The problem ended up being the "tg3" Broadcom NIC kernel module driver.
It doesn't work properly at Gigabit speeds. Turning it down to 100
Megabit fixed the issue. Does anybody know where I should report this bug?
Thanks for all your help,
-Jesse
William L. Maltby wrote:
On Fri, 2007-07-20 at 12:29 -0400, Jesse Cantara wrote:
Hi Bob,
<snip>
The issue I'm having is that external traffic is being forwarded
properly, BUT that it drops the connection occasionally. It's not
consistent (maybe 2 out of 5 downloads from the internet through the
router to the webserver will drop), and the connections are being made,
so it's not a fundamental configuration issue. It's something more
sneaky. I'm thinking that there's something in the kernel or network
driver that isn't functioning properly, or maybe a buffer that is
becoming full and abandoning the connection?
<snip>
-Jesse
Bob Chiodini wrote:
Jesse Cantara wrote:
Hello,
I am trying to figure out a problem I'm having using CentOS on a
machine as a router. The short story is: any traffic routed through
the router seems to get disconnected at random occasionally.
<snip>
Someone recently posted a thread about a similar complaint to the lists
recently. IIRC, the [SOLVED] post mentioned a problem with MTU being
smaller than some of the packets received at one point, causing
fragmentation, and the next step not being to reassemble the packet
because of a certain flag being set.
I don't remember which bit the flag was and no little about this, but I
remember the general gist.
Maybe your problem is similar?
HTH
--
Bill
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