Usually that message shows up when something like 255.225.255.0 comes
off your fingers or you put .0 or .255 in as the IP addresses.
You might also check that you've got "ip subnet-zero" and "ip classless"
in your config... Defaults differ depending on IOS version.
George
>
> From: "Eric Bloom" <Eric@sentgroup.com>
> To: "<"<cisco-nsp@puck.nether.net>
> Subject: [nsp] Can't change IP address on 1601
>
> I wonder if someone can help me. I'm trying to change the IP address on =
> the e0 interface of a 1601 router and when I enter the commands, I get a =
> message telling me that the netmask is invalid. The current IP is a =
> public IP using a /24 mask and I want to change to a private (10.0.0.someth=
> ing) class C IP and mask. I was able to make the change on one of the =
> routers but the second box won't take the change but tells me that the =
> mask (and in the error message it says /24 mask) is invalid for the IP =
> address. The specific command I tried is:
>
> IP address 10.0.0.221 255.255.255.0
>
> Any insight would be greatly appreciated.
>
> Thanks,
>
> Eric Bloom
>
> Please note that the contents of this message and any attachments may be confidential and are intended only for the intended recipient. If you received this message in error, please notify the sender by hitting the reply key and then delete the message and any attachments from your computer. Thank you.
>
>
This archive was generated by hypermail 2b29 : Sun Aug 04 2002 - 04:12:18 EDT