Networking Question Regarding Gigbit Ethernet
Mark Phillips
mark at phillipsmarketing.biz
Sun Jul 1 16:18:25 MST 2012
Well, the update finished, but I am still getting over 50% packet loss when
I ping the device. I guess back to costco it goes.
Mark
On Sun, Jul 1, 2012 at 3:05 PM, Mark Phillips <mark at phillipsmarketing.biz>wrote:
> The device is now updating the firmware......and there are no packets lost
> on pings to the device or pings from the device.
>
> Mark
>
>
> On Sun, Jul 1, 2012 at 2:53 PM, Michael Butash <michael at butash.net> wrote:
>
>> Unless you have a managed switch, don't force negotiation, as it'll just
>> cause the switch to run in 10base/half-duplex (lowest common denominator)
>> when there is no negotiation advertised. It's sitting in 100/full already,
>> which is what you want.
>>
>> If you do ifconfig eth0, do you see any errors? Collisions and CRC
>> errors will stack if there is a negotiation problem. Seems like either the
>> switch or phy port on the mybook is wack, but doesn't make a lot of sense
>> you'd lose that much anyways. Try different switch port/cable if there are
>> errors.
>>
>> Have you tried pinging from the mbl itself to the gateway or other hosts?
>> Could be they have some kind of input iptables filter
>> rate-limiting/shaping packets or some such, but unlikely.
>>
>> -mb
>>
>>
>>
>> On 07/01/2012 02:39 PM, Mark Phillips wrote:
>>
>>> I was able to ssh into the MBL and it has ethtool installed -
>>>
>>> MyBookLive:~# ethtool eth0
>>> Settings for eth0:
>>> Supported ports: [ MII ]
>>> Supported link modes: 10baseT/Full
>>> 100baseT/Full
>>> 1000baseT/Full
>>> Supports auto-negotiation: Yes
>>> Advertised link modes: 10baseT/Full
>>> 100baseT/Full
>>> 1000baseT/Full
>>> Advertised auto-negotiation: Yes
>>> Speed: 100Mb/s
>>> Duplex: Full
>>> Port: MII
>>> PHYAD: 1
>>> Transceiver: external
>>> Auto-negotiation: on
>>> Link detected: yes
>>> MyBookLive:~#
>>>
>>> So, it should work on 100baeT. Any thoughts on why I am loosing so many
>>> packets?
>>>
>>> Mark
>>>
>>> On Sun, Jul 1, 2012 at 2:09 PM, Mark Phillips
>>> <mark at phillipsmarketing.biz <mailto:mark@**phillipsmarketing.biz<mark at phillipsmarketing.biz>>>
>>> wrote:
>>>
>>> So I need to run this on the MLB?
>>>
>>> Mark
>>>
>>> On Jul 1, 2012 1:36 PM, "James Mcphee" <jmcphe at gmail.com
>>> <mailto:jmcphe at gmail.com>> wrote:
>>>
>>> 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 <mailto:mark@**phillipsmarketing.biz<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 <mailto: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
>>> <mailto:mark@**phillipsmarketing.biz<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<PLUG-discuss at lists.plug.phoenix.az.us>
>>> <mailto:PLUG-discuss at lists.**plug.phoenix.az.us<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<http://lists.PLUG.phoenix.az.us/mailman/listinfo/plug-discuss>
>>>
>>>
>>>
>>>
>>> --
>>> James McPhee
>>> jmcphe at gmail.com <mailto:jmcphe at gmail.com>
>>>
>>>
>>> ------------------------------**---------------------
>>> PLUG-discuss mailing list -
>>> PLUG-discuss at lists.plug.**phoenix.az.us<PLUG-discuss at lists.plug.phoenix.az.us>
>>> <mailto:PLUG-discuss at lists.**plug.phoenix.az.us<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<http://lists.PLUG.phoenix.az.us/mailman/listinfo/plug-discuss>
>>>
>>>
>>>
>>> ------------------------------**---------------------
>>> PLUG-discuss mailing list -
>>> PLUG-discuss at lists.plug.**phoenix.az.us<PLUG-discuss at lists.plug.phoenix.az.us>
>>> <mailto:PLUG-discuss at lists.**plug.phoenix.az.us<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 <http://lists.PLUG.phoenix.az.us/mailman/listinfo/plug-discuss>
>>>
>>>
>>>
>>>
>>> --
>>> James McPhee
>>> jmcphe at gmail.com <mailto:jmcphe at gmail.com>
>>>
>>>
>>> ------------------------------**---------------------
>>> PLUG-discuss mailing list -
>>> PLUG-discuss at lists.plug.**phoenix.az.us<PLUG-discuss at lists.plug.phoenix.az.us>
>>> <mailto:PLUG-discuss at lists.**plug.phoenix.az.us<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 <http://lists.PLUG.phoenix.az.us/mailman/listinfo/plug-discuss>
>>>
>>>
>>>
>>>
>>> ------------------------------**---------------------
>>> PLUG-discuss mailing list - PLUG-discuss at lists.plug.**phoenix.az.us<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<http://lists.PLUG.phoenix.az.us/mailman/listinfo/plug-discuss>
>>>
>> ------------------------------**---------------------
>> PLUG-discuss mailing list - PLUG-discuss at lists.plug.**phoenix.az.us<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<http://lists.PLUG.phoenix.az.us/mailman/listinfo/plug-discuss>
>>
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.PLUG.phoenix.az.us/pipermail/plug-discuss/attachments/20120701/7abe07b8/attachment.html>
More information about the PLUG-discuss
mailing list