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Configuring BGP Signaling for VPLS

This section describes one way to configure BGP signaling for VPLS, but does not provide complete details about configuring BGP and BGP/MPLS VPNs.

Table 81 lists the commands discussed in this section to configure BGP signaling for VPLS.

Table 81: Commands to Configure BGP Signaling for VPLS

address-family l2vpn	neighbor next-hop-self
address-family vpls	neighbor remote-as
exit-address-family	neighbor send-community
ip router-id	neighbor update-source
neighbor activate	router bgp

To configure BGP signaling for VPLS on the PE router:

Enable the BGP routing protocol on the PE router and specify the local AS; that is, the AS to which this BGP speaker belongs.host1(config)#router bgp 100
The AS number identifies the PE router to other BGP routers.
Configure the PE-to-PE BGP session by first adding an entry to the BGP neighbor table.host1(config-router)#neighbor 10.4.4.4 remote-as 100
Use neighbor commands to specify the peers to which BGP advertises routes.
This example configures only the update-source and next-hop-self attributes. The update-source attribute allows the BGP session to use the IP address of a specific operational interface as the update source address for TCP connections. the next-hop-self attribute forces the BGP speaker to report itself as the next hop for an advertised route that it learned from a neighbor.
host1(config-router)#neighbor 10.4.4.4 update-source loopback 0 host1(config-router)#neighbor 10.4.4.4 next-hop-self
Create the L2VPN address family to configure the router to exchange layer 2 NLRI for all VPLS instances.host1(config-router)#address-family l2vpn signaling
Activate the PE-to-PE session in the L2VPN address family by specifying neighbors that exchange routes from within the current address family.host1(config-router-af)#neighbor 10.4.4.4 activate
Use neighbor commands to configure additional address family parameters for the session, then exit the address family.
This example configures only the next-hop-self attribute, forcing the BGP speaker to report itself as the next hop for an advertised route that it learned from a neighbor.
host1(config-router-af)#neighbor 10.4.4.4 next-hop-self host1(config-router-af)#exit-address-family
Create the VPLS address family to configure the router to exchange layer 2 NLRI for each VPLS instance configured on the router.
You must issue the address-family vpls command separately for each VPLS instance configured on the router.
host1(config-router)#address-family vpls customer1 host1(config-router-af)#exit-address-family host1(config-router)#address-family vpls customer2

After you configure MPLS LSPs and BGP signaling, the router automatically generates a VPLS virtual core interface for each VPLS instance. The VPLS virtual core interface represents all of the MPLS tunnels from the router to the remote VE device.

Configuring BGP Signaling for VPLS

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