We’ve been running into an issue lately with devices losing their IP address and becoming unavailable. It occurrs intermittently, sometimes days/weeks go by with no problems, but then we suddenly lose half the devices in a site. The only thing that seems to fix the problem is going into the DHCP client list, and unbinding a MAC address (usually we only need to unbind one). Once we do this, all the other devices come back online.
This is occurring on a 6510, with GXP2135s and GXP2170s. It’s happened over multiple firmware versions. Any ideas what could be causing this issue?