[c-nsp] Need help figuring out IOS versions / featuresets / MIBs

[cc loo]

Hi all,

I have difficulties trying to figure out what versions of IOS provide which
featuresets.

For example i would like to know more about ISG (intelligent services
gateway), i would like to know which IOS version supports it.

>From this, i would like to find out what related information could be polled
from SNMP.

I tried http://tools.cisco.com/ITDIT/MIBS/servlet/index
IOS MIB Locator but im lost on what to input as search fields

Some kind souls please enlighten me