On Mon, Jan 18, 2010 at 04:39:24PM -0500, Michael Breuer wrote:

Some output from tc -s qdisc:

...

After the conclusion of the test:
qdisc pfifo_fast 0: dev eth0 root refcnt 2 bands 3 priomap  1 2 2 2
1 2 0 0 1 1 1 1 1 1 1 1
 Sent 244900497 bytes 3416350 pkt (dropped 0, overlimits 0 requeues 0)
 rate 0bit 0pps backlog 0b 0p requeues 0
qdisc pfifo_fast 0: dev eth1 root refcnt 2 bands 3 priomap  1 2 2 2
1 2 0 0 1 1 1 1 1 1 1 1
 Sent 564380 bytes 4708 pkt (dropped 0, overlimits 0 requeues 0)
 rate 0bit 0pps backlog 0b 0p requeues 0

Great!

During the test, 8.9GB received; 232.9MB sent).

I also connected a second device through the wifi router. I was able
to ping that device w/o loss while DHCP packets were being dropped
to the other connected device.

Could you remind us if the problem is always with this first device?
Btw, I wonder if you could test it skipping the (HP?) switch?

Jarek P.