DellEMC SmartFabric Director

SUMMARY: DellEMC seems to be tightening its focus on VMware and NSX-T fabrics by providing tools to ease the deployment of an underlay. SmartFabric Director (SFD) is a new tool to simplify that deployment and provide the needed functions for running an ethernet fabric with NSX-T on top. All the major needs for a fabric are covered to some greater or less extent. The tool can be used for other deployments as well but I think it makes most sense when putting NSX-T on top. See… Read More »DellEMC SmartFabric Director

Aruba’s SD-Branch Part #1: Solution Components

Edit: You should also check out Ed Horley’s excellent take on Aruba’s SD-Branch presentation at https://www.howfunky.com/2019/10/network-field-day-21-aruba-sd-branch.html Overview I saw a great presentation about Aruba’s SD-Branch offering as part of being a delegate for Network Field Day #21. I’m going to spend two posts covering SD-Branch as I am not extremely familiar with Aruba’s product line and I suspect I am not alone in that regard. In this first one I’ll go through the parts that form the solution and include a lot of links to… Read More »Aruba’s SD-Branch Part #1: Solution Components

NFD21 Delegate!

It is my great honor to serve with Bruno Wollman, from my CCDE study group, as a delegate to NFD21! I’ve never participated before but I have watched some of their videos and recently subscribed to the podcasts by Gestalt IT. I’m joining for the second half the week and will get to see the following companies present: Network to Code – They are well known for their role in automation and I’m keen to see their presentation. Likely many engineers I’ve taken some tentative… Read More »NFD21 Delegate!

Response: Is NAT Security? Should I remove my public IPv4 from my internal network?

This question came really as a need to transition off “public” IPv4 space on an internal network and to the more commonly RFC1918 internal address along with NAT (for security reasons). This posting is the bulk of my reply to the customer. I really see this as the often-discussed question “Is NAT security?”. My wording/frame of reference here is as if I’m writing to someone not entirely familiar with NAT. I tried to provide some reference material below ; to avoid a pure appeal-to-authority. Okay,… Read More »Response: Is NAT Security? Should I remove my public IPv4 from my internal network?

CCDE: Understanding It and You

Overview This post is about covering three key ideas in preparing to take the CCDE and how to validate those ideas through the use of scenarios . The ideas are being minimally qualified, being technically complete,  and being connected to the scenario. The ideas combine to provide success on the test. Being Minimally Qualified Being minimally qualified means understanding the necessary depth of knowledge that is needed on a topic. As an example, it is important to understand QoS, the models of it, how it can help (or hinder) a design,… Read More »CCDE: Understanding It and You

Study Materials: MPLS

Well, as predicted I made it about 300 pages into the End-to-End QoS book before needing a new topic. As I had a large chunk of time to spend last week I decided to bear down on MPLS; a technology I was less familiar with and really needed to clarify my understanding of. To that end I worked to finish Definitive MPLS Network Designs and also make headway in MPLS Fundamentals. Definitive MPLS has really excellent explanations but its density was too great for my… Read More »Study Materials: MPLS

Book Complete: IP Multicast, Volume I

As promised I finished it, IP Multicast, Volume I. I enjoyed the book and it certainly improved my understanding of multicast. I was struggling at the end to make it through the chapters on IPv6 and Troubleshooting but I do notice I get subject fatigue after so many pages (generally around 300 or so). I’ve nearly updated all the mind-map bits and will get a fully updated version posted soon. Next, as I mentioned, is End-to-End QoS Design. I’ll be honest in saying I’m not… Read More »Book Complete: IP Multicast, Volume I

Book Complete: Optimal Routing Design

Well, I broke from my plan in finishing IP Multicast, Volume I and completed Optimal Routing Design (or ORD as I’m using in my internal notes) first. I am almost complete with the Multicast book as well – just a bit more on the IPv6 portion but I needed a break from pure multicast and got sucked into ORD and finished it. It is a great read and very, very easy to consume I think. It does a great job of laying out each major protocol… Read More »Book Complete: Optimal Routing Design

Certification News: Passed f5-201

Long Journey, Much Delay I started this journey over two years ago. When I joined my current company I decided I would get f5 certified as I didn’t think we had folks with it and I could help expand our business by being “that guy”. The reality is that we didn’t have a lot of f5 work and I had other things to master ahead of it. I went to Agility 2016, took the 201 training course and determined to get through it then. I… Read More »Certification News: Passed f5-201

CCDE Practical Take #1, May 30th, 2018

Reasoning for the Post It seems customary to write one of these posts after attempting a CCIE or CCDE. At first, I resisted as I didn’t see much value in reporting my experience out – at least not over what others have already written and can be found with a Google search (which is far more likely to return a result than this posting). Nonetheless while attending the excellent session LTRCCDE-3006 at CiscoLive this year I was proven wrong. I took the session for the… Read More »CCDE Practical Take #1, May 30th, 2018