Cisco Cisco IOS Software Release 12.3(4)T

SSG must be configured. For a list of prerequisites for SSG, see the “Prerequisites” section of the Service 
Selection Gateway document.

To configure SSG Service Profile Caching, you should understand the following concepts:

The SSG Service Profile Caching feature creates a cache of service profiles in SSG. A service profile is 
downloaded from the AAA server and then stored in the SSG service profile cache as a Service-Info 
object. Subsequent SSG subscribers hoping to use that service are authorized by the SSG service profile 
cache, provided that the service profile remains in the cache. 

To ensure that the service profiles in the SSG service profile cache are regularly updated, the SSG service 
profile cache automatically refreshes the service profiles by downloading the service profiles from the 
AAA server at user-configured intervals (the default is every 120 minutes). SSG service profile caches 
can also be refreshed at any time by user action. Service profiles that are not being used by any SSG 
subscriber are removed from the SSG service profile cache.

SSG service profile caching significantly reduces the number of SSG transactions with the AAA server, 
thereby freeing the AAA server from processing these transactions and freeing AAA server resources 
for other purposes.

Because the SSG Service Profile Caching feature eliminates traffic used for authorizing users for service 
logon from the AAA server, additional bandwidth for SSG and the AAA server is available.

This section contains the following procedures: