From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jerry Van Baren <gerald.vanbaren@smiths-aerospace.com>
Date: Tue, 29 Nov 2005 12:33:55 -0500
Subject: [U-Boot-Users] U-boot suppoorts VPN?
In-Reply-To: <1701279.post@talk.nabble.com>
References: <1700773.post@talk.nabble.com> <438C82F1.2020707@uclinux.net> <1701279.post@talk.nabble.com>
Message-ID: <438C9103.3060800@smiths-aerospace.com>
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lauren73 (sent by Nabble.com) wrote:
> Thanks a lot! I am sorry for confusing you.
> But the fact is that the 2 boards are connected as the following 
> drawing. The hardware is designed as this. I need to download kernel for 
> board 2 from hard drive of board 1. Usually switch cannot talk to switch 
> without bridge or router. So in this case I think I need VPN in order to 
> download the kernel using tftp.
> 
>  HD----CPU1 ----switch1 ------switch 2----CPU2 (uboot)
> |----------board 1------   ---|-------------board 2--------------|

Assuming switch1 and switch2 are normal ethernet switches, you need a 
crossover cable connecting switches 1 and 2 (Tx of switch 1 -> Rx of 
switch 2 and vice versa) unless your switch PHYs support auto-crossover. 
  You need CPU1 to run TFTP server software.  The it should Just 
Work[tm], no VPN or VLAN.

On the other hand, your hardware may not be normal ethernet switches, in 
which case we have even less of a clue than you.

gvb