Cisco 3825 Software Configuration Guide - Page 170
ip local interface
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ip local interface Appendix A Cisco 3825 Mobile Wireless Edge Router RAN-O Command Reference ip local interface To configure the IP address of the provider edge (PE) router interface to be used as the source IP address for sending tunneled packets, use the ip local interface command in the pseudowire-class configuration mode. To remove the IP address, use the no form of this command. ip local interface interface-name no ip local interface interface-name Syntax Description interface-name Name of the PE interface whose IP address is used as the source IP address for sending tunneled packets over a Layer 2 PW. Defaults No IP address is configured. Command Modes Pseudowire-class configuration Command History Release 12.0(23)S 12.3(2)T 12.4(12)MR2 Modification This command was introduced. This command was integrated into Cisco IOS Release 12.3(2)T. This command was integrated into Cisco IOS Release 12.4(12)MR2. Usage Guidelines Use the same local interface name for all pseudowire-classes configured between a pair of PE routers. It is highly recommended that you configure a loopback interface with this command. If you do not, the router chooses the "best available local address," which could be any IP address configured on a core-facing interface. This configuration could prevent a control channel from being established. Note This command must be configured for pseudowire-class configurations using L2TPv3 as the data encapsulation method. Examples The following example shows how to configure the IP address of the local loopback 0 as the source IP address for sending packets through an L2TPv3 session: Router# config t Router(config)# pseudowire-class l2tp Router(config-pw-class)# ip local interface loopback 0 Router(config-pw-class)# exit Router(config)# exit A-38 Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide OL-15667-03