Cisco IOS Wide-Area Networking Configuration Guide - Free Books

Step 9Step 10Step 11class-int vc-class-nameExample:Router(config-if)# class-int oamclasspvc [name] vpi/vci l2transportExample:Router(config-if)# pvc 1/200 l2transportxconnect peer-router-id vcid encapsulationl2tpv3Applies a VC class on an the ATM main interface orsubinterface.NoteYou can also apply a VC class to a PVC.Creates or assigns a name to an ATM PVC, specifies theencapsulation type on an ATM PVC, and enters ATM VCconfiguration mode.• The l2transport keyword indicates that the PVC isfor Layer 2 switched connections. After you enterthis command, the router enters ATM VCconfiguration mode.Binds the attachment circuit to a pseudowire VC.Example:Router(config-if-atm-l2trans-pvc)# xconnect10.13.13.13 100 encapsulation l2tpv3Configuring Protocol Demultiplexing for L2TPv3The Protocol Demultiplexing feature introduces the ability to provide native IPv6 support by utilizing aspecialized IPv6 network to offload IPv6 traffic from the IPv4 network. IPv6 traffic is transparentlytunneled to the IPv6 network using L2TPv3 pseudowires without affecting the configuration of the CErouters. IPv4 traffic is routed as usual within the IPv4 network, maintaining the existing performanceand reliability of the IPv4 network.The IPv4 PE routers must be configured to demultiplex incoming IPv6 traffic from IPv4 traffic. The PErouters facing the IPv6 network do not require demultiplexing configuration. The configuration of theIPv6 network is beyond the scope of this document. For more information on configuring an IPv6network, refer to the Cisco IOS IPv6 Configuration Guide.Perform one of the following tasks on the customer-facing IPv4 PE routers to enable IPv6 protocoldemultiplexing:• Configuring Protocol Demultiplexing for Ethernet Interfaces, page 83• Configuring Protocol Demultiplexing for Frame Relay Interfaces, page 84• Configuring Protocol Demultiplexing for PPP Interfaces, page 85• Configuring Protocol Demultiplexing for HDLC Interfaces, page 8782