Руководство По Обслуживанию для Cisco Cisco Tunnel Terminating Gateway (TTG)

Generally Available    06-30-2010

GGSN Features in Release 9.0

1-17

Figure 1-1 GRE Deployment Scenario

Apart from other command configuration addition/modifications in various configuration 
modes, following new configuration modes were added to Command Line Interface for this 
feature support:

●

OSPF VRF Configuration Mode

●

IP VRF Context Configuration Mode

●

GRE Tunnel Interface Configuration Mode

This feature requires separate license to enable this for UMTS subscribers.

For more information on functioning and configuration of this interface, refer GRE Protocol 
Interface chapter in System Enhanced Feature Configuration Guide.

IPv4

Network

Mobile 

Node

GGSN

Corporate B 

gateway

Corporate B 

network

Corporate A 

network

Corporate A 

gateway

Access 

Network