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In the IWAN Part 1 PfRv3 Design Considerations blog, I went over several PfRv3 concepts and design considerations.  Now that the foundation has been established, we are ready to create a high-level IWAN design.  The routing design, however, is the most complex piece of the solution. PfRv3 is not a routing protocol. It is a piece of software which sits on top of the routing protocol and ... Read more

Different applications have different needs in terms of delay, jitter and packet loss so it makes sense that routing decisions should be linked to each application. However, legacy routing protocols are not able to provide the routing calculation(s) considering the metrics at such level. The new Software-Defined WAN (SD-WAN) solutions have arisen on the market to more intelligently pass traffic ... Read more

Elaine Lopes

Top 5 CCDE Study Tips

Posted by Elaine Lopes Oct 14, 2016

Do you want to know what helped CCDEs on their journey to certification? What actual CCDEs have done to prepare for and pass the practical exam? Some findings were expected, but some were surprising and others just shed light onto unspoken yet key things. If you are on your journey towards CCDE, this article will help you - read on! This blog will cover the results of an unofficial, anonymous ... Read more

In the Design Challenge Part 1, I described a scenario with four slightly different sets of requirements and eight design solutions. Now in part two, I will analyze the requirements and compare the solutions to determine the “best” solution for each requirement set. Observe that I’m not talking about best practices, but rather to customize a solution.         ... Read more

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