SNMP sysUpTimeInstance limit

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sysUpTimeInstance 是 32bit 的 counter, 設備的開機時間是以 0.01 秒為單位,
能顯示最大的開機時間是 (2^32-1)/100=42949672.95 = 497 days 2:27:52.95
當設備開機超過這個時間, 32bit counter 就會 loop

替代的方式是抓 snmpEngineTime.0, 這是指 snmpEngine 的 uptime, 單位秒,
通常等同開機時間, 除非 SNMP 服務有被重啟

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This page contains a single entry by Pank published on July 10, 2014 12:54 AM.

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