Re: [lwip-users] DHCP issues

[Ed Sutter]

Tom,
If its of any help, I have a basic dhcp/bootp server
that runs on the PC that I used when developing the
MicroMonitor DHCP/BOOTP client.  This would allow you
to connect your target directly to a PC isolated
from the rest of the world.  No other traffic
and no concern regarding switch issues.
Unfortunately, it only runs on windows.
Let me know if you want it, and I'll email it
to you directly.
Ed Sutter


Leon Woestenberg wrote:
> 
> Hello Tom,
> 
> > I have confirmed DHCP performing a discover and getting
> > an offer and then formatting and transmitting a request
> > but the sniffer doesn't see the request. Has anyone run into
> > this issue? 0.6.4, Coldfire 5282, gnu/gcc/insight
> >
> As already hinted; you are probably not seeing all the traffic
> with the sniffer, but only the broadcast traffic.
> 
> Make sure that the link the sniffer also sees the traffic
> of unicast traffic. This can be achieved by using a
> Ethernet hub instead of a Ethernet switch.
> 
> Hubs forward all traffic to all ports.
> Switches forward unicast traffic to the corresponding MACs
> discovered on the ports, and broadcast to all ports.
> 
> If possible, run the network sniffer on the DHCP server.
> 
> To develop lwip/dhcp.c, I used a Linux DHCP server
> running Ethereal (.org).
> 
> Regards,
> 
> Leon.
> 
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