TFTP Oddity - Works, but doesn't
Posted on 2008-06-11
This is strange. I have 2 subnet connected via a VPN tunnel between two Netopia R910 routers. The DHCP/TFTP server is on a Windows 2003 SBS on Network A. There is a PC on Network B that recieves its IP from the DHCP server on Network A (via DHCP relay on the R910 router). I can run tftp from the command line of the PC on Network B to the TFTP server on Network A and retrieve files all day long.
c:>tftp -i 10.0.1.10 get pxelinux.0 <--this works fine
However, if I try to boot a PC on network B using PXE, the pxelinux.0 file fails to get read. The TFTP log shows that the DHCP server tells the booting client to read the file, but then the read fails. I don't understand this. Is this a routing issue of some kind? The VPN tunnel does not NAT any traffic.
Any ideas appreciated.
Aaron J. Wood