Help with WS-12-AC dropping DHCP packets

[CITS]

Hi All, i have just replace all my UBNT radios with a Mimosa A5 and C5's (9 links) and replaced tough switches with WS-12-250-AC running firmware 1.4.7rc14
my setup is wifi to a campsite, i am having an issue with clients not getting DHCP addresses..... this is random.... i have a laptop in the one building connected by wireless to a "UBNT outdoor plus" ---> WS-12--->Mimosa C5 --->Mimosa A5---> UBNT edgeswitch ---> Cyberoam UTM firewall.

i have wireshark on laptop and see the discover packets sent, i see them hit the Cyberoam DHCP (packet capture on cyberoam) but 8 times out of 10 i don't see an offer or request.

i am not blaming the Netonix in any way..... but am asking if there is anyway to run a capture from WS12 or look at dropped traffic......

when i look at the port stats for port 1, Mimosa C5 link i see high "Receive error Counters" 83382 and "RxFiltered" 16. not sure what would cause this, or if these are dhcp packets.

Thanks in advance
Steve

[mike99]

Maybe use port mirroring to a laptop with wireshark. Also, you could look if DHCP snooping is enable on the netonix.

[CITS]

Hi thanks for the reply, the switch is 250 miles away..... so could do with a remote solution.. what will dhcp snooping give me...? thought that would just none authenticated DHCP servers...

[sirhc]

No, sorry there is no way to do a remote capture with the Netonix.

Could you post up your Ports Tab.

[mike99]

If enable, it could block dhcp. That why writed you could look if it was enable.

[mike99]

You could use port mirroring to a router that could analyse traffic (tcpdump, torch on a Tik, etc.) if you have a router on site.

[CITS]

Sorry for the late reply.... i had to travel to the site. I ended up removing the Netonix switches from the network..... i still have the issue so i am ruling out my netonix switches. It would appear to be the Mimosa A5 and C5's.

Thank You for your responses.