EIGRP Network command won't accept wildcard

[Randall White]

I'm setting up a lab with some old 2500 routers. I noticed that the EIGRP network command won't accept wildcards, and the route shows up in the table as a classfull route. I have tried the "IP Classless" command w/ no luck. The IOS is 12.0(9) and the lab involves GRE over IPSec with NAT.

Any Ideas?

Thx, Randy

[thisisshanky]

The network command for EIGRP with mask option was introduced into Cisco IOS starting with 12.0(4) T. Note that this is a T train IOS. I would think that you might need to upgrade to a T train or use an IOS from 12.1/.2 or .3 series.