cisco ios

Image Gallery

Configuring the Cisco 851W or 871W: Standard IOS

May 17, 2007 1:24pm PDT

The previous tutorial in this series looked at how to set up an advanced SOHO configuration for the Cisco 871W wireless router. Now we're turning out attention to the more affordable Cisco 851W....

4 Latest comment by ssscud

Book Chapters

Configure frame relay operations on Cisco routers

August 25, 2005 12:00am PDT

This sample chapter, taken from Cisco Press' Cisco Frame Relay Solutions Guide, explains how to configure a basic Frame Relay network involving Cisco equipment, as well as how to monitor and...

Provided by: Cisco Press

Blog Post

Choosing the right product for a branch office: Cisco ASA or IOS Router?

December 8, 2010 6:00am PST

CCIE Brandon Carroll compares the Cisco ASA and an IOS Router for connecting a small branch office. Here is the criteria he evaluates and the product that he thinks works best.

35 Latest comment by pneumoboy

Articles

Learn which three tools no Cisco admin should be without

April 7, 2005 7:00am PDT

What's better than a cool tool that makes being a network administrator easier? David Davis shares the top three Cisco administration tools he uses on a daily basis. See which tools he can't live...

20 Latest comment by walter@...

Blog Post

Protect your network with the Cisco IOS Firewall

February 7, 2008 12:42pm PST

Why buy another expensive device if your router can also provide firewall functionality? Any "Firewall Feature Set" version of the Cisco IOS contains the IOS Firewall, a built-in firewall inside...

14 Latest comment by darks0ul

Articles

Understand the levels of privilege in the Cisco IOS

April 14, 2005 7:00am PDT

Many network administrators who work with the Cisco IOS never bother to think about the level of privilege they're using or what that level means. However, the Cisco IOS actually offers 16...

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Video

10 Cisco IOS Router file management commands every Cisco admin should know

March 23, 2009 7:16am PDT

Just like Windows and Linux, the Cisco IOS has its own list of commands to manipulate files, and it's critical for Cisco network administrators to be very familiar with them. Bill Detwiler goes...

Blog Post

Video: 10 Cisco IOS Router file management commands every Cisco admin should know

March 23, 2009 7:18am PDT

Just like Windows and Linux, the Cisco IOS has a list of commands to manipulate files, and it's critical for Cisco network administrators to be familiar with them. Bill Detwiler goes over some...

36 Latest comment by CharlieJax@...

Blog Post

Monitor Cisco routers and switches using the IOS environment command

August 1, 2008 6:00am PDT

How do you know if your remote router and switches are being cooled properly? Are the fans working? David Davis tells you how to see the environmental status of your Cisco routers and switches and...

9 Latest comment by devendra.pareek

Articles

Cisco administration 101: The importance of backing up the IOS

August 3, 2006 7:00am PDT

Router configurations represent hours of work and may even be impossible to recreate. That's why you can never be too cautious when it comes to backing up this critical data. In this edition of...

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Articles

Prevent outbound IP spoofing with the Cisco IOS

April 5, 2007 7:43pm PDT

David Davis recently discussed how to prevent inbound IP spoofing, but outbound spoofing also poses a threat to your organization. Find out how to prevent outbound IP spoofing, and learn other...

4 Latest comment by Dumphrey

Articles

Learn additional uses for Cisco IOS access control lists

October 27, 2005 5:06pm PDT

Network administrators typically use access control lists (ACLs) to stop traffic or permit only specified traffic while stopping all other traffic. While this is the primary use of ACLs, there are...

14 Latest comment by webwidejosh

Articles

Get to know your logging options in the Cisco IOS

June 15, 2006 9:31pm PDT

Knowing how to properly use logging is a necessary skill for any network administrator, and the Cisco IOS offers many options for logging. To help bring you up to speed, David Davis discusses how...

6 Latest comment by Polypeter

Articles

Be aware of how easily someone can crack a Cisco IOS password

March 31, 2005 8:00am PST

Many administrators don't realize how easily someone could crack a Cisco IOS password, which is actually a rather simple process. Learn how you can lessen the chance of this occuring with your...

3 Latest comment by Navf

Articles

Clarifying the Cisco IOS bandwidth command

July 13, 2006 8:13pm PDT

David Davis has recently noticed that there seems to be some confusion out there about Cisco's bandwidth command, and he wants to set the record straight. In this edition of Cisco Routers and...

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Articles

Understand the order of operations for Cisco IOS

March 30, 2006 5:21pm PST

Being familiar with the Cisco IOS order of operations is vital when it comes to understanding how the traffic within a router is flowing and how to control that traffic. This week, David Davis...

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Articles

Master the many uses of the Cisco IOS test command

February 10, 2005 8:00am PST

The Cisco IOS test command can be a very useful and powerful command in both real-world and lab scenarios. Learn the basics of using this command, and find out about several helpful subcommands.

3 Latest comment by abdallah_ezat2000@...

Articles

Take advantage of the Cisco IOS Web server on your router

February 17, 2005 8:00am PST

Many network administrators aren't aware that they can use a Cisco router as a Web server. While it's not always the best solution, it can definitely serve in a pinch. Find out how you can take...

9 Latest comment by imrananjum

Articles

Get to know the Cisco IOS show interfaces command

August 23, 2006 6:44pm PDT

If you don't know what's really going on with the interfaces on your Cisco routers, then you likely don't know which changes you need to make. In this edition of Cisco Routers and Switches, David...

6 Latest comment by ramini

Articles

Restore the Cisco IOS to a router

March 24, 2005 8:00am PST

Have you ever accidentally wiped out the IOS on your router? If you're not paying attention, it can be an easy mistake to make. While you have a few options for rectifying this, your best bet is...

11 Latest comment by geekmicrochip