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# Configuring Customer-Facing Interfaces in the VPWS Instance

You must configure one of the following types of interfaces as a member of the VPWS to transmit packets between the PE router and each CE device to which the PE router is connected:

- ATM (AAL5 VCC transport or ATM VCC cell transport)
- Cisco HDLC
- Ethernet (Fast Ethernet, Gigabit Ethernet, or 10-Gigabit Ethernet)
- Frame Relay
- PPP
- VLAN and S-VLAN subinterfaces over Fast Ethernet, Gigabit Ethernet, or 10-Gigabit Ethernet interfaces

To configure a customer-facing interface for an VPWS instance:

1. Access Interface Configuration mode for a layer 2 interface for the VPWS on the PE router.
   `
   host1(config)#interface fastEthernet 4/0
   `
2. Configure the local and remote site IDs on the interface to specify the interface as a member of the VPWS L2VPN.
   `
   host1(config-if)#l2vpn exampleco local-site-id 1 remote-site-id 2
   host1(config-if)#exit
   `
3. Repeat for all customer-facing interfaces in the VPWS.
   `
   host1(config)#interface fastEthernet 4/1
   host1(config-if)#l2vpn exampleco local-site-id 1 remote-site-id 3
   host1(config-if)#exit
   `

#### Related Topics

- interface fastEthernet
- l2vpn local-site-id remote-site-id

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