How do I set up Auto PD Recovery on nebula?

Zyxel_HsiuTe

The crash/hang on surveillance devices (ex: IP camera) can usually be recovered by just a reboot. PoE feature “Auto PD Recovery” which offers a way to restart malfunctioning PDs from Zyxel Switch (PSE) to reduce service-down time by sending a field engineer to troubleshoot the live site. Additionally, this feature ensures the reliability of network by preventing situations where PDs are suddenly no longer working.

Note:

To check which Switch models support Auto PD Recovery, log in to Zyxel Nebula, go to the top right corner, click More > Help, scroll down to select Device Function Table, and switch to the Switch Table section.

Since Auto PD Recovery is configured in the Port settings, here we take Port 1 of the GS1350-6HP as an example. Please replace the example switch and port with the actual switch and PD-connected port you are using.

After logging in to Nebula, navigate to Site-wide > Configure > Switches > Switch Ports, and Click Port 1 of the GS1350-6HP. Then, click Configuration on the Port 1 interface to edit the settings.

Scroll down to the PoE Setting Area and enable Auto PD Recovery.

The detection mode feature offers two options.

1) Ping mode: Detect the PD status by performing ping requests.

The ping mechanism uses the switch's default management IP address to communicate with the designated port. Therefore, the designated port must share the same VLAN as the switch's management VLAN to successfully ping and monitor the IP camera or PD.

2) LLDP mode: Monitor LLDP packets from the PD.

Switch monitors the PD status by checking incoming LLDP packets every 30 seconds (default value of transmit interval for LLDP feature) from the PD.

The Action offers two options.

1)Reboot-Alarm: The Nebula Device send an SNMP trap and generate a log message, and then turn off the power of the connected PD and turn it back on again to restart the PD.

2)Alarm: The Nebula Device send an SNMP trap and generate a log message.

Neighbor IP: Only when select Ping mode in detection mode. Set the IPv4 address of the Powered Device (PD) connected to this port.

*If Detecting Mode is set to Ping and the PD supports LLDP, the connected PD’s IPv4 address to which the Nebula Device sends ping requests is displayed automatically.

Polling interval (sec): Only when select Ping mode in detection mode. Specify the number of seconds the Nebula Device waits for a response before sending another ping request. For example, the Nebula Device will try to detect the PD status by performing ping requests every 20 seconds.

Polling count: Only when select Ping mode in detection mode. Specify how many times the Nebula Device resends a ping request before considering the PD unreachable.

Resume polling interval (sec): Specify the number of seconds the Nebula Device waits before monitoring the PD status again after it restarts the PD on the port.

1. If you select LLDP mode in detection mode, switch will check the LLDP table every 600 seconds (default value of Resume Polling Interval). If the PD entry disappears (default LLDP table aging time: 120 seconds) in switch’s LLDP table, the switch will perform the reboot-alarm action (default action) to reboot the PD.
2. If you select Ping mode in detection mode, switch will perform a ping request after 600 seconds (based on the default recovery polling interval) to resume detecting the PD's status.

PD reboot count: The number of times that the switch can make the PD reboot is also a configurable value. If the times that the switch tries to reboot the PD reaches the value, the switch will no longer try rebooting the PD even if the polling count is reached until the PD reboot count be reset.

The PD Reboot Count resets if any of the following conditions are true:

1. The Nebula Device successfully pings the PD.
2. You modify any Auto PD Recovery settings and apply them.
3. The Nebula Device restarts.

Resume power interval (sec): Specify the number of seconds the Nebula Device waits before supplying power to the connected PD again after it restarts the PD on the port.

*When upgrading the firmware of a camera/PD, it is strongly recommended to disable the Auto PD Recovery feature during the process, as power interruptions during a firmware upgrade may damage the camera/PD.