PXE-E51 not resolved with Port-Fast enabled
I’ve been using FOG 0.32 for the past two years, and it’s a great piece of software. Recently I’ve run into issues with certain machines failing to connect to the server or PXE boot, and[SIZE=2] providing the PXE-E51 “No DHCP or DHCP Proxy Offers received” error. I’ve [/SIZE]referred[SIZE=2] to both the thread on the forums /SIZE as well as additional research in an attempt to resolve it, and have failed to do so. I do recognize this as an issue with my network and hardware rather than FOG itself.
I’m currently running a Cisco Catalyst C2980G-A managed switch; in an attempt to fix this issue I’ve reset the device to the factory default, enabled Port-Fast on my specified test port, verified that Port-Fast is enabled, and then connected the machine. Watching the terminal I see that the computer connects to the switch, but there is still a delay in the connection, and it then fails to boot to PXE. When I replace the Cisco unit with a Netgear ProSafe GS108 unmanaged switch the machine connects to the server and PXE boots instantly.
Can anyone make any suggestions as to what I may be doing wrong? Would switch speed have anything to do with it (Cisco is 10/100 and Netgear is Gigabit)?
Thanks for letting us know what fixed it for you, we may be able to suggest this to other users now!
I appreciate the response, Jaymes. While the commands within the guide did not work for me I was able to resolve my issue by disabling trunking on the port as well. Granted it takes a few more seconds to connect than the Netgear, but it works no less.
I doubt that the 10/100 would cause you any connectivity issues. It may slow your imaging down, but it should NOT be preventing you from receiving your files. I use some old Cisco switches that are 10/100 and they work fine with FOG. But I also use DNSMASQ in my environments.
I have similar issues though with managed switches. My Cisco switches are Catalyst 2960-S and they tend to take quite some time for my machines to boot, unless I enable port fast, then they boot within a few seconds. If I use an unmanaged switch things are usually much smoother and faster, though I am not sure why.
The only other thing that I have enabled on my switches is the IGMP Snooping.
I set my switches up with the following guide: [url]http://fogproject.org/forum/threads/cisco-programming-guide.10856/[/url]
I feel it should be stated, the experience I have with Cisco switches are all self taught/playing with settings. I am not a Cisco engineer and I never claim to be!
The switch continues to work with older devices such as the Dell Latitude D600, D610, D620 and D630 but does not work with the HP EliteBook 8440p. When I replace the switch with the Netgear switch the EliteBook 8440p connects flawlessly, and instantly. I verified that Port-Fast was enabled on the Cisco, but it’s not making any difference; could it be an issue that the Cisco is 10/100 and the Netgear is Gigabit?
Tom Elliott last edited by
So, if I’m reading this right, all was working then stopped?
Maybe the reset of the switch is blocking traffic on UDP 69?