Cisco Cisco IOS Software Release 12.0 S 發佈版本通知

These release notes for the Cisco 7200 series routers, Cisco 7500 series routers, Cisco 10000 series edge 
services routers, Cisco 10720 Internet router, and Cisco 12000 series Internet routers support Cisco IOS 
Release 12.0S, up to and including Release 12.0(33)S11. 

Cisco IOS Release 12.0(33)S does not support the Cisco 12000 series Internet routers. Cisco IOS 
Release 12.0(33)S1 and later releases do support the Cisco 12000 series Internet routers.

The Cisco 7202, Cisco 7204, and Cisco 7206 routers are no longer supported in Cisco IOS Release 12.0S 
beginning with Cisco IOS Release 12.0(33)S. Cisco 7204VXR and Cisco 7206VXR routers continue to 
be supported. 

Cisco IOS Release 12.0(31)S and later releases do not support the Cisco 10000 series edge services 
routers. 

These release notes are updated as needed to describe new features, memory requirements, hardware 
support, software platform deferrals, and changes to the microcode and related documents. 

Cisco IOS Release 12.0S is based on Cisco IOS Release 12.0 and is tailored for service provider 
environments. Cisco IOS Release 12.0S is the follow-on release to Cisco IOS Release 11.1CC, which 
was also targeted to the service provider environment. Additionally, many of the features in Cisco IOS 
Release 12.0S were first introduced for the Cisco 12000 series routers on Cisco IOS Release 11.2GS and 
for the Cisco 7000 family on Cisco IOS Release 12.0T. Furthermore, Cisco IOS Release 12.0S 
incorporates all the features that were introduced in Cisco IOS Release 12.0ST up to and including 
Release 12.0(21)ST.