Not able to get DHCP Snooping working on version 1.5.8

[bsanchez]

switch config.txt

(49.5 KiB) Downloaded 442 times

Has anybody else had any trouble getting DHCP Snooping to work on version 1.5.8

I cant seem to get it to work on a WS-26-400-IDC. I know that it only needs to be enabled on the interfaces that you dont want responding to any DHCP offers but when it wasnt working that way, I tried enabling it on the interface that faces the DHCP server but that didnt seem to work either.

I attached a copy of the switch config. And here is a brief video of the DHCP process working. Please let me know if I am doing something wrong.
https://vimeo.com/567541943/55d7a9c0d9

Thanks for your help.

[rcarstens]

@sirhc @Stephen

Can you assist us with this please? We have tried currently firmware and one older and it seems to have no affect either way.

[Stephen]

Hey sorry, afraid I missed this one earlier. This might be a bug but try this:

1. Enable DHCP Snooping on a port you want to prevent DHCP advertising on.
2. Save the config
3. Reboot the switch

Then check to see if it works.

*NOTE* if the procedure above DOES work, it is a bug, but it will at least give you a work around and me an idea of what I need to do to fix it.

[bsanchez]

Hello Stephen. Unfortunately rebooting the switch had no effect on the issue.

To be on the safe side, I reset the switch back to factory, reconfigured the switch, then rebooted the switch as instructed. But unfortunately after doing that, I was still able to get DHCP working on the ports where DHCP Snooping was enabled.

[Stephen]

Can you provide some more information about the DHCP Server?

[bsanchez]

The DHCP Server is an ASUS Router (RT-AC66U B1).

[Stephen]

Thanks, been added to the list of things to check.