This counter tracks how many times the session between the local CEF process and this specific CEF peer entity has been reset. A steadily climbing value points to an unstable peer relationship, such as repeated IPC failures or reloads between a route processor and a line card's forwarding engine, which can cause intermittent forwarding table inconsistencies even if traffic never fully stops. Seeing this counter jump from 2 to 15 in an hour on a specific line card's peer entry would tell an admin that card is flapping its CEF session, worth checking for a hardware or software fault on that slot.