This read-only Counter32 tallies memory errors encountered by the device while processing a received CDP packet, adding a neighbor entry, or sending a CDP packet. An administrator watches this counter as a sign of resource exhaustion affecting the CDP subsystem specifically, which could correlate with an oversized or unstable neighbor table. For example, if this counter rises during a period when many new devices were connected at once, the admin suspects the CDP neighbor table hit a memory limit and investigates reducing table size or increasing device resources.