Differences in 2621 series routers

Hi,
Can someone please explain the difference of the following 2621 series router?.
1.2621 FE VPN
2.2621 XM
3.2621 WIC-1T
4.2621 w/NM
I am confussed of what each is able to accomplish before buying. I am gradually building a lab that could help me up until CCIE level.
Please help me

Ok sure.
1.2621 FE VPN
This suggests that the router is standard 2621 and not the XM version. The VPN could refer to two things:
a) There is VPN IOS sw pre-loaded
b) There is an HW based VPN AIM module installed. You don't need either for CCIE.
2.2621 XM <-- This device supports extra memory and therefore more will offer more features since it can hold a larger IOS image than non-XM routers. You will be tested on the additional feature that the standard 2621 will not support.
3.2621 WIC-1T
This simply would refer to 2621 standard with a WIC-1T card. We need XM so it's no good to be honest.
4.2621 w/NM
The 2600 series routers have 3module slots in the back as you may know. It has one NM module slot which is a fair bit larger than the other 2 WIC slots. So this description would translate to a standard 2621 router with some sort of NM module. For further information about NM modules please see the following link:
<http://www.cisco.com/univercd/cc/td/doc/product/access/acs_mod/cis2600/hw_inst/nm_inst/nm-doc/ovrnetm.htm>
I must point out that some of these module options can be very expensive but equally others have very little value.
All the best,
Ajaz
pls rate this post if it helped.

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