Introduction I’m currently designing and implementing a large network which will run MPLS. This network will replace an old network that was mainly L2 based and did not run MPLS, only VRF lite. There are a few customers that need
400k Views in 4 Years – A Review of My Last 4 Years
Very often in our lives we are fully focused on what is going to happen in the future. We rarely look back at what we have done and how we got to where we are now. People that know me,
The New CCNP – Combining Exams
The new CCNP RS was just released. The last day to test with the old exams is January 29, 2015. What is usually seen is that people start to panic, they want to complete the old exams before they are
CCNP RS Version 2
I woke up to the news that CCNP RS Version 2 is now live. As usual, there is no reason to panic. If you have been studying for the old version, nothing has been wasted. OSPF is still OSPF, EIGRP
Potential Issues with Multicast within a VLAN Spanning Switches
Background I ran into an interesting issue yesterday at work. There is a new video system being installed, which takes the video output from computers, encodes it and sends it as multicast to a controller. The controller then displays it
Routing Considerations in DDoS Protection Environments
Lately I have done some studying for the CCDE and one of the things I was looking at is how to protect against DDoS attacks. I’m not expecting it to be a big topic for the CCDE but it has
Ethernet, STP, Topology change and the behaviour of Ethernet
Introduction This post is inspired by a post at IEOC about Uplinkfast and TCN which can be found here. Before we get to those parts, let’s recap how Ethernet and STP work together. Spanning Tree The Spanning Tree Algorithm builds
Cisco now #1 on bladeservers in US with the Cisco UCS
Five years ago, Cisco started out on their journey to get in on the server market. Very few people believed that Cisco would get a big share of the market. Today, just five years later we are reached by the
A Short Update on CML from #CLUS
Hey everyone, I’ve been having a really good time here at Cisco Live US. Here is a short update on CML. General Info CML is being released end of June or beginning of July. The corporate edition with a base
OSPF – Non Broadcast and Point to Multipoint
Introduction There was a discussion on a forum about the point to multipoint network type in OSPF. What is the purpose of it and why are /32 endpoints advertised? To understand the solution we must first understand the problem. This