Networking Question Regarding Gigbit Ethernet

Mark Phillips mark at phillipsmarketing.biz
Sun Jul 1 13:22:28 MST 2012


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
>>
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>
>
>
> --
> James McPhee
> jmcphe at gmail.com
>
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