Living in the underlay

I had the opportunity to participate in the latest MPLS SDN NFV World @Paris 2018, and need to say I've saw a lot of SD-WAN gear around and had the opportunity to talk with some technical experts regarding their solutions. The main goal of this post is to point some considerations I'd found during this week, if you feel that you company...

I'm having lot of discussion with my students and colleagues regarding this topic and want to start by clarifying this question that someone made few time ago: "Why do you teach Cobra SDK for CCIE DC curricula instead of pure raw REST API?" The answer was quite simple "Is in the official curricula/blueprint and you need to master it" ...

One of my colleagues just asked me about the recommended reading list for the Juniper DC track (in particular what I've used to clear JNCIP-DC few weeks ago), here is a complete list of free resources that you can access to prepare yourself for the exam, I will also recommend (if you don't have any real/lab experience with QFX/EX for vxlan...

I was using this quite lot past weeks and think that is a good resource to share to everyone playing around with Cisco ACI. When it comes to tshoot and to understand packet flow inside the Fabric ELAM is a great tool. So, what it is? ELAM...

A long time ago (I think it was years back) I was reviewing a DR solution for some internal customer who has two datacenter and a DCI between them (dark fiber). They moved initially to a stretched design extending vlans from each site and...

For those attending to my CCIE DC v2 bootcamp next week, here is the updated outline, I will be posting updated diagram in few (remember this course is not based in any rack rental so interface numbering is up to that :) ) Introduction Exam Considerations / Oveview / Strategy Section 1 – Cisco Data Center Layer 2/Layer 3 Technologies 1.1...

Past week two weeks a colleague and also a student asked me about Phantom RP and how it works, all was related with a discussion we have around VXLAN Part 2 post and about supported Multicast configurations for VXLAN in NX-OS. First...