Technical difference between power cycle vs. reboot

Answered Question
Nov 5th, 2009

Folks, if you remove power cable from a device, then connect power cable back in that is a power cycle.

Then from a Cisco switch if you issue the 'reload' command, the device would "reboot".

Question:As far as getting memory cleared, do you see any difference between the two? I heard in the past that some devices may not get the memory cleared unless you power cycle (what it does not make sense to me, but I just want to confirm).

I have this problem too.
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Correct Answer by Lucien Avramov about 7 years 3 weeks ago

Reboot from CLI is more clean than a brutal power cycle.

If you do a warm reboot, then it will not clean all the memory as the warm reboot is made to restart the router in a few seconds.

To answer your question, a reboot should have the same effect as a power cycle as far as memory clearing.

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Correct Answer
Lucien Avramov Thu, 11/05/2009 - 10:28

Reboot from CLI is more clean than a brutal power cycle.

If you do a warm reboot, then it will not clean all the memory as the warm reboot is made to restart the router in a few seconds.

To answer your question, a reboot should have the same effect as a power cycle as far as memory clearing.

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