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The ConneXium ring managed switch (499NxSx7100 model) sends out proprietary Bridge Protocol Data Unit (BPDU) messages every 20ms as a ring integrity heartbeat. Should a failure be detected, the minimum heal time is 2 BPDU cycles or 40ms for 2 ConneXium switches. Note that additional switches will increase the heal time accordingly due to latency but will range no more than 500ms in a maximum configuration of 50 switches.