step1:检查和备份
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4507R#write
4507R#copy running-config tftp
4507R#show module
4507R#show redundancy
4507R#show bootvar
4507R#dir
step2:上传IOS到设备
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4507R#copy tftp:bootflash:
4507R#dir bootflash:
4507R#redundancy force-switchover
4507R#show bootvar
4507R#no boot system flash:旧的IOS名
4507R#boot system flash:cat4500es8-universalk9npe.SPA.03.08.05.E.152-4.E5.bin
4507R#wirte
4507R#reload
step3:检查升级
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4507R#show version
4507R#copy sup-bootflash:bootflash:
4507R#redundancy force-switchover
4507R#show bootvar
4507R#no boot system flash:旧的IOS名
4507R#boot system flash:cat4500es8-universalk9npe.SPA.03.08.05.E.152-4.E5.bin
参考命令：
4507R# copy tftp://192.168.1.1/cat4500es8-universalk9npe.SPA.03.08.05.E.152-4.E5.bin bootflash:
4507R(config)#boot system flash bootflash:cat4500es8-universalk9npe.SPA.03.08.05.E.152-4.E5.bin
4507R#write
4507R#verify flash:cat4500es8-universalk9npe.SPA.03.08.05.E.152-4.E5.bin
4507R#hw-module module 4 reset
POE查看命令
4507R#show power inline
4507R#power inline consump
4507R#power inline never