[CentOS] C5 64-bit on Dell not seeing 1 GB link

[nate]

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