DHCP snooping & PXE server

zvondovec · ‎11-26-2009

Hi,

Did anyone solved this scenario?

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DHCP server -----------| ASA | ------------------------------ stations + PXE server

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1) when DHCP snooping is off, everything works fine - PXE client receives address from DHCP server and also address of PXE server

2) when I turn on DHCP snooping, PXE client receives IP address from DHCP server, but doesn't know about PXE server

Modification of parameters 66,67 in DHCP server didn't help - client located PXE server, but stopped on loading bootwiz.sys and timeouted.

Thank you.

Giuseppe Larosa · ‎11-26-2009

Hello,

preliminary question:

have you tried to trust the port where the PXE server is connected?

second question:

what switch model is involved and what IOS image is running?

I remember threads where some SW bugs related to PXE and DHCP snooping have been mentioned.

Having this information would help to narrow the search in bug toolkit tool.

I can confirm that there were issues for some switches with specific IOS versions

Hope to help

Giuseppe

zvondovec · ‎11-26-2009

Hi,

1) of course I did - didn't help

2) c2960-lanbasek9-mz.122-52.SE.bin

thanks