(Some) DHCP Request Packets Dropped By Wireless System

[Theodore_Chandl]

I have a device on the wireless that is having issues obtaining a DHCP address. During the troubleshooting I performed a packet capture from the wireless controllers GUI. I found that the DHCP packets from the client were being dropped by the access point. Unfortunately I have not been able to determine the reason for the drops.

Does anyone know if there is a way to log dropped packets? I already have a syslog server logging a few other events.

Other information that might be relevant:
Version: 5.9.1.2-006R
AP Types: 7502 7532 8533

[aholden]

hi

you can log into the CLI on the AP and enter "service pktcap on drop filter port 67 and port 68

This will capture any dropped DHCP messages

You may want to check that your firewall is following BEST PRATICES. The DOS firewall may mis-identify packets as harmful and drop them

[Philipp_Tittman]

Hi Andy,

do you guys have a kind of cheat sheet for more commands like you mentioned?
Thx