Important: The features described in this chapter is an enhanced feature and need enhanced feature license. This support is only available if you have purchased and installed particular feature support license on your chassis.
•Important: This section provides the minimum instruction set to enable the GRE Protocol Interface support functionality on GGSN in UMTS network. Commands that configure additional function for this feature are provided in the Command Line Interface Reference.
Step 1
Step 2
Step 3
Step 4
Step 5
Step 6
Step 7 Save the changes to system configuration by applying the example configuration given in Verifying and Saving Your Configuration chapter.
Step 8 Verify configuration of GRE and VRF related parameters by applying the commands provided in the Verifying Your Configuration section of this chapter.context <vpn_context_name> -noconfirm ]ip vrf <vrf_name>ip maximum-routes <max_routes>
• <vpn_context_name> is the name of the system context you want to use for VRF. For more information, refer System Administration Guide.
•
• <vrf_name> is name of the VRF which is to be associated with various interfaces.
• A maximum of 10000 routes can be configured through ip maximum-routes <max_routes> command.context <vpn_context_name>ip interface <intfc_name> tunnelip vrf forwarding <vrf_name>ip address <internal_ip_address/mask>source interface <non_tunn_intfc_to_corp>destination address <global_ip_address>
• <vpn_context_name> is the name of the system context you want to use for GRE interface configuration. For more information, refer Command Line Interface Reference.
• <intfc_name> is name of the IP interface which is defined as a tunnel type interface and to be used for GRE tunnel interface.
• <vrf_name> is the name of the VRF which is preconfigured in context configuration mode.
• <internal_ip_address/mask> is the network IP address with sub-net mask to be used for VRF forwarding.
• <non_tunn_intfc_to_corp> is the name a non-tunnel interface which is required by system as source interface and preconfigured. For more information on interface configuration refer System Administration Guide.
• <global_ip_address> is a globally reachable IP address to be used as a destination address.context <vpn_context_name>ip vrf <vrf_name>network <internal_ip_address/mask>
• <vpn_context_name> is the name of the system context you want to use for OSPF routing. For more information, refer Routing chapter in System Enhanced Feature Configuration Guide.
• <vrf_name> is the name of the VRF which is preconfigured in context configuration mode.
• <internal_ip_address/mask> is the network IP address with sub-net mask to be used for OSPF routing.context <vpn_context_name>aaa group <aaa_server_group>ip vrf <vrf_name>
• <vpn_context_name> is the name of the system context you want to use for IP pool and AAA server group.
• <ip_pool_name> is name of a preconfigured IP pool. For more information refer System Administration Guide.
• <aaa_server_group> is name of a preconfigured AAA server group. For more information refer AAA Interface Administrtion and Reference.
• <vrf_name> is the name of the VRF which is preconfigured in context configuration mode.
• <internal_ip_address/mask> is the network IP address with sub-net mask to be used for IP pool.context <vpn_context_name>ip address pool name <ip_pool_name>
• <vpn_context_name> is the name of the system context you want to use for APN configuration.
• <ip_pool_name> is name of a preconfigured IP pool. For more information refer System Administration Guide.
• <aaa_server_group> is name of a preconfigured AAA server group. For more information refer AAA Interface Administrtion and Reference.
• <vrf_name> is the name of the VRF which is preconfigured in context configuration mode.context <vpn_context_name>
• <vpn_context_name> is the name of the system context you want to use for static route configuration.
• <internal_ip_address/mask> is the network IP address with sub-net mask to be used as static route.
• <tunnel_intfc_name> is name of a predefined tunnel type IP interface which is to be used for GRE tunnel interface.
• <vrf_name> is the name of the VRF which is preconfigured in context configuration mode.Important: All commands listed here are under Exec mode. Not all commands are available on all platforms.
Step 1 The output of this command displays the configuration of the all interfaces configured in a context.
Step 2
![]() |
Cisco Systems Inc. |
Tel: 408-526-4000 |
Fax: 408-527-0883 |