网络工程 - 在 show version 输出中两个不同的重新加载时间意味着什么？ - 吾爱随笔录

我们正在从命令行重新启动几个 ASR920（以升级 IOS），并且一开始有几个未能重新启动。这两个对于returned to ROM和的时间非常不同restarted。这两个不同的时间代表什么？关于重新加载的问题，我能收集到什么信息？

System returned to ROM by reload at大多数重新加载的路由器看起来像这样，在和之间有大约 20 分钟的差异System restarted at：

router-i uptime is 1 day, 15 hours, 58 minutes
Uptime for this control processor is 1 day, 16 hours, 0 minutes
System returned to ROM by reload at 22:07:27 PDT Mon Aug 21 2017
System restarted at 22:25:42 PDT Mon Aug 21 2017
System image file is "bootflash:asr920-universalk9_npe.03.16.05.S.155-3.S5-ext.bin"
Last reload reason: PowerOn

但没有马上回来的两人，却有着不小的时代差距。6小时以上：

router-a uptime is 1 day, 8 hours, 2 minutes
Uptime for this control processor is 1 day, 8 hours, 4 minutes
System returned to ROM by reload at 23:51:28 PDT Mon Aug 21 2017
System restarted at 06:34:37 PDT Tue Aug 22 2017
System image file is "bootflash:asr920-universalk9_npe.03.16.05.S.155-3.S5-ext.bin"
Last reload reason: PowerOn

超过7小时：

router-c uptime is 7 hours, 24 minutes
Uptime for this control processor is 7 hours, 26 minutes
System returned to ROM by reload at 00:04:41 PDT Wed Aug 23 2017
System restarted at 07:12:28 PDT Wed Aug 23 2017
System image file is "bootflash:asr920-universalk9_npe.03.16.05.S.155-3.S5-ext.bin"
Last reload reason: PowerOn