Thursday, October 4, 2018

PXE Boot slow, transfer speeds okay?

Hi all,

I'm the sys admin at a computer manufacturing place. We're having a problem where our two deployment servers are PXE booting at 650MB boot.wim incredibly slow. The servers are both Server 2016 x64. I'm not sure where else to look to find out where this problem is happening so here's what I know so far:

  • The problem only occures on physical hardware, not virtual. Virtaul machines are fine for deployment
  • Transfering files from network shares are unaffcted
  • Changed the TFTP Block Size to different values, no difference made
  • Power cycling the switches & servers & router had no effect
  • Replacing switches had no effect
  • Checked the link speed, it's 1gbps
  • Tried a different boot.wim file, no change
  • Restarted the WDS Service, no change
  • Recreated the NIC teams, no change
  • RAID array is fine

The only error I have found is "The following client failed TFTP Download, error code 1460". As far as I know error code 1460 is a timeout error where the server has cut the connection.

I have a feeling the problem is hardware related, as the deployment servers can serve virtual hosts fine. Not sure where else to look for a solution?



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