Fedora core 4 on 1850 only running at 10MBps

Todd Lyons tlyons at ivenue.com
Mon Jun 25 14:58:37 CDT 2007


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On Mon, Jun 25, 2007 at 03:03:11PM -0400, Marcel White wrote:

>A couple (2) of my production 1850 servers I have discovered are running
>at 10MBps on a 100MBps switch. The other 3 seem to be working fine at
>100MBps. Cables have been changed by my *hands* at our production
>facility. The OS is fedora core 4, which I assumed would run at 100 by
>default. Is there anything I should be looking for to possibly change
>these interfaces to use 100MBps? Or has anyone else ever experienced
>this issue? Thanks for any information.

Cisco 100mbit switches suck at autonegotiation.  If you have a Cisco
switch that's managed, set the port 100 Mbit full, and then hard code
your eth device to 100 Mbit full.  As others have said, ethtool will be
remarkably enlightening as to what's happening.  If this is a production
machine, you really should wait until traffic is at its lowest point as
traffic gets unstable for a small bit.
- -- 
Regards...		Todd
Open Source: The concept of standing on others' shoulders instead of toes.
Linux kernel 2.6.17-6mdv   2 users,  load average: 0.01, 0.06, 0.02
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