router. To enable LDP on the loopback interface, include the interface lo0.0 statement at the [edit protocols ldp] hierarchy level:
For LDP signaling within a VPLS routing instance, the Junos OS supports the following values only:
- FEC—FEC 128 and FEC 129
- Control bit—0
- Ethernet pseudowire type—0x0005
- Ethernet tagged mode pseudowire type—0x0004
