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AP reboot to resolve DHCP issues

  • 1.  AP reboot to resolve DHCP issues

    Posted 12 days ago
    I have 3 Aruba IO access points - AP11, AP12 and AP15. After roughly 5 days, I need to reboot the access points in order to recover from clients not getting a DHCP address / renewal from my DHCP server. I replaced my Unifi access points with the Aruba APs about 2 months ago.

    I have the following setup:
    3 x APs
    HP 2930 PoE switch
    DHCP server running on Ubiquiti USG (tested it from PfSense DHCP server and pihole DHCP server, but getting similar issues).
    Clients varying from Windows, MacOS, Apple iPhones and IoT devices only using 2.4Ghz.
    The 3 access points are at the same spot on a floor, within a 3 storey house.
    I have not been able to do a tcpdump on the USG to see what happens when a client requests a DHCP address (and fail), as it always become noticeable during a critical point where the wireless service needs to be available.
    The SSIDs (4 different networks) are configured to be in bridge mode and to use the vlan assignment per network. Under normal circumstances, everything is working fine, but when a client does not get a DHCP address, rebooting the AP resolves the issue immediately.

    Because I cannot log into the access point itself (like you could with Unifi access points), I cannot see why it would not pass the DHCP requests between client and server. 

    How can I resolve / troubleshoot this?

  • 2.  RE: AP reboot to resolve DHCP issues

    Posted 12 days ago
    On your 2930 switch, make sure you have the VLAN's defined, and you have an IP helper-address pointing to your DHCP server for each VLAN. IF you are still having issues please reach out to support to assist in troubleshooting.

    Greg Thiesen

  • 3.  RE: AP reboot to resolve DHCP issues

    Posted 11 days ago
    Awesome, thank you for the quick response Greg. I'm going to configure it and test it the next couple of days (~5 days). If I'm still stuck then I'll contact the support team.

    Nico Rautenbach