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Old 5th January 2012
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mbw mbw is offline
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Join Date: May 2010
Location: Seattle, WA
Posts: 13
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UPDATE: 1/2012

I am up and running in production a bridging firewall with OpenBSD 5.0 on a sun fire x4170 PCI-e based machine. Im using the 10gigE dual port Intel X520-DA2 adapter.

I think it is worth mentioning in this post a note I got from the folks at Calomel:

---begin calomel comment

"Using ALTQ - packet queuing apparently cant work with 10gig yet, there isnt
enough bandwidth or there is a bug that doesnt let you set the
max bandwidth high enough...

if you want to support 10G you can not use Altq. The reason is
altq's bandwidth value is limited to a 32bit float value meaning you
can only go up to 4294Mb/sec.

Here is a link to the post we made on the Openbsd and FreeBSD mailing
list about this issue:

pf ALTQ bandwidth limited to a 32bit value (4294Mb)
http://lists.freebsd.org/pipermail/f...ly/006203.html

No solutions were purposed from the group. The only idea the pf guys
had was to wait till "prio" queuing is done in pf. That will take up
to a year to finish though.

Secondly, ALTQ is a huge performance hit. When using anything more
then 4gbit/sec we notice heavy CPU usage."

--end Calomel comment
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