You need to add the following command (in the global configuration mode)
ip subnet-zero
The problem is that you're trying to subnet the 10.0.0.0 network into a
smaller subnet while you want to use the first subnet (subnet zero) which is
not the default behavior for IOS prior to 12.0
Regards
--
Shahir Boshra
Telecommunications Specialist
USAID - Egypt
[EMAIL PROTECTED]
Tel: +202-5165505 ext. 2436
Fax: +202-5164659
"Dan West" <[EMAIL PROTECTED]> wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> Sorry, but I couldn't find the answer to this in the
> groupstudy archives...
>
> 2500/2600 Router (can't recall exact model): IOS ver
> 11.3.x
>
> Int s0/0 (module)
>
> encapsulation frame-relay
> point-to-point
> ip classless
>
> Not the exact copy, but you get the idea. We set up
> the 10.0.0.1 address for the int, but it won't take
> ANY subnet mask besides 255.0.0.0.
>
> Is this s/thing to do with the IOS? the F/R interface?
> s/thing we didn't add? Did add incorrectly?
>
> Thanks!
>
> =====
> Dan West -- CCNA
>
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