Why do we get "Unknown Transfer ID" when PXE booting?

Products

• Deployment Solution

Issue/Introduction

When attempting to boot our computers to PXE for imaging, you get a DHCP request prompt, and then quickly receive an error "Unknown Transfer ID" and a "PXE-E05" error.  What does this mean?

Environment

DS 8.x

Cause

This is part of the MTFTP protocol, and is a standard error as found in the RFC per the following table:

 Error Codes

   0         Not defined, see error message (if any).
   1         File not found.
   2         Access violation.
   3         Disk full or allocation exceeded.
   4         Illegal TFTP operation.
   5         Unknown transfer ID.
   6         File already exists.
   7         No such user.

There is supposed to be an "appendix" somewhere that discusses this error.

What was found, however, from the MTFTP logging was an error finding the BSTRAP.0 file.  Looking at the images folder, it was discovered that folder missing, though it was in the master images folder, which would explain the error in the MTFTP logs.

Resolution

As a temporary workaround, manually copy the bstrap folder from master images to the images folder, and imaging worked fine.  For a "fix" though, you'll need to find out why those folders are not kept up-to-date automatically.