Archive for July, 2008

Cisco introduced three new entry level technology-based CCNA certifications

July 7th, 2008 by Bojana Stucin


Cisco has recently announced new CCNA Voice, CCNA Security and CCNA Wireless certifications. Designed to build upon Cisco’s most popular career certification CCNA, these highly specialized associate-level certifications offer individuals a career stepping stone in the converged technologies that make up today’s sophisticated networks. While Cisco Certified Network Associate (CCNA) ...

Which IOS release should I use?

July 4th, 2008 by Ivan Pepelnjak


Put yourself into the shoes of a network architect working for a big financial institution. Your CIO has been persuaded that the bank could reduce WAN costs significantly by deploying IPSec over public IP network for primary branch office connectivity. You’re responsible for the design and implementation of this solution, ...

New math: 2 + 0 = 3?

July 2nd, 2008 by Marjan Bradesko


At a recent ITEC conference in Seattle, I heard »2.0« so often that I do not believe there are any other digits in this world. In the digital era we had zeroes and ones; today we seem to have only two and zero: Web 2.0, Desktop 2.0, Internet 2.0. Some ...

The OSPF Default Mysteries

July 1st, 2008 by Mojca Parkelj


Default routing should be a simple concept, but becomes surprisingly complex in routing protocols that have multiple layers of default routes. In this IP Corner article, Ivan Pepelnjak, the Chief Technology Officer (CTO) at NIL Data Communications, describes how the Open Shortest Path First (OSPF) protocol uses default routes and ...