Cisco 10000-2P2-2DC Software Guide - Page 568
VRF-Aware VPDN Tunnels, Feature History for GRE Tunnel IP Source and Destination VRF Membership
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Feature History for GRE Tunnel IP Source and Destination VRF Membership Chapter 27 IP Tunneling The tunnel vrf command is used to configure the Tunnel VRF feature. The VRF specified in the tunnel vrf command is the same VRF as the VRF associated with the physical interface over which the tunnel sends packets. This provides outer IP packet routing. For more detailed information, see the Generic Routing Encapsulation Tunnel IP Source and Destination VRF Membership feature module, located at the following URL: http://www.cisco.com/en/US/products/ps6566/products_feature_guides_list.html VRF-Aware VPDN Tunnels The VRF-Aware VPDN Tunnels feature allows you to create VPDN tunnels that use a customer VRF address from a VRF routing table as the tunnel endpoint. The VPDN tunnel terminates in one VRF and the associated PPP sessions terminate in a different VRF. For example, VPDN tunnels can start outside the Multiprotocol Label Switching (MPLS) VPN and terminate within the MPLS VPN. To configure VRF-Aware VPDN Tunnels, use the vpn command in VPDN configuration mode. This command specifies that the source and destination IP addresses of a given VPDN group belong to the specified VRF. Before you enter the vpn command, you must first create the VRF instance using the ip vrf command. Different VRF-aware VPDN tunnels can have overlapping IP addresses across VRF instances. The ip vrf forwarding command, configured in tunnel interface mode, enables VRF forwarding on an interface. The VRF associated with the tunnel in the ip vrf forwarding command configuration is the VRF that the packets are to be forwarded in as the packets exit the tunnel. This provides inner IP packet routing. The Cisco 10000 series router supports the VRF-Aware VPDN Tunnels feature on the PRE2 and PRE3and applies to the router when acting as the L2TP access concentrator (LAC) or a Layer 2 network server (LNS). As a LAC or an LNS, the router can initiate and terminate tunnels within a specified VRF. For more information, see the VRF-Aware VPDN Tunnels feature module, located at the following URL: http://www.cisco.com/en/US/products/ps6566/products_feature_guides_list.html Feature History for GRE Tunnel IP Source and Destination VRF Membership Cisco IOS Release 12.3(7)XI7 12.2(28)SB 12.2(31)SB5 12.2(33)SB Description This feature was integrated into Cisco IOS Release 12.3(7)XI7, enhanced to include domain support, and implemented on the LAC. This feature was integrated in Cisco IOS Release 12.2(28)SB. This feature was introduced on the PRE3. Support for VRF-Aware VPDN tunnels feature on LNS Required PRE PRE2 PRE2 PRE3 PRE3 and PRE4 27-2 Cisco 10000 Series Router Software Configuration Guide OL-2226-23
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