Jesse Cantara wrote: > Actually, I spoke too soon. > > Setting the NIC to 100 Mbit did not fix the issue, I just happened to > misdiagnose a fix, because it seemed to be working for quite some > time, but it is back to the old problems. > > Basically, I'm at wits end right now. I'm going to go down to the > colocation and see if they can test the network drop into our cabinet. > If it's not that, then I'm convinced it's the tg3 driver. > > -Jesse > > Jesse Cantara wrote: >> 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 >>> >>> _______________________________________________ >>> CentOS mailing list >>> CentOS at centos.org >>> http://lists.centos.org/mailman/listinfo/centos >>> >> >> _______________________________________________ >> CentOS mailing list >> CentOS at centos.org >> http://lists.centos.org/mailman/listinfo/centos >> > > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos Hi Jesse, FWIW I have an IBM346 server at a client running RHEL4 using the Broadcom NICS and the tg3 driver and have not experienced any dropped packages over the past 18 months. ChrisG