Going to try GNS3 until I move my lab, IOS for IINS?

Hi, as above, dont have my lab which has my routers and such. Trying GNS3 for the first time, I need to know what IOS will support everything fully, including CCP, ZBF, ect. IOS I currently have is c1841-advsecurityk9-mz.124-2.T1, I think it will support as the documentation claims 12.4 Adv Sec allows VPN and other security features. Is this version high enough? Also when using GNS 3 does one need to worry about the RAM/DRAM requirements that exist for regular hardware? And finally is there anything special I will need to do with GNS3 and this IOS to support CCP?

Thanks in advance

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Comments

SephStorm

As I had forgotten, GNS3 does not support the 1841. From what i'm seeing the 3725 will suffice, so I will try that out.

veritas_libertas

That's what I was using when I was studying for the CCNA:S. You will need to be sure to look for the 3725 IOS that supports Zone Based Firewalls.

SephStorm

I have no idea which one does. Some google fu reveals:

https://supportforums.cisco.com/thread/2202293

According to Cisco feature navigator it is available in images 12.4(6)T onwards on the 37(25/45)...

The latest image for the 37(25/45) That runs ZBF I can see is 12.4(15)T14 (c3725-adventerprisek9-mz.124-15.T14.bin)

Really I think Cisco needs a whole cert dedicated to decoding releases and their features...