[plug] Gateway Machine with cable modem - More info

[Nathan Alberti]

Tracing from the linux box gives: 

 1  CPE-24-192-48-1.nsw.bigpond.net.au (24.192.48.1)  29.652 ms  25.809
ms  19.941 ms
 2  ext-router.nsw-remote.bigpond.net.au (24.192.4.3)  11.551 ms  12.161
ms  16.851 ms
 3  192.148.140.166 (192.148.140.166)  46.395 ms  9.528 ms  46.955 ms
 4  192.148.140.22 (192.148.140.22)  41.870 ms  34.751 ms  38.987 ms
 5  Fddi1-1-0.pad13.Sydney.telstra.net (139.130.34.129)  45.247 ms 
20.269 ms  18.823 ms
 6  FastEthernet0-0-0.pad18.Sydney.telstra.net (139.130.249.239)  32.157
ms  12.738 ms  48.037 ms
 7  optvs.lnk.telstra.net (139.130.33.190)  31.481 ms  26.555 ms  17.736
ms
 8  atmsr-1-7.mi1.optus.net.au (202.139.0.150)  32.004 ms  26.575 ms 
30.916 ms

so you would expect the gateway @ telstra to be  24.192.4.3, but if you
try to add this as a default route it blackholes the box. Any reason the
box knows where to go without a default route ??

Matt Kemner wrote:
> 
> On Thu, 18 Nov 1999, Nathan Alberti wrote:
> 
> > The the traffice comes in through the sat, requests should follow a
> > default route to the linux box and then out the cable modem with the
> > source IP of 202.61.188.30 which is routed back via satelite.
> 
> Right, so from the sat box, you want a default route with a gateway of
> 202.61.188.1 (linux box eth1:0) so the packets have a source address of
> 202.61.188.188.30 - then on the linux box you want to first of all add a
> network route (because it's not there) for 202.61.188.0/27 on eth1:0, so
> that it knows where to find the sat box, and a default route to 24.192.x.x
> (whatever your gateway at Telstra is)
> then, when you ping an external site from the sat box, packets should
> travel via eth0 to eth1:0 on the linux box, and from there via eth0 to
> Telstra - from there they should come back via the satellite.
> Does that work?
> 
>  - Matt

-- 
Nathan Alberti - Ackroyd
(Assistant Product Developer)

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