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Subject: Re: same subnet routing
From: ewheeler,AT,kaico,DOT,com
Date: Mon, 26 Nov 2001 22:34:42 +0100
In-reply-to: <Pine.LNX.4.30.0111261552540.1387-100000@shenendoah.appalachian.home>

Yes -- unless you're bridging, you can't route between identical
subnets (note that routing != bridging anyways).

Putting one on 192.168.3.0/24 and the other on 192.168.4.0/24 should make
routing happier asuming the route tables are setup right, or gated/routed
are setup to RIP across the interfaces (I've not used RIP across cipe, but
theory holds that it should work).

--Eric

On Mon, 26 Nov 2001 jtklaas,AT,mediaone,DOT,net wrote:

> OK, this is probably just lame, but, in an attempt to save some time, I
> decided to make my two subnets the same.  Here's my options file for one
> side (the other being a mirror image of course, names have been changed
> to protect the innocent):
> 
> # the peer's IP address
> ptpaddr         192.168.3.200
> # our CIPE device's IP address
> ipaddr          192.168.3.201
> # my UDP address. Note: if you set port 0 here, the system will pick
> # one and tell it to you via the ip-up script. Same holds for IP 0.0.0.0.
> me              myaddress1.dyndns.org:8181
> # ...and the UDP address we connect to. Of course no wildcards here.
> peer            myaddress2.dyndns.org:8282
> # The static key. Keep this file secret!
> # The key is 128 bits in hexadecimal notation.
> key             ac90de19ab1463d31fa9c0ad99686114
> 
> I can ping and ssh from my address1 to myaddress2 and back again.  But if
> I try to access a machine in the network, it complains:
> 
> [root@mdgw cipe]# ping mountain
> PING mountain.mynet.home (192.168.3.10) from 192.168.3.2 : 56(84)
> bytes of data.
> >From mdgw.mynet.home (192.168.3.2): Destination Host Unreachable
> >From mdgw.mynet.home (192.168.3.2): Destination Host Unreachable
> >From mdgw.mynet.home (192.168.3.2): Destination Host Unreachable
> >From mdgw.mynet.home (192.168.3.2): Destination Host Unreachable
> >From mdgw.mynet.home (192.168.3.2): Destination Host Unreachable
> >From mdgw.mynet.home (192.168.3.2): Destination Host Unreachable
> 
> --- shenendoah.appalachian.home ping statistics ---
> 9 packets transmitted, 0 packets received, +6 errors, 100% packet loss
> 
> Am I just asking for trouble here?  Should I just move one or the other
> private network to a different subnet?
> 
> 

-- 

Eric Wheeler
Network Administrator
KAICO
20417 SW 70th Ave.
Tualatin, OR 97062
www.kaico.com
Voice: 503.692.5268





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