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Finding speed of NIC Card

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Old 01-25-2013
manoj.solaris manoj.solaris is offline
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Finding speed of NIC Card

Hi,

I would like to know how to find out ACTUAL speed of NIC Card.

I have used the command ethtool eth0, it is showing supported modes,

but what is acutal speed ? how to find out?
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Old 01-25-2013
RudiC RudiC is offline Forum Advisor  
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Code:
# ethtool eth0
Settings for eth0:
    Supported ports: [ TP ]
    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 
                            1000baseT/Full 
    Advertised auto-negotiation: Yes
    Speed: 100Mb/s             <-------------- !

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Old 01-25-2013
manoj.solaris manoj.solaris is offline
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Thanks RudiC,I am confused becuase mii-tool is showing diffrent speed.


output of eth-tool

Code:
 ethtool eth1
Settings for eth1:
        Supported ports: [ TP ]
        Supported link modes:   10baseT/Half 10baseT/Full
                                100baseT/Half 100baseT/Full
                                1000baseT/Full
        Supports auto-negotiation: Yes
        Advertised link modes:  10baseT/Half 10baseT/Full
                                100baseT/Half 100baseT/Full
                                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
        Link detected: yes

output of mii-tool (below command is showing different NIC speed)

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


Last edited by Scott; 01-25-2013 at 09:23 PM.. Reason: Code tags again
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Old 01-25-2013
Corona688 Corona688 is offline Forum Staff  
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I don't think gigabit uses mii anymore. That is to say, mii has no way of reporting speeds above 100baseT, a new standard was made.

Last edited by Corona688; 01-25-2013 at 10:33 AM..
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Old 01-26-2013
manoj.solaris manoj.solaris is offline
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Many Many Thanks Corona688.
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