I want to know "AP Restart : power cycle" cause

[phyo_pyi_thit]

Hi everyone,
My ZD 3000 was connected with 50 AP ZF 7372. It was not stable. When i check the debug log i found out following. Please suggest me what those mean and how can i fix it.

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Aug 23 18:42:29
WLC01 syslog: eventd_to_syslog():AP[L1AP6@2c:5d:93:3c:1f:a0] detects interference on radio [11g/n] and switches from channel [7] to channel [9].

Aug 24 07:55:19 WLC01 syslog: eventd_to_syslog():AP[L1AP6@2c:5d:93:3c:1f:a0] heartbeats lost

Aug 24 08:15:07 WLC01 syslog: eventd_to_syslog():Lost contact with AP[L1AP6@2c:5d:93:3c:1f:a0]

Aug 24 08:19:21 WLC01 syslog: eventd_to_syslog():AP[L1AP6@2c:5d:93:3c:1f:a0] joins with uptime [67] s and last disconnected reason [AP Restart : power cycle]

Aug 24 08:19:24 WLC01 syslog: eventd_to_syslog():AP[L1AP6@2c:5d:93:3c:1f:a0] cold boot successfully

Aug 24 08:19:24 WLC01 syslog: eventd_to_syslog():AP[2c:5d:93:3c:1f:a0] is online.

Aug 24 08:35:15 WLC01 syslog: eventd_to_syslog():AP[L1AP6@2c:5d:93:3c:1f:a0] heartbeats lost

Aug 24 08:35:40 WLC01 syslog: eventd_to_syslog():AP[L1AP6@2c:5d:93:3c:1f:a0] joins with uptime [67] s and last disconnected reason [AP Restart : power cycle]

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[andrea_coppini]

That is impossible, you might be pinging the wrong IP. The AP rebooted so there had to be a minute or so of disconnection for sure.

As I said, if it's powered by POE, check the logs of the switch and also test the cable. Make sure it's not longer than 60m if CAT5/E or 80m if CAT6

[seanmuir]

A 802.3af PoE port delivers 15.4W and is meant to be able to deliver at least 12.95W of power to the end device.

Also if you are running a longer cable, you can use the Microsemi PoE extender to increase your cable run up to 500m:

http://www.microsemi.com/products/poe-systems/poe-extender

[seanmuir]

Increase the heartbeat timeout value to the AP to be something like 30mins.

When the network is under load the heartbeat to the AP can get lost and if the AP is constantly busy it will reboot based on your settings.

[thanaphom]

What causes "AP Restart: power cycle detected"?