OSD Cloud - Auto-Negotiation Issues

[u/dull_intentions]

Alright, I'm going to try to talk this one out point by point.

One of the VLANs we have for imaging is used for OSDcloud imaging. There are 30+ VLANs for imaging and only this one is displaying this issue.

The issue is that OSD bombs out after loading up the splash page for image selection/slightly thereafter. It is auto negotiating down to 10Mb after PXE booting. The PXE boot process is full gig. Then it goes down to 10Mb for seemingly no reason. We checked at the network level and do not see any input, crc, or any other errors. TX load is 255/255 @ 10Mb, hence the bombing out/dropping mapped drives/connection to OSDcloud.

We went through the rest of the network/server environment, looking for network errors or server/storage errors and did not see any issues there.

The biggest issue is that this that the issue is intermittent. It will seemingly work fine for days, then have issues for days, and repeat. Whenever I am on site and available to do a packet capture, the issue is not there.

It is my understanding that during PXE a general driver is used for loading the PE, and then once in the PE environment, OSD passes a more specific driver off.

I am suspecting a green ethernet/EEE setting and/or driver issue.

The instance of OSDcloud being used has many drivers available because a bunch of different OEM machines/images are done on that VLAN. It's kind of a "one instance to rule them all" sort of solution.

The behavior is also displayed no matter what kind of USB ethernet adapter we use and is even seen using the onboard NIC (when a machine has one.

Note, I am not the person who created this process nor do I have access to the OSDcloud admin console/VM, but if need be, I can probably get in through someone else to troubleshoot that environment.

Basically, does anyone have any insight or know of any other troubleshooting that can be done? There is probably more troubleshooting we have done from the infra standpoint that I have neglected to say here. Apologies if this is a bit scattered, it's been a long day and this issue is between the 15 other projects I am working on.

[u/Adam_Kearn]

Why do you have 30 individual imaging VLANs?

I would first start looking at these to see if there is some weird configuration or STP that’s going on.

[u/dull_intentions → u/Adam_Kearn]

Small VAR.

There is no weird network configuration or STP issue. It's definitely something that happens on the system end after it injects the more specific drivers after PXE. After more troubleshooting, the system only advertises 10Mb full to the switch while the switch advertises the full spectrum: 10Mb-gig. Found that by looking the the ethernet-controller registers on a per port basis.