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

[Scott R. Ehrlich]

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 <[EMAIL PROTECTED]> 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
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Adam Breaux
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Re: [CentOS] C5 64-bit on Dell not seeing 1 GB link

[Joshua Baker-LePain]

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 
.  There are some test 
packages listed in that bugzilla...


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Joshua Baker-LePain
QB3 Shared Cluster Sysadmin
UCSF
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Re: [CentOS] C5 64-bit on Dell not seeing 1 GB link

[Adam Breaux]

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 <[EMAIL PROTECTED]> 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
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>



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Adam Breaux
[EMAIL PROTECTED]

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http://www.linkedin.com/pub/0/9b3/a39
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Re: [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


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

[Barry Brimer]

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

[Scott Ehrlich]

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
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