I've got a Dell Precision Workstation 490 with 64-bit Centos 5, fully updated, with an on-board Broadcom 57xx gigabit Ethernet controller, updated BIOS, 1 GB switch, and /var/log/messages and dmesg both claim the link is 100 Mb, not 1 GB. I tried setting eth0 to mtu 9000 but got an error in going so. What do I need to do to have the card see 1 gb? Thanks. Scott
> I've got a Dell Precision Workstation 490 with 64-bit Centos 5, fully > updated, with an on-board Broadcom 57xx gigabit Ethernet controller, updated > BIOS, 1 GB switch, and /var/log/messages and dmesg both claim the link is 100 > Mb, not 1 GB. > > I tried setting eth0 to mtu 9000 but got an error in going so. > > What do I need to do to have the card see 1 gb?I would run "ethtool eth0" and look at the output. What does ethtool think your card is running at? I would also run "ethtool -s eth0 autoneg on" which should set the card in autonegotiation mode .. which should set your card to 1 Gb. Barry
Scott Ehrlich wrote:> I've got a Dell Precision Workstation 490 with 64-bit Centos 5, fully > updated, with an on-board Broadcom 57xx gigabit Ethernet controller, > updated BIOS, 1 GB switch, and /var/log/messages and dmesg both claim the > link is 100 Mb, not 1 GB. > > I tried setting eth0 to mtu 9000 but got an error in going so. > > What do I need to do to have the card see 1 gb?What kind of switch is it connected to? If it's a managed switch, login to it and see if there are any errors in the log. Have you tried another cable? Have you tried to plug the workstation into another workstation that has a GigE NIC and see if they connect at Gig speeds? When you do network related tasks at 100Mbit are there any errors reported by ifconfig(interface errors), or by the switch? Are you using the tg3 driver, bcm57xx driver, the bnx2 driver or something else? What does lspci say for your NIC? nate
Are you using CAT5e or CAT6 cabling? What brand of switch are you using? On Tue, Feb 19, 2008 at 9:56 PM, Scott Ehrlich <scott at mit.edu> wrote:> I've got a Dell Precision Workstation 490 with 64-bit Centos 5, fully > updated, with an on-board Broadcom 57xx gigabit Ethernet controller, > updated BIOS, 1 GB switch, and /var/log/messages and dmesg both claim the > link is 100 Mb, not 1 GB. > > I tried setting eth0 to mtu 9000 but got an error in going so. > > What do I need to do to have the card see 1 gb? > > Thanks. > > Scott > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos >-- Adam Breaux breauxaj at gmail.com http://www.adambreaux.com/ http://www.linkedin.com/pub/0/9b3/a39 -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/centos/attachments/20080220/29cc007c/attachment.html>
On Tue, 19 Feb 2008 at 9:56pm, Scott Ehrlich wrote> I've got a Dell Precision Workstation 490 with 64-bit Centos 5, fully > updated, with an on-board Broadcom 57xx gigabit Ethernet controller, updated > BIOS, 1 GB switch, and /var/log/messages and dmesg both claim the link is 100 > Mb, not 1 GB. > > I tried setting eth0 to mtu 9000 but got an error in going so. > > What do I need to do to have the card see 1 gb? > > Thanks.I'm seeing the same problem on some (well, all but one of my) 32bit IBM xSeries 335 machines. They're all connected to Foundry switches, though not all the same switch. I'm wondering if it has to do with <https://bugzilla.redhat.com/show_bug.cgi?id=330181>. There are some test packages listed in that bugzilla... -- Joshua Baker-LePain QB3 Shared Cluster Sysadmin UCSF
On Wed, 20 Feb 2008, Adam Breaux wrote:> Are you using CAT5e or CAT6 cabling? What brand of switch are you using?I was misinformed. The desktop connections are actually 100 Mb. But, we did get to learn about a few tools and methods to check the link and make changes, so it was not wasted time. Sorry 'bout that. Scott> > On Tue, Feb 19, 2008 at 9:56 PM, Scott Ehrlich <scott at mit.edu> wrote: > >> I've got a Dell Precision Workstation 490 with 64-bit Centos 5, fully >> updated, with an on-board Broadcom 57xx gigabit Ethernet controller, >> updated BIOS, 1 GB switch, and /var/log/messages and dmesg both claim the >> link is 100 Mb, not 1 GB. >> >> I tried setting eth0 to mtu 9000 but got an error in going so. >> >> What do I need to do to have the card see 1 gb? >> >> Thanks. >> >> Scott >> _______________________________________________ >> CentOS mailing list >> CentOS at centos.org >> http://lists.centos.org/mailman/listinfo/centos >> > > > > -- > Adam Breaux > breauxaj at gmail.com > > http://www.adambreaux.com/ > http://www.linkedin.com/pub/0/9b3/a39 >