Hello All,
I am a complete newbie in networking and request your help in identifying the likely cause of this issue :
ISSUE: In a specific Adsite PC’s are unable to PXE-boot from the network after pressing F12. It appears to contact DHCP, and finally fails 10 minutes later with : “PXE:E55 ProxyDHCP service did not reply to request on Port 4011”
I tried portqry.exe to test the port as follows :
* portqry.exe -n 10.20.30.40 -e 68 -p udp -sp 4011
- I understand portqry sends a dummy packet to host (-n) at port (-e) from port(-sp) using protocol (-p)
- 10.20.30.40 is a random PC in some other Adsite
* Wireshark captures packets at 10.20.30.40;
* when portqry.exe executed from :
(a) WDS server (boot image server) : No packets were received by 10.20.30.40
(b) a random XP PC in same subnet of WDS server : No packets were received by 10.20.30.40
(c) a random server from ANOTHER Adsite : UDP Packet received fine.
* If I change the portqry.exe protocol from udp to tcp, then packet is received fine from all WDS/XP/Server above.
* WDS server is windows server 2008 R2; firewall on this server is disabled.
* HP Switches
* The PC to be PXE imaged and server are in the same subnet.
With the above information, would it be possible to determine the likely cause? Please help.