Re: Networking Question Regarding Gigbit Ethernet

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Author: Stephen
Date:  
To: michael, Main PLUG discussion list
Subject: Re: Networking Question Regarding Gigbit Ethernet
Or if you have any leftover hardware you can build an openfiler box. I have
had immense success with them in the past.
On Jul 1, 2012 4:49 PM, "Michael Butash" <> wrote:

> Out of the last several external WD drives I've gotten for myself and
> others, most have failed prematurely, caused very buggy hardware issues
> (bios wouldn't even load with their usb drive connected), and prior
> mentioned removal of firmware features to allow drives to be raid friendly.
> I showed my support by not buying them for a good 3-4 years now.
>
> Seagate raced to last with the maxtor purchase, wd just borg'd hitachi's
> drive business, leaving Samsung as about the only other viable hd company.
> Competition is obviously alive and well in this business with the product
> quality showing as a result.
>
> Probably better off sniping a used little drobo unit off ebay on the cheap
> and byod than messing with vendor nas junk if they can't even ship a stable
> os on the unit.
>
> -mb
>
>
> On 07/01/2012 04:18 PM, Mark Phillips wrote:
>
>> 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
>> < <mailto:mark@**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 <
>>     <mailto:michael@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
>>             <
>>             <mailto:mark@**phillipsmarketing.biz<>

>> >
>>             <mailto:mark@__phillipsmarketi**ng.biz<http://phillipsmarketing.biz>
>>             <mailto:mark@**phillipsmarketing.biz<>>>>
>> wrote:

>>
>>                  So I need to run this on the MLB?

>>
>>                  Mark

>>
>>                  On Jul 1, 2012 1:36 PM, "James Mcphee"
>>             < <mailto:jmcphe@gmail.com>
>>             <mailto:jmcphe@gmail.com <mailto:jmcphe@gmail.com>>> 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
>>             <
>>             <mailto:mark@**phillipsmarketing.biz<>

>> >
>>             <mailto:mark@__phillipsmarketi**ng.biz<http://phillipsmarketing.biz>
>>             <mailto:mark@**phillipsmarketing.biz<>

>> >>>
>>
>>                      wrote:

>>
>>                          How do I use ethtool to answer your question?

>>
>>                          Mark

>>
>>
>>                          On Sun, Jul 1, 2012 at 12:52 PM, James Mcphee
>>             < <mailto:jmcphe@gmail.com>
>>             <mailto:jmcphe@gmail.com <mailto:jmcphe@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
>>             < <mailto:mark@**
>> phillipsmarketing.biz <>>
>>             <mailto:mark@__phillipsmarketi**ng.biz<http://phillipsmarketing.biz>
>>             <mailto:mark@**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
>>              <mailto:jmcphe@gmail.com>
>>             <mailto:jmcphe@gmail.com <mailto:jmcphe@gmail.com>>

>>
>>
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>>                      --
>>                      James McPhee
>>              <mailto:jmcphe@gmail.com>
>>             <mailto:jmcphe@gmail.com <mailto:jmcphe@gmail.com>>

>>
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