Show & diagnostics
show interfaces [iface]
Detailed counters and status for one or all interfaces (MAC, bandwidth, duplex, errors).
Works on: Router, SwitchMode: enable
Sample output
Gi0/0 is up, line protocol is up
Hardware is gigabit, address is 02:92:B9:28:B2:17
Internet address is 10.0.0.1/24
MTU 1500 bytes, BW 1000000 Kbit/sec
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 1000 Mbps
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
8 packets input, 784 bytes, 0 no buffer
Received 0 broadcasts (0 multicasts), 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
8 packets output, 784 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
Gi0/1 is up, line protocol is up
Hardware is gigabit, address is 02:93:B9:2A:45:E0
Internet address is 10.0.1.1/24
MTU 1500 bytes, BW 1000000 Kbit/sec
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 1000 Mbps
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
8 packets input, 784 bytes, 0 no buffer
Received 0 broadcasts (0 multicasts), 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
8 packets output, 784 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
Se0/0/0 is up, line protocol is down (notconnect — no cable)
Hardware is serial, address is 02:32:95:BD:C5:60
MTU 1500 bytes, BW 1544 Kbit/sec
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Auto-duplex, 1.544 Mbps
** no cable — connect this port on the canvas **
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
0 packets input, 0 bytes, 0 no bufferTruncated at 40 of 60 lines — run it in the lab for the full output.
Captured from the NetForge-AI simulator running a real topology.
Run this command live
Don't just read it — type show interfaces [iface] in a real network simulator in your browser and watch it take effect. No install, no account needed to start.
Frequently asked
What does the "show interfaces [iface]" command do?
Detailed counters and status for one or all interfaces (MAC, bandwidth, duplex, errors).