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ethtool eth0 - network question


queeg

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I telnet into my unRAID server and typed "ethtool eth0".  It looks like the nic is only set to 100MB.  Since this is a newly built server am I supposed to configure the network device? 

 

 

 

root@Queeg:~# ethtool eth0

Settings for eth0:

        Supported ports: [ TP 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: MII

        PHYAD: 0

        Transceiver: internal

        Auto-negotiation: on

        Supports Wake-on: pumbg

        Wake-on: g

        Current message level: 0x00000033 (51)

        Link detected: yes

root@Queeg:~#

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There "should" be no need to manually configure the NIC. 

The NIC is capable of 1Gb/s, however it is only auto-negotiating to 100Mb/s.

 

The NIC wont be able to auto-negotiate beyond the speed of a directly connected device.

Is the device to which it is connected (router, switch, computer) also capable of 1Gb?

 

A poor quality connection may also prevent auto-negotiating to 1Gb.

Is the cable being used CAT5E or better?

Is it a reliable cable?

 

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Hi mate. Do you have it connected to a network hub/switch which only supports 10/100Mbps? Perhaps your using a very only patch lead? You should be getting a 1Gbps link on any new Motherboards with a onboard NIC as these days they are all 1Gbps I'd think.

Try connecting your unRAID server to a newer desktop or laptop directly which has a 1Gbps port. 1Gbps NICs support direct connection to each other without the need of a cross-over patch lead. Unless your network device doesn't support this speed, or an older patch lead, your in trouble. Some linux kernels can slower the NIC speed of some NICs, but I would doubt that the unRAID OS would do this if it has native driver support. Hope this helps.

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I swapped out the cable with a newer one and it is connecting at 1000mb/s Full duplex now. 

 

root@Queeg:/boot/packages# ethtool eth0

Settings for eth0:

        Supported ports: [ TP 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: MII

        PHYAD: 0

        Transceiver: internal

        Auto-negotiation: on

        Supports Wake-on: pumbg

        Wake-on: g

        Current message level: 0x00000033 (51)

        Link detected: yes

root@Queeg:/boot/packages#

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