1-6z In the case that the PSE processing software is damaged (that is, no PoE command can beexecuted successfully), use the full update mode to upgrade and thus restore the software.z The refresh update mode is to upgrade the original processing software in the PSE throughrefreshing the software, while the full update mode is to delete the original processing software inPSE completely and then reload the software.z Generally, the refresh update mode is used to upgrade the PSE processing software.z When the online upgrading procedure is interrupted for some unexpected reason (for example, thedevice restarts due to some errors), if the upgrade in full mode fails after restart, you must upgradein full mode after power-off and restart of the device, and then restart the device manually. In thisway, the former PoE configuration is restored.Displaying and Maintaining PoE ConfigurationTo do… Use the command… RemarksDisplay the PoE status of a specificport or all ports of the devicedisplay poe interface[ interface-type interface-number ]Display the PoE power informationof a specific port or all ports of thedevicedisplay poe interface power[ interface-type interface-number ]Display the PSE parameters display poe powersupplyAvailable in any viewPoE Configuration ExamplePoE Configuration ExampleNetworking requirementsAs shown in Figure 1-1, Switch A supports PoE, Switch B can be PoE powered.z The GigabitEthernet 1/0/1 and GigabitEthernet 1/0/2 ports of Switch A are connected to Switch Band an AP respectively; the GigabitEthernet 1/0/8 port is intended to be connected with animportant AP.z The PSE processing software of Switch A is first upgraded online. The remotely accessed PDs arepowered by Switch A.z The power consumption of the accessed AP is 2,500 mW, and the maximum power consumptionof Switch B is 12,000 mW.z It is required to guarantee the power feeding to the PDs connected to the GigabitEthernet 1/0/8 porteven when Switch A is under full load.
