Chapter 31 Auto PD Recovery
XGS2220 Series User’s Guide
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31.2.1 Activate the Automatic PD Recovery
Follow the steps below to activate the automatic PD recovery.
1 In the PORT > Auto PD Recovery screen, activate the feature.
Polling Count Specify how many times the Switch is to resend a ping request before considering the PD
unreachable.
For example, If there is no ping reply from the PD after the Polling Interval (sec) has elapsed,
Polling Count starts from 1. After Polling Count reaches 3, the PD Health status LED will turn to
red in the MONITOR > Neighbor screen. The Switch will then perform your choice in the Action
field.
Action Set the action to take when the connected PD has stopped responding.
Select Reboot-Alarm to have the Switch turn OFF the power of the connected PD (the
connecting port is detected as link-down) and turn it back ON again to restart the PD after
sending an SNMP trap and generating a log message.
When restarting, the PD entry disappears from the Switch’s LLDP table and the PD Health
status LED will turn to yellow in the MONITOR > Neighbor screen.
Select Alarm to have the Switch send an SNMP trap and generate a log message.
Resume Polling
Interval (sec)
Specify the number of seconds the Switch waits before monitoring the PD status again after it
restarts the PD on the port.
PD Reboot Count Specify how many times the Switch attempts to restart the PD on the port.
The PD Reboot Count will reset
• as soon as a ping is successful,
• or when any modification to the Auto PD Recovery screen is applied,
• or after restarting the Switch.
Resume Power
Interval (sec)
Specify the number of seconds the Switch waits before supplying power to the connected PD
again after it restarts the PD on the port.
Apply Click Apply to save your changes to the Switch’s run-time memory. The Switch loses these
changes if it is turned off or loses power, so use the Save link on the top navigation panel to
save your changes to the non-volatile memory when you are done configuring.
Cancel Click this to reset the values in this screen to their last-saved values.
Table 97 PORT > Auto PD Recovery (continued)
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