[ipxe-devel] 0x040ee119 error if heavy traffic on line

[Matthew Helton]

Oliver,

Even the largest DHCP servers don't require bonded interfaces except in
very specific configurations.

This is probably an issue with your DHCP Server: If you are running your
DHCP server on a Bonded interface (generally not required), there may be
some switch-side configuration settings you may want to look into
('PortFast' or 'Portfast Edge'. If you are using a 802.1ad Interface with
Load Balancing (Round Robin) "Mode 4" as the serving interface for DHCP,
you can easily run into problems if you happen to have a "Mode 4" VPC
configured across an A-B switch pair.

In general, I have seen more problems caused with UDP-based protocols
and 802.1ad "Mode 4" than simple failover Modes ("Mode 1" and "2"), as a
consequence I have shied away from using 802.1ad "Mode 4" for DHCP and TFTP
Services.  I have had much better results using 802.1ad "Mode 4" on
TCP-based protocols (Web and File Services).

A simple test for this would be to disconnect all but one interface from
the server and run a couple of traces vs. all interfaces connected.

Best,

Matt



On Mon, Jan 20, 2014 at 1:52 PM, Oliver Rath <rath at mglug.de> wrote:

> Hi List,
>
> I get here some strange error http://ipxe.org/err/040ee1 if multiple pcs
> are starting here over net with a load of ~500mbit on bond0-interface
> (from 4x eth0 interfaces).
>
> It seems, that it happens on this line:
>
> :dhcp
> dhcp || goto dhcp
>
> After some tries (partly > 40) the dhcp is successful again and the
> script continues. What can I do to avoid this? Longer dhcp-waiting time?
> On which side?
>
> TfH!
>
> Oliver
>
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>



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