I've seen this sort of behavior when a routing table had a bogus route
entry in it. The failed packets were trying to be sent over the bogus
entry, and the next would be sent according to the good entry. Hence
about half of the packets were lost. Once the errant routing table entry
was removed, no more packets were dropped.
I would check the routing table in the mbl. No idea how it could get
wacked out, but such a thing could cause the symptoms you're seeing.
--
-Eric 'shubes'
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
<[email protected] <mailto:[email protected]>> 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 <[email protected]
<mailto:[email protected]>> 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
<[email protected]
<mailto:[email protected]>
<mailto:mark@__phillipsmarketing.biz
<mailto:[email protected]>>> wrote:
So I need to run this on the MLB?
Mark
On Jul 1, 2012 1:36 PM, "James Mcphee"
<[email protected] <mailto:[email protected]>
<mailto:[email protected] <mailto:[email protected]>>> 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
<[email protected]
<mailto:[email protected]>
<mailto:mark@__phillipsmarketing.biz
<mailto:[email protected]>>>
wrote:
How do I use ethtool to answer your question?
Mark
On Sun, Jul 1, 2012 at 12:52 PM, James Mcphee
<[email protected] <mailto:[email protected]>
<mailto:[email protected] <mailto:[email protected]>>> wrote:
What does ethtool tell you about what the
interface
thinks it is?
On Sun, Jul 1, 2012 at 12:44 PM, Mark Phillips
<[email protected]
<mailto:[email protected]>
<mailto:mark@__phillipsmarketing.biz
<mailto:[email protected]>>> 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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