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Re: Hairy routing question.

To: "netdev@xxxxxxxxxxx" <netdev@xxxxxxxxxxx>
Subject: Re: Hairy routing question.
From: Michael Richardson <mcr@xxxxxxxxxxx>
Date: Mon, 27 Mar 2000 23:00:28 -0500
In-reply-to: Your message of "Mon, 27 Mar 2000 18:50:55 MST." <38E00FFF.FB8C1480@xxxxxxxxxxxxxxx>
Sender: owner-netdev@xxxxxxxxxxx
>>>>> "Ben" == Ben Greear <greearb@xxxxxxxxxxxxxxx> writes:
    Ben> As usual, I seem to be trying to do something that is inherently not
    Ben> how things work.  But, if you have any ideas, I'd love to hear them
    Ben> :)

    Ben> Are there any linux-related mailing lists where this is a more
    Ben> appropriate question?


    Ben> Basically, I want a single PC to look like a bunch of PCs.

    Ben> So, I might have:

                          Ether
--------                    S         ---------
Client -eth0  172.20.20.3   W         | ServerPC
PC     -eth1  172.20.20.4   I    eth0-| 172.20.20.1
       -eth2  172.20.20.5   T         |_________
--------                    C
                            H

    Ben> Now, I would like to be able to have eth0 have one IP address (no
    Ben> virtual interfaces, at least in one configuration), and be able to
    Ben> route packets over a specific eth interface on the Client PC.
    Ben> Assume that a plain old ethernet switch sits between them.

  You are sort of doing trunking. 

    Ben> So, can this be done with something like source-routing?  The

  You don't need to do this, just bind the local port to the address 
on which you wish to send. But that may not work.

    Ben> If that's possible, can I make sure that the ARP fromm ServerPC is
    Ben> answered correctly so that the pkt comes to the right ClientPC
    Ben> ethernet device (and right port on the switch)?

  You can't due to the fact that Alexei doesn't believe that people put
multiple network interfaces on the same physical wire.

   :!mcr!:            |  Solidum Systems Corporation, http://www.solidum.com
   Michael Richardson |For a better connected world,where data flows faster<tm>
 Personal: http://www.sandelman.ottawa.on.ca/People/Michael_Richardson/Bio.html
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