It is the default on recent IP IOS's.
ip routing, ip classless, and ip subnet-zero are all on by default.
Craig
> -----Original Message-----
> From: Everett Dowd [mailto:edowd@clark.net]
> Sent: Friday, 13 October 2000 9:16 AM
> To: George Robbins
> Cc: cisco-nsp@puck.nether.net; Eric@sentgroup.com
> Subject: Re: [nsp] Can't change IP address on 1601
>
>
> It would be nice if Cisco made this the default if you turn
> on routing...
>
>
>
> George Robbins wrote:
>
> > 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
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> > >
> > >
>
> --
> <><><><><><><><><><><><><><><><><><><><><><><><><><><>
> "Failure is not an option"
> Gene Cranz, Apollo 13 mission
> <><><><><><><><><><><><><><><><><><><><><><><><><><><>
> Everett Dowd edowd@clark.net
> CCIE #2409 http://www.clark.net/pub/edowd
> Just bein' virtual =8^) Welcome to the 'net
> |_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|_|
>
>
>
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