Networking Question Regarding Gigbit Ethernet

[James Mcphee]

As such.  You need to use whatever eth device you have, of course.

jmcphee at locus ~ :) $ sudo ethtool eth2
Settings for eth2:
        Supported ports: [ TP MII ]
        Supported link modes:   10baseT/Half 10baseT/Full
                                100baseT/Half 100baseT/Full
                                1000baseT/Half 1000baseT/Full
        Supported pause frame use: No
        Supports auto-negotiation: Yes
        Advertised link modes:  10baseT/Half 10baseT/Full
                                100baseT/Half 100baseT/Full
                                1000baseT/Half 1000baseT/Full
        Advertised pause frame use: Symmetric Receive-only
        Advertised auto-negotiation: Yes
        Link partner advertised link modes:  10baseT/Half 10baseT/Full
                                             100baseT/Half 100baseT/Full
        Link partner advertised pause frame use: Symmetric
        Link partner 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)
                               drv probe ifdown ifup
        Link detected: yes


On Sun, Jul 1, 2012 at 1:22 PM, Mark Phillips <mark at phillipsmarketing.biz>wrote:

> How do I use ethtool to answer your question?
>
> Mark
>
>
> On Sun, Jul 1, 2012 at 12:52 PM, James Mcphee <jmcphe at gmail.com> wrote:
>
>> What does ethtool tell you about what the interface thinks it is?
>>
>> On Sun, Jul 1, 2012 at 12:44 PM, Mark Phillips <
>> mark at phillipsmarketing.biz> wrote:
>>
>>> I have a 100baseT network with several Debian servers, a mac book, and
>>> some virtual windows. I just picked up a Western Digital My Book Live (MBL)
>>> 2TB NAS at Costco, and powered it up on my network. The unit is just
>>> sitting with its green light on, and the web interface is really slow. When
>>> I ping the device, it shows somewhere from 50% to 86% packet loss. If I
>>> ping any other computer on the network I have 0% packet loss. I have tried
>>> moving the device to different physical plugs, and I get the same results.
>>>
>>> ping results for the MBL from server A:
>>> --- 192.168.25.213 ping statistics ---
>>> 330 packets transmitted, 152 received, 53% packet loss, time 329555ms
>>> rtt min/avg/max/mdev = 0.208/0.273/0.650/0.048 ms
>>>
>>> --- 192.168.25.213 ping statistics from server B ---
>>> 254 packets transmitted, 120 received, 52% packet loss, time 252998ms
>>> rtt min/avg/max/mdev = 0.196/0.264/2.499/0.206 ms
>>>
>>>
>>> ping results for  server A to B:
>>> --- 192.168.25.130 ping statistics ---
>>> 340 packets transmitted, 340 received, 0% packet loss, time 338996ms
>>> rtt min/avg/max/mdev = 0.080/0.177/0.246/0.030 ms
>>>
>>> The device says gigabit Ethernet next to the Ethernet port. Is there any
>>> reason I can't connect a gigabit Ethernet device to a 100baseT network
>>> other than the obvious speed difference? Should I see all this packet loss?
>>> This is actually the second unit I have tried - the first one acted the
>>> same way, so I took it back. I am now wondering if I am doing something
>>> wrong.
>>>
>>>
>>> Thanks!
>>>
>>> Mark
>>>
>>> ---------------------------------------------------
>>> PLUG-discuss mailing list - PLUG-discuss at lists.plug.phoenix.az.us
>>> To subscribe, unsubscribe, or to change your mail settings:
>>> http://lists.PLUG.phoenix.az.us/mailman/listinfo/plug-discuss
>>>
>>
>>
>>
>> --
>> James McPhee
>> jmcphe at gmail.com
>>
>> ---------------------------------------------------
>> PLUG-discuss mailing list - PLUG-discuss at lists.plug.phoenix.az.us
>> To subscribe, unsubscribe, or to change your mail settings:
>> http://lists.PLUG.phoenix.az.us/mailman/listinfo/plug-discuss
>>
>
>
> ---------------------------------------------------
> PLUG-discuss mailing list - PLUG-discuss at lists.plug.phoenix.az.us
> To subscribe, unsubscribe, or to change your mail settings:
> http://lists.PLUG.phoenix.az.us/mailman/listinfo/plug-discuss
>



-- 
James McPhee
jmcphe at gmail.com
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.PLUG.phoenix.az.us/pipermail/plug-discuss/attachments/20120701/0d1ad6ba/attachment.html>