Show tech command in H3C
Normally we use " show tech " (show tech-support) command to gather ALL the information from a switch or a router. This applies to all Cisco networking devices as well as HP Procurve switches (I don't know about other vendors). The show tech command in H3C is display diagnostic-information . It does exactly the same thing as show tech, except that it will ask you if you want to save the output in a file [(inside flash), so that you can copy it using tftp], or display it on screen (as usual).