ZyXEL Communications XMG1930-30 User Manual page 217

Figure 141 Auto PD Recovery (Ping Mode)
Figure 142 Auto PD Recovery (LLDP Mode)
Select the desired ports in the Active column.
2
Select the Mode.
3
When you select Ping, the connected PD's IPv4 or IPv6 address to which the Switch sends ping requests
will display automatically if the PD supports LLDP. If not, enter the IP address of the PDs in the Neighbor IP
field.
The default setting for Polling Interval (sec) (20 secs) and Polling Count (3 times) will cause the Switch to
ping the PD status every 20 seconds. If there is no ping reply from the PD, Polling Count starts to count
from 1. Once Polling Count reaches 3, the Switch will cause a Reboot-Alarm on the PD as selected in
Action.
When you select LLDP, the Switch monitors the PD status by checking incoming LLDP packets every 30
seconds from the PD (default value of transmit interval for LLDP feature).
Likewise, the Switch sends out LLDP packets to the PD every 30 seconds to update the MONITOR >
Neighbor screen.
Chapter 31 Auto PD Recovery
XMG1930 Series User's Guide
217