show interfaces status is a Cisco IOS switch command for quickly checking each port’s name, description, status, VLAN, duplex, speed, and interface type. It does not work on routers. section 8.1.1 section 8.4
Read the most useful columns as follows:
- Status shows whether the port is connected; notconnect indicates an inactive connection. section 8.1.1
- Name displays the configured interface description, such as ## end users ## or ## to R1 ##. section 8.1.1
- Duplex and Speed show operating settings; the prefix a- means autonegotiation, as in a-full and a-100. section 8.1.3
Check switch ports
SW1# show interfaces status Port Name Status Vlan Duplex Speed Fa0/1 ## end users ## connected 1 a-full a-100 Gi0/1 ## to R1 ## connected 1 a-full 1000 Fa0/3 ## not in use ## notconnect 1 auto auto Use the output to identify connected ports, verify descriptions, and compare negotiated or manually configured speed and duplex settings. section 8.1.1 section 8.1.3
SW1# show interfaces status Port Name Status Vlan Duplex Speed Type Fa0/1 ## end users ## connected 1 a-full a-100 10/100BaseTX Fa0/2 ## end users ## connected 1 a-full a-100 10/100BaseTX Fa0/3 ## not in use ## notconnect 1 auto auto 10/100BaseTX . . . Gi0/1 ## to R1 ## connected 1 a-full a-1000 10/100/1000BaseTX Gi0/2 ## not in use ## notconnect 1 auto auto 10/100/1000BaseTX
View a complete switch-port listing with descriptions, status, VLAN, duplex, speed, and type. section 8.1.1
