604995471 7500 routers / upgrade issue

[Karina Salas]

Hi Benjamin:

I think that the following link will give you an idea for what you need to
know:
http://www.cisco.com/warp/customer/620/roadmap_b.shtml

This is for the naming:
http://www.cisco.com/en/US/products/sw/iosswrel/ps1818/products_tech_note09186a0080101cda.shtml

In this case 11.1CC goes to 12.0T and 12.0T migrate to 12.1 mainline. Do not
you worry you will not loose anything with the new IOS version.

Please let me know if you have any question.

Best regards

Karina Salas
Customer Support Engineer, Cisco TAC
Cisco Systems
ksalas at cisco.com
978 858 7776
Monday - Friday 11:00 am to 8:00 pm CTM