On 6/20/2012 10:27 AM, Gregory P. Ennis wrote: > Gregory P. Ennis wrote: > <snip> >> I have been chasing a problem with a pci-e TrendNet(TEG-ECTX) gigabit >> card. After adding the card to a machine with a new Centos 6.2 install >> and naming it 'eth4' it works well for 6 to 12 hours and then fails. >> The failure is characterized by dropping its connection speed from 1000 >> to 100 while not allowing any data to flow in or out. When this happens >> a shutdown and reboot does not solve the problem, but shutting down and >> then removing the power does solve the problem. > <snip> >> Some additional information that may be useful. The TrendNet card is >> the second TrendNet card I have used. The first card had the same >> symptoms, and I deduced the card was bad, and purchased another one. The >> symptoms are the same with the second card. > <snip> > Several questions: do you have another machine on the same network? Does > *it* show the problem, around the same time? > > And, finally, did you buy both TrendNet cards from the same vendor? Are > their MACs close? If so, it could be the vendor got a bad batch, either > OEM's fault, or the gorilla who un/loaded it during shipping. > > mark > > --------------------------------------------------------------------- > > Mark, > > I have several machines on that network, and only one machine is having > the problem. The machine is being used as a mail server, web server, > and gateway for the network. After this problem surfaced with the > failure of the eth4 card (internal network), I created a gateway out of > one of the other machines that is working without incident. > > I did purchase both TrendNet Cards from Fry's. Fry's was good about > taking the first one back without question, but now that the second one > has failed, I thought it best to look deeper. I don't have the previous > card's MAC address, but my first thought was that this was a bad card > too. Both the first and second cards did not appear to have any damage > on the boxes or the card itself. Before I tried to get a third card > from a different manufacturer I wanted to post things here to see if > there was an obvious problem I am missing. > > Thanks for your help!!! > > Greg > > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos If you are having to fully 'cold boot' the system before it will work again I can't help but wonder if it is a conflict between special motherboard functions/settings and the card. I've seen this with some high end video cards under Winders. I am totally speculating here and have nothing to draw from, but wake on lan functions and such.... just leaves me wondering. Do you have a different machine/motherboard around where it wouldn't be hard to set up this testing? Maybe Googling a bit on motherboard model and eth card model might give a helpful return? -- John Hinton 877-777-1407 ext 502 http://www.ew3d.com Comprehensive Online Solutions