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Re: Network card cable connection query



On Thu, Sep 25, 2008 at 11:29 AM, Alan Cox <alan lxorguk ukuu org uk> wrote:
> On Thu, 25 Sep 2008 11:15:56 +0100
> "Dan Track" <dan track gmail com> wrote:
>
>> Hi
>>
>> Is there a way to identify whether a network card has a rj45 cable
>> plugged into it from linux?
>
> ethtool
> /sbin/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
>        Supports Wake-on: pg
>        Wake-on: d
>        Current message level: 0x000000ff (255)
>        Link detected: yes
>
Thanks Alan, that was spot on. I assume the "link detected" means that
a cable is connected in.

Dan


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