router

Book Chapters

Learn how to troubleshoot slowdowns and crashes on Cisco routers

July 19, 2005 12:00am PDT

This chapter from Cisco Routers for the Desperate describes how to troubleshoot router problems that can compromise your network services. Day-to-day router problems can be boiled down into two...

Provided by: No Starch Press

Image Gallery

Gallery: $60 router + DD-WRT = high-end wireless router

February 22, 2008 1:48pm PST

DD-WRT can turn this cheap device into an enterprise-class product with features normally found in devices costing hundreds of dollars more.

15 Latest comment by van33

Articles

Provide redundancy on your Cisco routers with GLBP

October 6, 2005 7:00am PDT

GLBP is a router redundancy protocol introduced in Cisco IOS version 12.2(14)S. Not familiar with GLBP? Let David Davis introduce you to this protocol and show you how to configure it.

7 Latest comment by adv_m@...

White Papers

GLBP - Gateway Load Balancing Protocol

November 18, 2007 12:00am PST

Gateway Load Balancing Protocol (GLBP) protects data traffic from a failed router or circuit, like Hot Standby Router Protocol (HSRP) and Virtual Router Redundancy Protocol (VRRP), while allowing...

Provided by: Cisco Systems

Book Chapters

CCNA 2 Companion Guide: Introduction to WANs and Routers

August 8, 2006 12:00am PDT

Boost your comprehension of the Cisco Networking Academy Program's CCNA 2 course material with this introduction to routers--what they are, what they are capable of doing, how to tell them...

Provided by: Cisco Press

Articles

Configure Cisco routers to use Active Directory authentication -- the router side

May 10, 2007 8:57pm PDT

Did you know that you can leverage the Windows Active Directory username/password database to log in to your Cisco routers and switches? Last time, David Davis explained how to install, configure,...

28 Latest comment by rudresh02@...

Articles

Will an open source router replace your Cisco router?

March 1, 2007 9:50pm PST

How do Vyatta's open source routers stack up to Cisco? David Davis took one for a test drive to find out. Get the details on Vyatta's offerings, and get David's first impressions of using one.

51 Latest comment by SGS_GTI_JAY

Articles

Router Configuration 101: Setting up the router

March 3, 2005 8:00am PST

Whether it's been years since you've worked with routers or you're just starting out, it never hurts to review the basics. In the first part of our three-part series, find out how to boot up your...

54 Latest comment by decoderspot

Articles

Ensure Cisco router redundancy with HSRP

April 20, 2006 7:50pm PDT

What happens if your Internet router goes down and you lose all Internet access? That's why it's important to include redundancy in your network. In this edition of Cisco Routers and Switches,...

12 Latest comment by volatileacid@...

Downloads

Vadosity Router Tool 1 (Windows)

January 17, 2006 12:00am PST

The Vadosity Router Tool automatically updates your Linksys router to reflect the location of your computer in a dynamic IP environment. That is, if you are running an application, playing on...

Provided by: Vadosity

White Papers

On Securing Dynamic Home Agent Address Discovery of On-Board Mobile Router in Mobile IPv6 Networks

February 19, 2008 12:00am PST

In on-board mobile networks, users are connected to a local network that attaches to the Internet via a mobile router and a wireless link. The mobile router has a central role in servicing the...

Provided by: Helsinki University of Technology

Blog Post

Troubleshoot Cisco routers and switches using the debug commands

June 12, 2008 9:59am PDT

David Davis shows you how to get to the bottom of router and switch issues with Cisco's debug commands. Debug can give you a lot of detailed troubleshooting information, but watch out for the...

6 Latest comment by mike610

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

Image Gallery

Photos: Solar powered streetlights, Wi-Fi routers

August 27, 2007 3:34am PDT

Solis Energy uses solar power to fuel wireless routers and streetlights.

Downloads

Sem Sim Cisco CCNA Exam Router Simulator 2.2.1 (Windows)

August 11, 2003 12:00am PDT

Award winning Cisco CCNA exam (640-801) router simulator by Sem-Sim. This comprehensive cisco router simulator comes with a FREE CCNA exam router simulation lab. Supports 200+ IOS commands,30+...

Provided by: SemSim Cisco CCNA Certification Training

White Papers

Congestion Propagation Among Routers in the Internet

November 16, 2007 12:00am PST

In recent years, various non-linear phenomena of the Internet have been discovered. For instance, it is reported that congestion of a router propagates to neighboring routers like a wave. Several...

Provided by: Osaka University

White Papers

Fairness Issues in Software Virtual Routers

March 13, 2008 12:00am PDT

In this paper, the authors investigate the building of a virtual router platform that ensures isolation and fairness between concurrent virtual routers. Recent developments in commodity x86...

Provided by: Lancaster University

Articles

Case study: How a Cisco router upgrade affects network performance

December 1, 2005 8:00am PST

Sooner or later, we all have to deal with upgrading some software or hardware in our organization. And while step-by-step lists and vendor documentation have their advantages, a case study can...

4 Latest comment by wratholix

Articles

Roll back changes on your Cisco router with this command

May 17, 2007 10:04pm PDT

What happens if you've made changes to your router's configuration and something goes wrong? How can you get back to where you started? David Davis tells you about a command that helps you roll...

14 Latest comment by cisco_lover

Articles

Effectively filter Cisco router command output

August 25, 2005 7:00am PDT

Locating the right piece of information from a Cisco router can often be a challenge. Particularly, the show running-config command can return pages and pages of output. David Davis introduces you...

12 Latest comment by adecisco_associate@...