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How to choose and install software for the RP and RSP 7000, 7100, 7200, 7300, 7400, 7500, 7600, 10000 (ESR), 12000, uBR71XX, uBR72XX and uBR10000p
Whenever you install a new card, module or Cisco IOS Software image, it is important to verify that the router has enough memory and that the hardware and software are compatible with the features that you want to use.
To check for hardware and software compatibility and memory requirements, perform these steps:
If you want to keep the same features as the version currently running on your router, but do not know which feature set you are using, issue the show version command on your router and paste it in the Output Interpreter tool. It is important to check for feature support, especially if you plan to use recent software features.
If you need to upgrade the Cisco IOS Software image to a new version or feature set, refer to How to Choose a Cisco IOS Software Release.
If a Cisco IOS Software Release upgrade is required, refer to these documents: