Cisco 10000-2P2-2DC Software Guide - Page 159
Associating VRFs, Example 4-9, Associating a Downstream VRF with a Virtual Template Interface
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Chapter 4 Configuring Multiprotocol Label Switching Half-Duplex VRF Associating VRFs After you define and configure the VRFs on the PE routers, associate each VRF with: • An interface or subinterface, or • A virtual template interface The virtual template interface is used to create and configure a virtual access interface (VAI). For information about configuring a virtual template interface, see the "Configuring a Virtual Template Interface" section on page 3-17. To associate a VRF, enter the following commands on the PE router beginning in interface configuration mode: Step 1 Step 2 Step 3 Step 4 Step 5 Command Purpose Router(config-if)# ip vrf forwarding vrf-name Associates an interface with the VRF you specify. vrf-name is the name of the VRF associated with the interface. Router(config-if)# ip unnumbered type number Enables IP processing on an interface without assigning an explicit IP address to the interface. The type and number arguments are the type and number of another interface on which the router has an assigned IP address. It cannot be another unnumbered interface. Note The Cisco 10000 series router supports only unnumbered interfaces for the Half-Duplex VRF feature. Router(config-if)# exit Returns to global configuration mode. Router(config)# interface virtual-template Creates a virtual template interface and enters interface number configuration mode. Router(config-if)# ip vrf forwarding vrf-name1 [downstream vrf-name2] Associates a virtual template interface with the VRF you specify. The vrf-name1 argument is the name of the VRF associated with the virtual template interface. The vrf-name2 argument is the name of the downstream VRF into which the PPP peer route and all of the per-user routes from the AAA server are installed. If a AAA server is used, the AAA server provides the VRF membership; you do not need to configure the VRF members on the virtual templates. Example 4-9 associates the VRF named vpn1 with the Virtual-Template1 interface and specifies the downstream VRF named D. Example 4-9 Associating a Downstream VRF with a Virtual Template Interface Router(config)# interface Virtual-Template1 Router(config-if)# ip vrf forwarding vpn1 downstream D Router(config-if)# ip unnumbered Loopback1 Router(config-if)# no peer default ip address Router(config-if)# ppp authentication chap vpn1 Router(config-if)# ppp authorization vpn1 Router(config-if)# ppp accounting vpn1 OL-2226-23 Cisco 10000 Series Router Software Configuration Guide 4-25
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