1-9Upgrading PSE Processing Software in ServiceYou can upgrade the PSE processing software in service in either of the following two modes:z refresh modeThis mode enables you to update the PSE processing software without deleting it. Normally, you canupgrade the PSE processing software in the refresh mode through the command line.z full modeThis mode deletes the PSE processing software and reloads it. If the PSE processing software isdamaged (in this case, you can execute none of PoE commands successfully), you can upgrade thePSE processing software in full mode to restore the PSE function.In-service PSE processing software upgrade may be unexpectedly interrupted (for example, an errorresults in device reboot). If you fail to upgrade the PSE processing software in full mode after reboot,you can power off the device and restart it before upgrading it in full mode again. After upgrade, restartthe device manually to make the new PSE processing software take effect.Follow these steps to upgrade the PSE processing software in service:To do… Use the command… RemarksEnter system view system-view —Upgrade the PSE processingsoftware in servicepoe update { full | refresh }filename RequiredDisplaying and Maintaining PoETo do… Use the command… RemarksDisplay PSE information display poe deviceDisplay the power supply state of thespecified PoE interfacedisplay poe interface[ interface-typeinterface-number ]Display the power information of aPoE interface(s)display poe interface power[ interface-typeinterface-number ]Display the information of PSE display poe pseDisplay all information of theconfigurations and applications of thePoE profiledisplay poe-profile [ indexindex | name profile-name ]Display all information of theconfigurations and applications of thePoE profile applied to the specifiedPoE interfacedisplay poe-profile interfaceinterface-type interface-numberAvailable in any viewPoE Configuration ExampleNetwork requirementsAs shown in Figure 1-2,
