Checking the Configuration
If the interface is down and you configured it as up, or if the displays indicate that the hardware is not functioning properly, ensure that the network interface is properly connected and terminated. If you still have problems bringing the interface up, contact a service representative for assistance.
Note For complete command descriptions and examples for all of the supported platforms, refer to the documentation resources listed in the “Related Documentation” section on page vi.
Cisco 7200 Series, Cisco 7100 Series, and Cisco uBR7200 Series show Commands
With the show interfaces type slot/port command, use arguments such as the interface type (fastethernet, and so forth) and the port number (slot/port) to display information about a specific interface only. The following example of the show interfaces fastethernet command shows information specific to the Fast Ethernet interface on the first
Router# show interfaces fastethernet 4/0
FastEthernet4/0 is administratively down, line protocol is down Hardware is DEC21140, address is 10.0.0.0 (bia 0000)
MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec, rely 255/255, load 1/255 Encapsulation ARPA, loopback not set, keepalive not set, fdx, 100BaseTX ARP type: ARPA, ARP Timeout 4:00:00
Last input 3:08:43, output 3:08:42, output hang never Last clearing of “show interfaces” counters 2:58:36 Output queue 0/40, 0 drops; input queue 0/75, 0 drops 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 buffer Received 0 broadcasts, 0 runts, 0 giants
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort 0 watchdog, 0 multicast
0 input packets with dribble condition detected
0 packets output, 0 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets, 0 restarts 0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier
0 output buffer failures, 0 output buffers swapped out
Note For the Cisco 7206VXR and Cisco 7206 router shelves, the show interfaces command requires a shelf number in the format show interfaces type shelf number/port adapter slot/interface.
Use the show version command to display the configuration of the system hardware (the number of each port adapter type installed), the software version, the names and sources of configuration files, and the boot images. Following is an example of the show version command:
Router# show version
Cisco Internetwork Operating System Software
IOS (tm) 7200 Software
Copyright (c)
Compiled Sun
Image
ROM: System Bootstrap, Version 11.1(6)CA
Router uptime is 4 hours, 22 minutes
System restarted by reload
System image file is
