From: Rhonda Conzone (rhonda5@xxxxxxxx)
Date: Sat Apr 22 2000 - 15:34:25 GMT-3
I would agree with George.
Since you are using a classful protocol, and have 137.20.x.x in your
routing table, the router expects that all subnets of 137.20.x.x will be
learned by the routing protocol. So if it doesn't get a 137.20.60.x from
IGRP, it assumes it doesn't exist, and won't use the default. Thats how it
was explained to me.
See if ip classless does it.
----- Original Message -----
From: George Harizanov <georgehar@mindspring.com>
To: Nnanna Obuba <obuba@bellatlantic.net>; Hedlund, Brad
<BHedlund@realapps.com>; 'Michael Needham' <mineedha@cisco.com>;
<CCIELAB@groupstudy.com>
Sent: Saturday, April 22, 2000 1:33 PM
Subject: Re: ip default network puzzle
> IP CLASSLESS maybe :)
>
>
> ----- Original Message -----
> From: "Nnanna Obuba" <obuba@bellatlantic.net>
> To: "Hedlund, Brad" <BHedlund@realapps.com>; "'Michael Needham'"
> <mineedha@cisco.com>; <CCIELAB@groupstudy.com>
> Sent: Saturday, April 22, 2000 12:22 PM
> Subject: ip default network puzzle
>
>
> >
> > Hi all,
> >
> > I wonder if any one could give me a clue as to what's happening here..
> > I have configured igrp with an ip default-network..but each time I try
to
> > ping an 'unknown' network (with debug ip packet on) I get an
'unroutable'
> > message.
> > Here's the routing table + error message.
> >
> > TIA
> >
> > Nnanna
> >
> >
> > Gateway of last resort is 137.20.200.17 to network 200.200.200.0
> >
> > I 172.168.0.0/16 [100/8576] via 137.20.200.17, 00:00:35, Serial0
> > 137.20.0.0/28 is subnetted, 2 subnets
> > C 137.20.200.16 is directly connected, Serial0
> > C 137.20.40.16 is directly connected, Ethernet0
> > I* 200.200.200.0/24 [100/8576] via 137.20.200.17, 00:00:35, Serial0
> >
> >
> >
> > r4#ping 137.20.60.1
> >
> > Type escape sequence to abort.
> > Sending 5, 100-byte ICMP Echos to 137.20.60.1, timeout is 2 seconds:
> > .....
> > Success rate is 0 percent (0/5)
> > r4#
> > IP: s=137.20.40.17 (local), d=137.20.60.1, len 100, unroutable
> > IP: s=137.20.40.17 (local), d=137.20.60.1, len 100, unroutable
> > IP: s=137.20.40.17 (local), d=137.20.60.1, len 100, unroutable
> > IP: s=137.20.40.17 (local), d=137.20.60.1, len 100, unroutable
> > IP: s=137.20.40.17 (local), d=137.20.60.1, len 100, unroutable
> >
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