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The best ios version for 2811 router ?

ronin
Level 1
Level 1

hi all 

which ios version is the best for cisco router 2811?

 

in case of using this scenario:

 

Panasonic TDA100 (PRI 0290) ---> (e1)< cisco 2811> (sip trunk) ----> softx3000

 

 

thanks in advance

4 Replies 4

Hi there

i have a 64M  compact flash on 2811 router , 

 

I'm going to use c2800nm-advipservicesk9-mz.151-4.M12a.bin 

 

thanks in advance

R0g22
Cisco Employee
Cisco Employee
That's the best you can use. Since the device is EOL/EOS, there won't be anymore software releases.

I don't know about anyone else, but I had a lot of memory leak issues with 15.1(4)M12a regarding DNS, eventually required rebooting every 24 hours...   These are issues I did not have with 12.x IOS.  you might consider grabbing the last version of 12.x you can get to have it on the flash also...

 

CCIE# 6771