> show ? 查看一些具体的内容

　　Possible completions:

　　accounting           Show accounting profiles and records

　　aps                  Show Automatic Protection Switching information

　　arp                  Show system Address Resolution Protocol table entries

　　as-path              Show table of known autonomous system paths

　　bfd                  Show Bidirectional Forwarding Detection information

　　bgp                  Show Border Gateway Protocol information

　　chassis              Show chassis information

　　class-of-service     Show class-of-service (CoS) information

　　cli                  Show command-line interface settings

　　configuration        Show current configuration

　　connections          Show circuit cross-connect connections

　　dhcp                 Show Dynamic Host Configuration Protocol information

　　dvmrp                Show Distance Vector Multicast Routing Protocol information

　　dynamic-tunnels      Show dynamic tunnel information information

　　esis                 Show end system-to-intermediate system information

　　firewall             Show firewall information

　　helper               Show port-forwarding helper information

　　host