IOS commands for gathering information - Metasys - LIT-12013055 - Gateway/Router - Cisco Switch - 12.0

Cisco IE 2000 and IE 4010 Ethernet Switches for Metasys Networks Installation Instructions and Troubleshooting Guide

Product name
Cisco Switch
Document type
Troubleshooting Guide
Document number
Revision date

To run the commands that are of most use in configuration and troubleshooting, you must be in the privileged mode. For practical purposes, the switch owner is the person who has physical access to the switch and knows the passwords leading to the privileged mode.

There are two passwords. The first password is for logon; the second is for elevation of privileges, including editing the switch configuration. To edit the configuration using the command-line interface, log on to the switch, enter enable, then enter the password for elevation of privilege.

You can set most terminal servers to create a log file of your sessions. It is advisable to make a log of all your sessions. If you need to gather information, the easiest way is to start a log file, then use commands to display the needed information. The following commands are useful for gathering switch information.

Table 1. CISCO IOS Command Line Interface Commands
CLI command Information displayed
show version Hardware version, software version, MAC addresses, and so on. The switch serial number is indicated as System serial number, and is also marked on the front face and right side of the switch.
show license LAN level, MRP
show running-config The current, active configuration
show mrp ring 1 Ring status and ports for ring 1
show mrp ports Shows the port status for all MRP ring ports
show interface FastEthernet 1/1 Information about port 1
show interface status The port status. This is the same information that you can infer from the port status LEDs on the switch.
show platform sdflash SD card information, including the total amount of memory on the card
show file system Available file system details, including total size and the amount of free space
show sdm prefer The active Switching Database Management (SDM) template
show cdp neighbors Other Cisco devices that are neighbors on the network
show ip interface brief Lists the interfaces configured on the switch
show ip dhcp binding A table of IP addresses and lease status organized by MAC address
show ip dhcp snooping binding

Similar to the previous command, but with additional details. To use this command, DHCP snooping must be enabled. The lease status is one of the following:

  • Active: lease is current and term has not expired
  • Terminated: the term expired without being renewed
  • Terminated + Remembered: the term expired, but the address is still available if the device tries to renew; it returns to the pool if the pool becomes exhausted
show mac address-table The switch’s table of which MAC addresses are associated with each switch port.
show vlan VLAN number, name, status, and port assignments.