Port-channel (or etherchannel) is a great way to increase the transport capacity between 2 switches or between a switch and an end device that suport load balancing (e.g. server). Today I don’t want to focus on how the Port-channel are configured, but more on how they load-balance the traffic over...

“Vyatta is  a software-based, open-source, network operating system that is portable to standard x86 hardware as well as common virtualization and cloud computing platforms. By deploying Vyatta, users benefit from a flexible enterprise-class routing and security feature set capable of scaling...

What should you study? How should you study? What are the hot areas on the Exam? What are the Exam question formats? What should you watch for? What if you need to reschedule the Exam? What can you bring with you? This are the questions that Laura Chappell will try to answer in the 4 free live webinars...

A while ago, I wrote an article about How to integrate GNS3 with VirtualBox in which I have shown how you can easily create a guest machine with its own Operating System and attach it with GNS3.  Everything is working fine when you have the system in front of you, and if you have a graphical interface,...

//The Cisco Enhanced EtherSwitch Service Modules seen above, expands the router’s capabilities by integrating Layer 2 and Layer 3 switching feature sets identical to those found in the Cisco Catalyst 3560-E and Catalyst 2960 Series Switches. The new Cisco Enhanced EtherSwitch Service Modules...

It’s not uncommon to see people making mistake about the two interface commands speed and bandwidth. Most of the young engineers ( and not only ) assume that bandwidth and speed have the same meaning when applied under the interface and that purpose is to reduce the throughput of the interface...

The Cisco Internet Streamer application, part of the Cisco Content Delivery System, contains a directory traversal vulnerability on its web server component that allows for arbitrary file access. By exploiting this vulnerability, an attacker may be able to read arbitrary files on the device, outside...

Not too much to say about. We all know that Cisco is investing a lot into it’s image on the market and sometimes we are dissapointed that what marketing is showing is different from the final product, but the next video worth every penny. At least is funny and can bring a smile on your network...