> First check that you have link lights on all ports of your
> switch.  Since  you have the server and the client
> separately plugged into the switch you  should only be
> using straight-through cables.  The only pins you need to
> be  worried about is 1, 2, 3 and 6.  As long as they are
> right then the rest  don't matter.

They are all straight through cables. All ports seem to work
when I plug the lappie straight into the switch.
The patch cable is a cat6 cable. The home made one is cat5e
- dunno if that makes a difference.
 
> Check that you have a working straight-through patch cable
> from kitchen to  laptop. Also, the entire run from the PC
> to the switch should be less than  100 meters.  Also
> consider that the connectors may not be properly crimped 
> (inspect the gold contacts on the RJ45 and the flush box
> pins).

The patch cable is about 2 or 3 metres. The run from the
switch to the flushbox is just under 15m (originally 15m but
I clipped bits off it when I was practicing my crimping
skills).

> It is possible that you could have untwisted the cables
> too much, but you  would be pretty unlucky if that was the
> case, you can get away with a good 2cm.

I think I may be at about 3-4cm - I'll redo it if you think
it will help. There's plenty of slack for me to clip and
re-do (with cable getting shorter each time :-( )

> On your PC do the DHCP request and monitor the server:
> 
> tail -vf /var/log/messages
> 
> Incoming and outgoing DHCP requests will appear there.  I
> am sure you  already knew that though.

On IPCop those messages appear on VT12
 
> Another thought, is this a smart switch?  Perhaps ports
> have been  configured to be blocked or on a different
> subnet (LAN).

It's just a $67 8 port switch. I'm not sure how to configure
it as it doesn't have an IP address that I can browse or
telnet to. There's no mention of smart features on the spec
sheet - not even a monitoring port.
I believe it keeps a MAC address table to remember which
port to send each packet to, but I turned it off and back on
to clear the MAC table.

Yuri

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