What IOS image for 2610 will support IP CEF?

[chuck007]

I have a 2610 with 24MB RAM and 8MB flash. I found that IOS 12.1 will support it. But which minimal feature version of 12.1 I should get in order to use CEF load balancing as I'm limited on RAM and flash. What IOS image would do the trick? Thanks.

[thisisshanky · Accepted solution]

12.1(1) would work just fine.

[chuck007]

You mean it's in any feature? So the image c2600-i-mz.121-17.bin with only IP features would do OK? Thanks again.

--Chuck

[deilert]

Cef became the default switching mechanism in 12.0

[thisisshanky · Accepted solution]

IP only feature set can be used.

12.1(1) is the minimum in the 12.1 ios RANGE YOU CAN USE.

What you have is a 12.1(17). It also supports CEF in a IP only feature set. Hardware requirements are just fine, 8mb flash/ 24 mb ram.

You can even upgrade the IOS to a 12.2 range, 12.2(12) or 12.2.(12a) with a IP only feature set with the same hardware requirements.