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Configuring a Local Cross-Connect for VPWS

You configure a local cross-connect between two local customer sites by first configuring the two local sites and then configuring the correct local and remote site IDs on the two local interfaces that you are cross-connecting. Figure 132 illustrates cross-connects by showing a portion of a sample VPWS topology.

Figure 132: VPWS Cross-Connects

Image g016444.gif

The following example shows the creation of a cross-connect between sites Westford and Boston. On one customer-facing interface, Westford is considered local and Boston is remote; on the other customer-facing interface, Boston is considered local and Westford is remote. From the perspective of the PE router, both sites are local.

Multihoming is not applicable for VPWS local cross-connects because the local and remote CE devices are connected to the same PE.

To configure a local cross-connect between two local sites:

  1. Configure the two local sites.
    host1(config)#l2vpn exampleco encapsulation-type ethernet
    host1(config)#l2vpn exampleco site-name westford site-id 1
    host1(config)#l2vpn exampleco site-name boston site-id 2
    host1(config)#l2vpn exampleco site-range 10
    host1(config)#l2vpn exampleco rd 100:11
    host1(config)#l2vpn exampleco route-target both 100:1
  2. Configure the correct local and remote site IDs on the two local interfaces that are being cross-connected.
    host1(config)#interface fastEthernet 4/0
    host1(config-if)#l2vpn exampleco local-site-id 1 remote-site-id 2
    host1(config-if)#exit
    host1(config)#interface fastEthernet 4/1
    host1(config-if)#l2vpn exampleco local-site-id 2 remote-site-id 1
    host1(config-if)#exit

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