Hey,

 Lately I started experiencing a slow download speed in OSD. I managed to fix the slowness for the wim download with KB2905002 hotfix, but downloading drivers is still very slow.

Any Ideas or suggestions ?? 

Slow means ? Minutes, hours ?

Is this an Auto Apply Step or Driver Package ?

Check your SMSTS.log during the downloading phase to see more details.

Check CAS.log too, it could be possible that some content is downloading from a nearby DP, while other content is being downloaded from afar

It use to take 5-10 min. Now its taking 45-1 hr. Its a Driver Package. I checked the CAS.log there is no errors it only says "User policy requested with no user credentials" "Invalid user" and its the local DP. The smsts.log shows no errors. The only thing I changed is I stopped the machine from joining the domain.

Download location found 0 - http://<DP_NAME>/SMS_DP_SMSPKG$/0151d9cf-a409-4013-b00a-6f915096b410    ContentAccess    16/01/2014 9:27:11 AM    3012 (0x0BC4)
Download location found 1 - http://<DP_NAME>/SMS_DP_SMSPKG$/0151d9cf-a409-4013-b00a-6f915096b410    ContentAccess    16/01/2014 9:27:11 AM    3012 (0x0BC4)

Can you search for Download location in your CAS.log and confirm content is downloading from the DP that you expect?

I already did that and its downloading from the local DP.

In smsts.log can you see whether the detected network driver matches your hardware?

Just a note, do you know that the KB you installed has been superseded by 2910552 ?

Yes it matches the hardware, and the issue that I am facing is not only on that specific machine its on any machine I pxe. I also noticed that the download of the MDT files is very slow also, in other words anything other than the .wim file is super slow. Yes I am aware of that, I applied 2910552.

Is it possible that you're actually getting the PXE response from a DP elsewhere? Have you reviewed the smspxe.log file on your expected DP and seen the session with your test workstation?

Is it possible that you're actually getting the PXE response from a DP elsewhere? Have you reviewed the smspxe.log file on your expected DP and seen the session with your test workstation?

PXE has nothing to do with driver delivery. Drivers come from a DP using the normal content distribution process just like everything else in the TS. The only thing delivered by PXE is the boot image.

Have you reviewed the IIS.log files on the DP where the driver files are being downloaded from? Have you tried temporarily enabling anonymous authentication on the DP?

Do you have Fall back turned on your dp's?  you might have an issue with one of your dp's and it is causing traffic from remotes agent causing traffic network.     Put a Traffic monitor on your DP and see what going on.

Check if you have a Bandwidth Limit set in your IIS configuration on your DP ?

http://www.systemcenterdudes.com/sccm-2012-slow-distribution-point/

Hows the transfer speeds outside of SCCM?  Just plain ole file copies, are they also slow?

Have you resolved this issue yet? In addition to all the other suggestions, were there any changes to your infrastructure that might have impacted your site server or distribution point?

If the DP and/or site server are virtualized on VMware, I've seen some issues resolved by moving away from the E1000 NIC and using the VMXNET3 NIC instead.  This is just one area to look at. . .

Jeff

I ended building up a new SCCM and did a side by side migration to it. I was using VMXNET3 NIC.