[CentOS] network interface cards with gig support
Gregg
gregg at thegbox.com
Tue May 8 16:14:46 UTC 2007
On Tue, 2007-05-08 at 09:10 -0700, Greg Bailey wrote:
> Gregg wrote:
> > anyone know how to force network cards talk at gig speeds when all it
> > wants to do is establish a connection at 100mbits
> >
> > root at host1 [/backup/cpbackup/daily]# mii-tool
> > eth0: negotiated 100baseTx-FD, link ok
> > eth1: negotiated 100baseTx-FD flow-control, link ok
> >
> >
> >
> One of mii-tool's limitations is that it doesn't report gig speeds
> correctly.
> From the man page:
>
> NOTE
> This program is obsolete. Valid media are only 100baseT4,
> 100baseTx-FD,100baseTx-HD, 10baseT-FD and 10baseT-HD ethernet cards. For
> replacement check eth-tool.
>
> Using ethtool:
>
> [root at el4-node1 ~]# ethtool eth0
> Settings for eth0:
> Supported ports: [ TP ]
> Supported link modes: 10baseT/Half 10baseT/Full
> 100baseT/Half 100baseT/Full
> 1000baseT/Half 1000baseT/Full
> Supports auto-negotiation: Yes
> Advertised link modes: 10baseT/Half 10baseT/Full
> 100baseT/Half 100baseT/Full
> 1000baseT/Half 1000baseT/Full
> Advertised auto-negotiation: Yes
> Speed: 1000Mb/s
> Duplex: Full
> Port: Twisted Pair
> PHYAD: 0
> Transceiver: internal
> Auto-negotiation: on
> Current message level: 0x000000ff (255)
> Link detected: yes
>
> -Greg
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awesome. I didn't know about that util.
Thanks for the info and sure enough
root at host1 [~/.ssh]# ethtool eth1
Settings for eth1:
Supported ports: [ MII ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Half 1000baseT/Full
Supports auto-negotiation: Yes
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Half 1000baseT/Full
Advertised auto-negotiation: Yes
Speed: 1000Mb/s
Duplex: Full
Port: Twisted Pair
PHYAD: 1
Transceiver: internal
Auto-negotiation: on
Supports Wake-on: g
Wake-on: d
Current message level: 0x000000ff (255)
Link detected: yes
-Gregg
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