On Thu, 2008-09-18 at 15:05 -0400, John Kordash wrote:

...

Craig White írta:

...

Is there a command line way to tell me whether a ethernet

connection is

...

100 BaseT or Gigabit Ethernet?

mii-tool

My experience with mii-tool on CentOS4 and 5 is that it won't show link speed above 100 even if it is. If the OP is trying to differentiate 100 vs. 1000, then I would suggest using ethtool instead.

---- yup...mii-tool didn't report what I wanted...

# mii-tool eth0: negotiated 100baseTx-FD flow-control, link ok eth1: negotiated 100baseTx-FD flow-control, link ok

but ethtool did... # ethtool eth0 Settings for eth0: 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: 100Mb/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 [root@srv kbenedetto]# 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

Thanks

Craig