Hmmm, let's see where to start....
1: EIGRP uses classless routing by default unlike IGRP.
2: Default routes refer to static routes--not dynamic routes used in RIP,
EIGRP, IGRP, etc.
3: The command "ip route 0.0.0.0 0.0.0.0 w.x.y.z" enables a default
route--not "ip classless"
By the way, this is thepuffer's friend ( not the puffer ) responding to
this. I just couldn't resist. Also, I hope I didn't make any major mistakes
in my claims. If so I will be really bummed.
----- Original Message -----
From: "whatshakin" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Wednesday, August 23, 2000 12:27 AM
Subject: Re: ip classless ?
> This is wrong amigo.
>
> The 'ip classless' command is used when configuring default routes. It is
> used because when you create a default route on a router it gets
advertised
> as 0.0.0.0 in addition to the default network. When a router recieves
the
> advertised default route it will forward packets to a destination which
does
> not appear in its routing table. Specifically you need to use the 'ip
> classless' command when using IGRP and EIGRP because they only advertise
the
> network you configured on them. If you do not use this command to enable
> the default path to be used for non-connected subnets of the same major
> classful network, the packets will be dropped at the router.
>
>
> ----- Original Message -----
> From: Casey Fahey <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]>
> Sent: Tuesday, August 22, 2000 8:48 PM
> Subject: Re: ip classless ?
>
>
> > Ah yes, classful addressing. Blast from the past...
> >
> > I am assuming you are aware of the classes of IP addresses, and how a
> > class A address has a first octet of 1-127, etc..
> >
> > Well, what IP Classless means is that the router *does not* assume that
an
> > IP address with a first octet of 1-126 is a /8 address, 128-191 a /16
> > address, 192-223 a /24 address and so forth.
> >
> > Sound a bit archaic? Hmm... So are IGRP and RIP. ; )
> >
> > Your question is kind of tough to answer directly, since you do not need
> to
> > use IP Classless unless you need to break, say a 10.x.x.x network into
/24
> > subnets. If you don't include IP Classless, the router will assume the
> mask
> > is instead /8 and things will get weird...
> >
> > HTH,
> >
> > Casey
> >
> > >From: "Yee, Jason" <[EMAIL PROTECTED]>
> > >Reply-To: "Yee, Jason" <[EMAIL PROTECTED]>
> > >To: "'[EMAIL PROTECTED]'" <[EMAIL PROTECTED]>
> > >Subject: ip classless ?
> > >Date: Tue, 22 Aug 2000 22:07:51 -0500
> > >
> > >hi ,
> > >
> > >Anyone knows why when we use RIP or IGRP routing protocols and we have
a
> > >default network command entered , we need to include ip classless?
> > >
> > >Any form of input will be greatly appreciated
> > >
> > >
> > >thanks
> > >
> > >
> > >Jason
> > >
> > >___________________________________
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