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From: cliff@violet.berkeley.edu (Cliff Frost)
Newsgroups: comp.sys.proteon
Subject: Re: Problem using subnetting
Message-ID: <1989Nov29.193621.13837@agate.berkeley.edu>
Date: 29 Nov 89 19:36:21 GMT
References: <8911291406.AA00281@devvax.TN.CORNELL.EDU>
Sender: usenet@agate.berkeley.edu (USENET Administrator;;;;ZU44)
Organization: University of California, Berkeley
Lines: 32

I think the problem is that you're trying to use subnet 0, which isn't
allowed.  (Eg, if you had a netmask of 255.255.255 you couldn't use
128.173.0.1.)  Given the range of addresses on the cable I can't think
of a solution short of changing the addresses in at least some of
the machines, but I could be wrong.

Obviously it would be nice if the IP Config process told you at config
time that you did something wrong, but I know from experience that
it doesn't, nor do any enlightening messages appear in process 2 at
runtime when the router obviously detects the problem.	

	Cliff Frost, cliff@berkeley.edu

Re:
In article <8911291406.AA00281@devvax.TN.CORNELL.EDU> BENCHOFF@VTVM1.CC.VT.EDU (Phil Benchoff) writes:
>I  am  having  a  problem  setting a subnet mask for one of the networks
>attached to my p4200.  The interface address is 128.173.1.1 and the mask
>I am trying to set is 255.255.224.0.   I know that  this  is  a  strange
>choice  of masks,  but three bits is all I can use at the moment without
>changing a lot of IP addresses on the local cable.
>
>>From IP Config,  I ADD SUB 128.173.0.0 255.255.224.0.   When I  re-start
>the  router  (rel 8.1A),   it won't talk to anything on the local cable.
>It doesn't even send RIP updates on the  local  cable.    If  I  use  an
>eight-bit  subnet  mask,    the  router does send traffic onto the local
>cable.
>
>Proteon tech support says that this should work.   Can anyone  think  of
>any other configuration item that I may be forgetting?  All of the hosts
>on the local cable are in the range 128.173.[1-31].xxx.
>
>Thanks, Phil Benchoff, benchoff@vtvm1.cc.vt.edu