Примечания к выпуску для Cisco Cisco IOS Software Release 12.3(8)T

When you enable SSG, the SSG subsystem in IOS acquires system resources that are never released, 
even after you disable SSG. The SSG Unconfig feature enables you to release and clean up system 
resources when SSG is not in use by entering the no ssg enable force-cleanup command.

Platforms: MWAM on Catalyst 6500 (Cat6000-MWAM) and Cisco 7600 (7600-MWAM)

SSG does not currently support a totally unique accounting session ID in the RADIUS accounting 
records. The SSG Unique Session ID feature provides a unique format in the RADIUS accounting 
records in order to be compatible with a customer’s existing backend billing systems.

Each SSG instance on the MWAM is an individual router. Because the MWAM supports five SSGs, it 
provides five times the session density (i.e., number of user sessions) of the NPE 400 7200/7400 
platform. In addition, the MWAM processors provide twice the throughput of processors used in the NPE 
400 7200/7400 platform. Overall, the MWAM improves SSG throughput by 5-10 times that of the NPE 
400 7200/7400 platform.

External physical interfaces provided by the supported platforms are not visible to the SSG software. 
This is an important advantage of the MWAM implementation when compared to the Cisco 7200/7400 
platform. The MWAM implementation protects the SSG from interface and link failures. As long as the 
platform provides redundant links to other system components (e.g., GGSN, AAA servers), the SSG 
configuration is not affected and its operation is maintained.

The IP address management for the SSG on the MWAM is the same as the Cisco 7200/7400 platform 
with one exception: virtual subinterfaces (VLANs) are required for uplink, downlink, and network 
management paths.

Each SSG on the MWAM is configured with its own IP addresses including addresses for user traffic, 
RADIUS client function, and network management.