Which Software Train will be supported

Question

We have several 3640 Routers in Our network.
The Life Cycle have the following results:
End of Sale = 15.12.2002
End of Engineering = 30.11.2005
End of Life =30.11.2007
Cisco Policy
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Where available, we will provide bug fixes, maintenance releases, work arounds, or patches for critical bugs reported via the TAC or Cisco.com Web site for a period of 5 years from the end-of-sale date for operating system software and for a period of 3 years from the end-of-sale date for application software. Bear in mind that it may be necessary to use a software upgrade release to correct a reported problem.
Questions
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Which Software Train will be supported and maintaint (also vulnerability) until 5 Years after the EOS Date for the 3640 plattform as
described in the Cisco policy ?
which Train is supported for the 2600 Router plattform ?

Answer 1

The last supported release for the Cisco 3640 and 3640A routers is Cisco IOS Software Release 12.4 Mainline
The Cisco 3640 Router will continue to support new IOS features through 12.2T and 12.3T, and software support will be provided through 12.4M or November 2005, whichever comes first.This support will be until 2007, November.
The 3640A is identical to the 3640 in terms of physical characteristics, interface support, performance, memory and IOS feature support. All currently open mainline release trains and the 12.2T release train will be supported, starting with the latest maintenance releases: IOS Releases 12.0(24), 12.1(17), 12.2(12) and 12.2(11)T1. The Cisco 3640 and 3640A will continue to support new IOS features through 12.2T and 12.3T, and software support will be provided through 12.4M or November 2005, whichever comes first.
The following 2 documents will clearly answer ur question:
http://www.cisco.com/en/US/products/hw/routers/ps274/prod_eol_notice09186a008032d840.html
http://www.cisco.com/en/US/products/hw/routers/ps274/prod_bulletin0900aecd802a94b0.html