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Re: [ts-7000] RE: ts-7800 how do I make 4 (at least 2) identical network

To:
Subject: Re: [ts-7000] RE: ts-7800 how do I make 4 (at least 2) identical network stacks?
From: Walter Marvin <>
Date: Mon, 4 Nov 2013 18:03:10 -0800 (PST)
The mac address can be easily found. The problem here is that Linux won't 
accept the same sub network on two different interfaces and the IPs of the 
remote boxes can't be changed. This has to be handled by routing below the 
interface level, or raw Ethernet.

--------------------------------------------
On Mon, 11/4/13, Joseph Bouchard <> wrote:

 Subject: Re: [ts-7000] RE: ts-7800 how do I make 4 (at least 2) identical 
network stacks?
 To: 
Date: Monday, November 4, 2013, 5:39 PM
















  



  


    
      
      
       Hi,



 I've been following along in the background, reading
 about half of

 what's been said, and understanding less, but I
 haven't seen anyone

 suggest this...



 Can you use ARP to an advantage here? The normal way
 I've used ARP is

 when we have a terminal server which has not yet been
 configured... you

 arp the mac address to a hostname on your PC, then connect
 to the still

 unconfigured box, and configure it.  Your computer knows how
 to find

 that remote box by it's mac address, even if the remote
 box doesn't yet

 know what it's IP address is yet.  Can we do that here?



 Imagine this implementation... You have 4 boxes which all
 want to have

 the same IP address, but they all have different MAC
 addresses, which

 I'll refer to MAC1, MAC2, etc.  On your TS7800 you have
 a plain old

 single interface eth0 with the address of your choice, and a
 typical

 socket listener.  When a client connects, you accept(), like
 you

 normally would.  It's been years since I've dealt
 with the addr structs

 the sockets use, but I'm thinking there is a way to tie
 a mac address to

 the socket, or lacking that use arp.  At that point your
 file descriptor

 is working correctly and you don't care about IP
 addresses, you are just

 talking back and forth op that open socket.



 Maybe I've missed some critical detail, but the point is
 when you use

 mac addresses, and/or hostnames, and you don't worry
 about addresses any

 more.



 Good luck,

 Joe





    
     

    
    






  











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