10/100Mbps NIC, what gives...

[Vincent Trouilliez]

Michael Poole <mdpoole at troilus.org> wrote:
> For many NICs, the "ethtool" program can report what your card
> supports and what its current state is.
> 
> My guess is that your NIC supports 100 Mbps, but the cable modem only
> supports 10 Mbps -- and the NIC switches down to the slower speed to
> match.  (Less likely, the cable modem switches to the slowest speed it
> needs to use -- in which case a forced re-negotiation using ethtool or
> a power cycle should change the negotiated rate.)


Oh, thanks for letting me know of this nice tool, lovely ! :-)

It reports the following:

Settings for eth0:
        Supported ports: [ MII ]
        Supported link modes:   10baseT/Half 10baseT/Full
                                100baseT/Half 100baseT/Full
        Supports auto-negotiation: Yes
        Advertised link modes:  10baseT/Half 10baseT/Full
                                100baseT/Half 100baseT/Full
        Advertised auto-negotiation: Yes
        Speed: 100Mb/s
        Duplex: Full
        Port: MII
        PHYAD: 1
        Transceiver: external
        Auto-negotiation: on
        Supports Wake-on: g
        Wake-on: d
        Link detected: yes

So I guess this is not the problem then. I think the modem might be a
bit old. My ISP says that it's juuust recent enough to cope with
30Mbps, but I read some comments on the net about people having
problems with this modem at that speed. I think I will just ask them to
replace their modem with some newer model, can't hurt...

--
Vince