我在 ASA 上启用了 SLA 监视器，我想知道 RTTSum 和 RTTSum2 指标代表什么？

RTT 代表“Rout Trip Time” 我在弄清楚 RTTSum 实际代表什么时遇到了麻烦，我将如何阅读它并将其应用于故障排除？

Modification time: 16:46:11.982 EST Mon Sep 16 2013
Number of Octets Used by this Entry: 1480
Number of operations attempted: 197
Number of operations skipped: 0
Current seconds left in Life: Forever
Operational state of entry: Active
Last time this entry was reset: Never
Connection loss occurred: FALSE
Timeout occurred: FALSE
Over thresholds occurred: FALSE
Latest RTT (milliseconds): 10
Latest operation start time: 17:18:51.982 EST Mon Sep 16 2013
Latest operation return code: OK
RTT Values:
RTTAvg: 10  RTTMin: 10  RTTMax: 10
NumOfRTT: 3 RTTSum: 30  RTTSum2: 300

另一个例子

Number of Octets Used by this Entry: 1480
Number of operations attempted: 243
Number of operations skipped: 0
Current seconds left in Life: Forever
Operational state of entry: Active
Last time this entry was reset: Never
Connection loss occurred: FALSE
Timeout occurred: FALSE
Over thresholds occurred: FALSE
Latest RTT (milliseconds): 13
Latest operation start time: 17:26:31.992 EST Mon Sep 16 2013
Latest operation return code: OK
RTT Values:
RTTAvg: 13  RTTMin: 10  RTTMax: 20
NumOfRTT: 3 RTTSum: 40  RTTSum2: 600

谢谢