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Blog Post

10 commands you should master when working with the Cisco IOS

June 13, 2008 6:33am PDT

Becoming proficient with the Cisco IOS means learning some essential commands. This quick reference describes 10 commands you'll need to rely on when handling various configuration and...

12 Latest comment by career@...

Articles

Configure DHCP on a Cisco router or switch

May 5, 2005 7:00am PDT

Many administrators forget—or don't even realize—that they can configure Dynamic Host Configuration Protocol (DHCP) on Cisco IOS routers and switches. David Davis discusses the pros and cons of...

43 Latest comment by thedzaho

Blog Post

Practice Cisco router configuration using a free emulator

January 10, 2008 11:47am PST

With a simulator, there are always missing commands and programming errors, and it can never really be as complete as the real IOS. However, because an emulator runs the IOS, you get every feature...

39 Latest comment by wizard57m-cnet

Articles

Properly set a Cisco router's clock and time zone

October 25, 2006 6:17pm PDT

Does setting the correct time on a router really matter? Actually, it does. In this edition of Cisco Routers and Switches, David Davis reviews the benefits of setting the correct time on your...

13 Latest comment by ciscoman84

Blog Post

Configure static NAT for inbound connections

June 6, 2007 8:50am PDT

Someone recently asked me how to configure Network Address Translation (NAT) so that computers on the Internet could access his internal Web and mail server through his Cisco router. This requires...

11 Latest comment by osaid.suliebi@...

Articles

Setting passwords on a Cisco router

May 1, 2001 7:00am PDT

Network security relies heavily on passwords. Cisco routers use passwords to ensure that only "trusted" users can perform certain services. In this Daily Drill Down, Todd Lammle takes...

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...

8 Latest comment by eventhefield

Articles

Synchronize a Cisco router's clock with Network Time Protocol (NTP)

May 26, 2005 7:00am PDT

It's critical that all devices on an organization's network display the accurate time and date. If they don't, things can go wrong in a hurry. David Davis explains why Cisco devices need to use...

6 Latest comment by m_ramadan85@...

Blog Post

DIY: Extend your wireless range on the cheap with a second wireless access point

March 24, 2012 4:58pm PDT

If your business needs to extend its wireless range but doesn't have the budget for a complex setup, Jack Wallen has the solution for you.

Articles

Configure SSH on your Cisco router

September 22, 2005 7:00am PDT

Most IT pros know that using Telnet to manage routers, switches, and firewalls is not exactly a security best practice. Instead, the accepted alternative to Telnet's lack of security is Secure...

11 Latest comment by aw_willis@...

Blog Post

Signs a client may not be ready for managed services

May 15, 2013 9:44am PDT

Warning bells should go off in your head if you spot any of these items indicating managed services are not a priority at a prospective client's site.

7 Latest comment by secondstartech

Blog Post

Using a USB flash drive with your Cisco router

August 16, 2007 11:52am PDT

Some time ago, ZDNet's George Ou wrote an innovative article for TechRepublic about using USB flash drives or compact flash (CF) cards to upgrade a router. This week, I want to take that article a...

13 Latest comment by zoolandercu

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

Cisco administration 101: Five interface commands you should know

August 10, 2006 7:29pm PDT

Whether you're a seasoned admin or a newbie, it's always a good idea to review from time to time. When working with routers and switches, you usually don't have to configure an interface using the...

12 Latest comment by Syed Abdul Ali

Image Gallery

Cracking open the Linksys WRT54G wireless router

April 19, 2007 11:24am PDT

The Linksys WRT54G Wireless Router is one of the most common 802.11g devices deployed. A favorite of everyone from Linux fans to Windows users, here's a look inside what powers this ubiquitous device.

38 Latest comment by animoid

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...

17 Latest comment by cw@...

Blog Post

Limit bandwidth on a Cisco Catalyst switch port

December 6, 2007 1:07pm PST

A TechRepublic reader recently e-mailed me to ask about limiting the bandwidth on a Cisco Catalyst switch port. In fact, there are a number of uses for this configuration. Let's take a closer look.

26 Latest comment by vivs1987

Articles

Configure QoS on your Cisco router with this template

November 16, 2006 7:48pm PST

Using quality of service (QoS) on Cisco network devices helps provide both bandwidth and priority to certain types of network traffic. In this edition of Cisco Routers and Switches, David Davis...

35 Latest comment by nur_raziel

Blog Post

The 10 Cisco IOS Router file management commands you must know

December 12, 2008 6:00am PST

David Davis goes over the Cisco IOS commands you must know to manipulate files on your Cisco router flash, nvram, or other filesystems, allowing you to back up your configuration, upgrade your...

12 Latest comment by rwhybrow@...

Blog Post

Configure lines and VTYs on Cisco routers

December 13, 2007 10:09am PST

All Cisco routers have two special types of lines, and many Cisco routers have a third. What are these lines, and how do you configure them? These are things that every network admin should know.

14 Latest comment by vijayasankarj