Re: simple connectivity problem

From: Christian Vogel (chris@obelix.hedonism.cx)
Date: Fri Feb 22 2002 - 17:19:11 EST


Hi,

> i have two subnets 10.10.6.0 and 10.10.3.0 connected on e0 and e1 of a Cisco
> 2600 respectively. there are no access lists applied on any of them. but i
> can't ping between each other. i get request timed out.

I assume that you mean 'machines on one network cannot ping machines
on the other network'. Furthermore I assume that these networks
are 10.10.6.0/24 and 10.10.3.0/24 [netmask is 255.255.255.0].

My educated guess is:

Most likely machines on one network or the other are either too old
to know of classless routing (pre-stoneage-unices, for example) or
they took the classful-netmask for 10.10.3.X (which is /8 [255.0.0.0])
as a default which was not changed afterwards.

Check if the hosts on one network have the Cisco as a gateway to the
other network (or default) and have no more-specific routes
(for example /8 to local ethernet with wrong netmask).

        Chris

-- 
Everything is gone;
Your life's work has been destroyed.
Squeeze trigger (yes/no)?
-- David Carlson



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