CISCO 7500 SERIES ROUTERS NOT SUPPORTED IN CISCO IOS SOFTWARE RELEASE 12.4T
® 7500 Series routers will not be supported in the Cisco IOS
® Software Release 12.4T train, starting with the first release of 12.4T. Cisco 7500 Series routers will continue to be supported in Cisco IOS Software Release 12.4 mainline.
Customers currently running Cisco IOS Software Release 12.3T (or below) are encouraged to migrate to Cisco IOS Software Release 12.4 mainline to get the latest bug fixes. Cisco 7500 Series routers will also continue to be supported in Cisco IOS Software releases 12.0S and 12.2S. Some customers might find it beneficial to migrate to these releases, depending on the feature requirements.