Re: Networking Question Regarding Gigbit Ethernet

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Author: Mark Phillips
Date:  
To: Main PLUG discussion list
Subject: Re: Networking Question Regarding Gigbit Ethernet
So I need to run this on the MLB?

Mark
On Jul 1, 2012 1:36 PM, "James Mcphee" <> wrote:

> As such. You need to use whatever eth device you have, of course.
>
> jmcphee@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 <>wrote:
>
>> How do I use ethtool to answer your question?
>>
>> Mark
>>
>>
>> On Sun, Jul 1, 2012 at 12:52 PM, James Mcphee <> wrote:
>>
>>> What does ethtool tell you about what the interface thinks it is?
>>>
>>> On Sun, Jul 1, 2012 at 12:44 PM, Mark Phillips <
>>> > 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
>>>
>>>
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>>
>>
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>
>
>
> --
> James McPhee
>
>
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