This read-only counter reports how many frames were discarded because they exceeded the maximum allowed transit delay while crossing the bridge. An administrator monitors it to detect frames that are taking too long to traverse the bridged network, which can indicate congestion or a misconfigured transit-delay threshold. For example, a sudden rise in statBridgeBridgeFrameTimeout during peak hours would lead an administrator to suspect the bridge is overloaded and frames are queuing longer than the configured timeout permits.