Useful Cisco IOS Tips and Tricks

layer 2&3 status, updates IOS shortcuts, WS-X6148A-GE-45AF

Useful Cisco IOS Tips and Tricks

Let’s face it; who couldn’t use a little help navigating in IOS? If you’re new to this operating system, the differences in commands and parameters can easily leave you scratching your head, given that there are thousands to choose from. These tips should help to give you enough of a foundation to make working in this system much easier.

Before we begin, if IOS projects to the be among the most common operating system that you’ll be working with going forward, consider following any of the updates IOS shortcuts as they are released so can easily acquaint yourself with them.

Some Helpful Hints

  • If you’re unfamiliar with IOS’ many commands, the “?” command will allow you to search for the exact one you’re looking for. You can customize a search to find all available commands, commands that begin with a certain letter, or required IP parameters.
  • If you like to be able to see the data relative to the interfaces with which you’re working, such as their IP addresses and Layer 2 & 3 status, both the “show ip interface” and “show ip interface brief” commands are helpful. “Show ip route” will also show the routing table.
  • Understanding the different modes of IOS will help you which elements you’re allowed “View Only” access to, and which you can manipulate. You begin at user made when first logging on. Enabling privileged mode allows you to view configurations, yet it won’t allow you to make any changes. Typing “config terminal” allows you to switch to global configuration mode. From there, you view and change whatever you like. Knowing which mode you’re in is simple: just like at the prompt. “>” tells you you’re in user, “#” means you’re in privileged, and “config(#)” lets you know you’re in global. Leaving a mode is as simple as typing “exit.”
  • Should you experience any sort of system failure, the “copy run start” command will save, in RAM, the configuration you’re currently in. Remember, however, to avoid rebooting the router after a system failure, as any saved data will be lost.

While certainly not foolproof, these tips will help when working with any Cisco router or switch, including WS-X6148A-GE-45AF. Remember, if you’re new to system, expect to be frustrated during first few sessions. With time, however, you’ll learn to love all the IOS has to offer.


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