[CentOS] network interface cards with gig support
Greg Bailey
gbailey at lxpro.com
Tue May 8 16:10:28 UTC 2007
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This program is obsolete.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
More information about the CentOS
mailing list