SEZZ
1 Copper

RE: Opti 9020s with Intel I217-LM nics causing network issues

We are having similar problems. We have 8 operational 9020 AIO with the same Intel I217-LM nics, running WIN OS 7 pro Sp1. Apparently when the 9020 system goes in sleeping mode it causes the network to sent traffic to its network interface, which causes after a while a saturation of the network. Simply activating the sleeping system terminates the traffic immediately.

We are going to disable the sleeping mode on all 9020 systems and see if this severe problem still occurs.

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balkanman
1 Copper

RE: Opti 9020s with Intel I217-LM nics causing network issues

We have an issue with our HP800 boxes generating a lot of multicast (IPv6) traffic when they go to sleep (they completely flood the network).

Temporary resolution was to turn of AMT in BIOS. We will have to contact HP to get this one sorted. 

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Mathetos
1 Copper

RE: Opti 9020s with Intel I217-LM nics causing network issues

Thank you for posting.  Good to know there is a BIOS connection.  Same Intel I217-LM nics, or different? 

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M_Bolinao
1 Copper

RE: Opti 9020s with Intel I217-LM nics causing network issues

Hi All,

Just coming across this same issue as a part of a HW Refresh, but have not seen it happen first hand but through feedback from my team as I was away. I'd love to do some testing in our environment to confirm the Dell Optiplex 9020's are indeed the cause but it affects other things on our network to the point it will cost the business money when they go down.

Anyway I was wondering with respect to the the IPv6 multicasting that is occurring which eventually floods the network is this occurring for people on machines when they are still in the active state? Or does it occur when the PC's go to sleep as has been noted in this thread as well? We know it is the Dell's causing this issue because once they got taken off the network things went back to normal.

Feedback appreciated TIA

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mcdonamwION
1 Copper

RE: Opti 9020s with Intel I217-LM nics causing network issues

Anyway I was wondering with respect to the the IPv6 multicasting that is occurring which eventually floods the network is this occurring for people on machines when they are still in the active state? Or does it occur when the PC's go to sleep as has been noted in this thread as well? We know it is the Dell's causing this issue because once they got taken off the network things went back to normal.

 
For us, the issue only occurred while the PC was sleeping.  Once we identified the port where the traffic was originating we found the PC to be sleeping.  The issue would stop once awakening the PC.  We ended up disabling sleep on the PCs in question as well as unchecking the IPv6 settings in the NIC (though I'm not sure how the latter could have helped as I would assume that setting is only valid when the OS is running).  Anyway we haven't had the issue since with these machines on the network.
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Highlighted
jonflowers
1 Copper

RE: Opti 9020s with Intel I217-LM nics causing network issues

Same here, issue only while machines were sleeping. We have just unchecked the ipv6 settings and that seems to have done the trick. it was occurring 2 - 3 times a week, but has not reoccurred since disabling the ipv6 a couple of months back. 

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balkanman
1 Copper

RE: Opti 9020s with Intel I217-LM nics causing network issues

Apologies for the late response....yup, same NIC in an HP800 SFF model. We looked at the IPv6 traffic generated and found that computers are trying to locate network resources. Speaking with HP they advised that with AMP enabled each computer is meant to do a short discovery and then stop the spam.

Strange thing is that this is happening on only one of our sites so I suspect that IPv6 is not properly configured on that subnet which is why the network resources are not being discovered. Anyhow... disabling AMP fixed the issue for us on this particular site. Computers are now sleeping without any issues. 

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balkanman
1 Copper

RE: Opti 9020s with Intel I217-LM nics causing network issues

I meant "AMT" not "AMP" setting in BIOS...typo..

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gyang4
1 Copper

RE: Opti 9020s with Intel I217-LM nics causing network issues

I received a call from Dell Executive Escalations today, and pointed them to this forum post. As an update to my own situation, none of the machines we deployed have exhibited the problem in the time since October.

Both groups of machines did not have the problem anymore, so it appears that either unbinding IPv6 within windows or disabling the power management features for the NIC driver are both acceptable work-arounds until Dell figures out the root cause.

We did not apply any BIOS updates to new 9020s we've ordered and used the BIOS revision sent from the factory. I've been instructing our team to both disable IPv6 and disable the power management features (when available). Our imaging process loads the drivers from Dell's SCCM management pack, and it appears to take away the options that come with the factory driver.

On a side note, since I first encountered the problem, the team in charge of network operations campuswide has indicated to me that they have observed other departments on campus exhibiting the same problem with 9020s. I suppose I was probably one of the first departments to receive and deploy 9020s and the problem is just now becoming more widespread on campus as more people order them.

I will post here when Dell gets back to me or if I have new info.

-Gordon

[quote user="Mathetos"]

Glad to know I'm not crazy!  

I did resolve the issue by going to Adapter Properties, clicking Configure, and deselecting everything on the Power Management tab.  The nic no longer does anything when the system sleeps, and my network issues disappeared completely.  (Settings like the above mentioned "respond to ARP when asleep" etc.)  

That resolved my issues completely.  Hope that helps.  

It's a weird problem given that Intel nics are so common.  I wonder if we got a weird hardware issue.  

I have started applying the power management settings fix to my computers to see if it solves the issue. One other thing to note is that someone on our team disabled IPv6 as another troubleshooting step when we first started encountering the problems, and that seemed to work also.


Those computers still had the power management settings set at the default. So at this point, I have some computers that have IPv6 disabled but power management settings enabled, and other computers that have IPv6 enabled but power management settings disabled.


I will see if the problems come back on either groups of machines. I don't think either of these work-arounds are true solutions, since what if someone actually wants to use IPv6 or the power management features on these computers? In our environment its not a big deal yet, but it would be nice to narrow things down to the actual root cause.

Based on the notes from Dell about the BIOS A03 fixes, they seem to be actively working on the issue, so I hope there is some kind of answer soon (that won't also carry the risk of bricking the machine)

-Gordon

[/quote]

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gyang4
1 Copper

RE: Opti 9020s with Intel I217-LM nics causing network issues

I received a call from Dell Executive Escalations today, and pointed them to this forum post. As an update to my own situation, none of the machines we deployed have exhibited the problem in the time since October.

Both groups of machines did not have the problem anymore, so it appears that either unbinding IPv6 within windows or disabling the power management features for the NIC driver are both acceptable work-arounds until Dell figures out the root cause.

We did not apply any BIOS updates to new 9020s we've ordered and used the BIOS revision sent from the factory. I've been instructing our team to both disable IPv6 and disable the power management features (when available). Our imaging process loads the drivers from Dell's SCCM management pack, and it appears to take away the options that come with the factory driver.

On a side note, since I first encountered the problem, the team in charge of network operations campuswide has indicated to me that they have observed other departments on campus exhibiting the same problem with 9020s. I suppose I was probably one of the first departments to receive and deploy 9020s and the problem is just now becoming more widespread on campus as more people order them.

I will post here when Dell gets back to me or if I have new info.

-Gordon

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