Netgear XCM8806 Chassis User Manual - Page 176

NETGEAR 8800 User Manual The default value is deny-port. So, if you do not change the default value and the switch's or slot's power is exceeded, the next PD requesting power is not connected (even if that port has a higher configured PoE port priority than those ports already receiving power). When you configure the deny-port value, the switch disregards the configured PoE port priority and port numbering. When the switch is configured for lowest-priority mode, PDs are denied power based on the individual port's configured PoE priority. If the next PD requesting power is of a higher configured PoE priority than an already powered port, the lower-priority port is disconnected and the higher-priority port is powered. To configure the disconnect precedence for the switch, use the following command: configure inline-power disconnect-precedence [deny-port | lowest-priority] To reset the disconnect precedence value to the default value of deny port to the switch, use the following command: unconfigure inline-power disconnect-precedence PoE Port Priority On the NETGEAR 8800 switches, you can configure the PoE priority for each port as low, high, or critical; the default value is low. If you configure the disconnect precedence of the switch as lowest priority, the switch disconnects those PDs with lower PoE port priorities when the reserved switch or slot power budget is exceeded; the system continues supplying power to PDs with higher PoE port priorities. To set the PoE port priority, use the following command: configure inline-power priority [critical | high | low] ports To reset the PoE priority of the ports to the default value of low, use the following command: unconfigure inline-power priority ports [all | ] If several PDs have the same configured PoE port priority, the priority is determined by the port number. The highest port number has the lowest PoE priority. The switch withdraws power (or disconnects) those ports with the highest port number (s). That is, the highest port number is the lowest PoE priority. Port Disconnect or Fault On modular PoE switches, when a port is disconnected, the power is removed from that port and can be used only by ports on the same slot. The power from the disconnected port is not redistributed to any other slot. On all PoE devices, when a port enters a fault state because of a class violation or if you set the operator limit lower than the amount requested by the PD, the system removes power from that port. The power removed is, again, available only to other ports on the same slot or stand-alone switch; it cannot be redistributed to other slots on modular switches. The port 176 | Chapter 7. PoE