Building DCs with VXLAN BGP EVPN

VXLAN/EVPN is a technology that I am trying to understand in more detail and depth since I started my current job. I am used to “learn” reading books and all my networking theory knowledge comes from books so this one is a good base. I take it as good for beginner/intermediate level but as well, it is a bit “old” as it was released on 2017. In the last month I have built my confidence with VXLAN/EVPN via some issues and testing designs (Arista EVPN L3 Gateway).

As I used to do in the pass, I made notes of the book and I will put them here too so it is a good refresh.

1 INTRO

2 BASICS

3 FORWARDING

4 UNDERLAY

5 MULTITENANCY

6 UNICAST FORWARDING

7 MULTICAST FORWARDING

8 EXTERNAL CONNECTIVITY

9 MULTIPOD, MULTIFABRIC, DCI

10 L4-7 SERVICES INTEGRATION

11 FABRIC MANAGEMENT

Prelude to Foundation

Before last book of Foundation series. I was a bit reluctant to follow but I was actually surprised by this book. It is all about the beginning of psychohistory by Hari. I assumed it would be a bit dull but looks like a bit like Doctor Jones being Indiana Jones 🙂

And the end is quite a twist I didnt expect. So looking forwards for the next.

Dune5: Heretics of Dune

This was a good book from the series. Very engaging with many plots ongoing. Although the end it is a bit “quick”. I got lost with the “Golden Path” references from the God Emperor but in general you get hooked quickly with all the action and new characters. It is really interesting how Duncan Idaho becomes such an important character in the whole series. You would never thought about from the first books.

As well, it is interesting the ideological “fight” against using computes. There is high tech but there is a constant fear from the computer as they could take over. This just come up very few times but you always think the future will be all about technology, AI, etc and then the books go around constantly about “religion”, control, survival, etc.

Looking forwards for the next one as it is the last book written from Frank Herbert based on the reading order

Más Platón y menos Prozac

I read this book around 2001 on the tube to Uni. Not sure why I bought it, I guess the tittle looked interesting mixing a philosopher and an anti-depressant?

Somehow, I wanted to re-read it, maybe first time I do it. I think now it makes more sense than 21 years ago (how things have changed!!!) and proves further my feeling that having a solid moral base it is the key for dealing with (a lonely or not) life. In the last years I have read several books that are categorized as self-help but all they gave me something to build my moral. And this book proves that strategy.

The idea is not all issues are “fixed” with a pill. In some (maybe many?), it is our way of thinking what it is causing our problems. And I can’t agree more. I am fully aware that many of my complaints are more based on my behaviour that external things. So this is a work for life. And I dont mind. If you dont work a muscle, you know it goes weak.

The book focus in Western and Oriental philosophies but it doesnt prefer any, each person, each case, needs a different approach, so that builds your tool box. You have an intro to several aspects of philosophy that are “easy” to digest. That is quite good, because one of my complaints is that most authors make their book imposible to digest if you are not one of them, and that kills the idea of philosophy? This should be for everybody! That should be the essence of philosophy.

As well, the book gives the process PEACE to use the philosophical approach and provides examples for several cases.

Still, the book doesnt deny that there are cases where medication is needed. And I agree with that. So the idea of visiting a philosopher is added to the current options of a psychologist or psychiatrist. And the site is up. And it is quite spread. The idea to attend a philosophical cafe conversation is appealing, sometimes you yearn for a deep conversation.

So at the end, it was worth to read it again to carry on my work of self-care/improvement, resilience, etc.

Foundation and Earth

This is my fifth book of Foundation series. I liked it but the end that was a bit of a pluff. I was surprised that it was a continuation of Foundation’s Edge as the other books were set in different stages from the establishment of Foundation(s) to the advancement of Seldon’s plan with different plots and characters.

Still it hooked me and read it very eagerly.

Very likely I will read the other two books related to before foundation. And maybe in the future I will give it a go to the Robots series.

The Silk Roads

It has taken a bit more time than usual but really enjoyed this book. I learned a lot of new facts. I love history and in school we were very focus in European history and neglected greatly all other parts of the world. In this book you can read about the importance of the routes between Europe and Asia along the centuries. Because all great empires were supported through commerce. From the constant battles between Ancient Greece and Persia, Rome, the pressure of the mongol empires from the East, Christianity, Byzantium, the rise of Islam and its lighting spread from Arabia to westerm Europe and the far east, the religion wars, crusaders, etc. It is interesting Vikings travelled “south” to commerce with the east, mainly with slaves captured in the way down. That slaves were the most profitable business. That the word”slave” comes from “slav” so those were the tribes mainly captures to become slaves and sold to the current empire and business centers between Europe/Asia. That luxury was a main drive in business: obviously silk and spices. How the discovery of America by the Spaniards was a waste of resources in European wars, and crashed South American population and culture. How Christian religion looked somewhere else at that time (link1 link2) apart from Dominican Bartolome de Las Casas. Funny enough the next-to-come empires (Dutch and English) did the same… And is funny too how tolerant was Islam for centuries and intolerant Christianity (has changed this?)

Then it comes the last couple of centuries.The heavy industrialization, the desire to maintain the status-quo, etc. For me was mind-blowing the approach for the WW1 and WW2. WW1 was to maintain the empires against the new forces: Germany and Russia. The goal was mainly keeping the East under control (India during English Empire time – that is bigger than current one..) and the new gold, petrol (Persia aka Iran, Mesopotamia aka Irak, etc). But the war was mainly fought in mainland Europe… Then you see the lack of scruples from Britain and then America dealing with the countries in the East. Then you can understand all the mess we see in Irak, Iran, Afghanistan… And Ukraine. Germany tried to conquest URSS during WW2 to get Ukraine as it was considered the granerie of Europe… and the south part of URSS so it could control the petrol supplies too. As well, you see the times when Iran and Israel were friends xD. Funny enough all the nuclear technology in Iran is from USA. USA got involved in Afganistan when the URSS invaded it (I will always remember the movies Rambo III and Red Scorpion) I think nobody from the army watched those movies…

I leave a lot of things behind but it is a great book. I read it as ebook but it is worth have it in paper. Very likely will get the next book.

Dune4: God Emperor of Dune

I had low expectations in this book after reading the third part. But I was surprised at the beginning about the new setup of the planet, Leto and new twists. The “philosophical” moment of Leto are a bit boring because I got to the point I dont know what he is talking about but I liked when he mentioned Torquemada when discussing about religions. The end of the book wasn’t really great but I enjoyed it overall. Looking forwards for the next chapter!

Essentialism

This is a book about “simplifying” your life, removing what is not necessary and focus in the important. These are nice words but actually very difficult to accomplish nowadays. I have read several book that are quite related to this subject, like “indistractable”, “drive”,”deep work”, “flow”, “atomic habits”, etc. Focus in “less is better”. If you dont put a limit, somebody will do it for you

For me, I am struggling in the “Tech” side. I want to learn so many things that at the end of the day/week/months/years I notice I haven’t reached anywhere. I have hundreds of tabs open in my browser with things I want to read “soon”. Something similar happens with recipes, I have so many pieces of magazines, videos and pics in my phone, that I feel overwhelmed. At least I am focus in my climbing (getting fitter), baking (bread!)/cooking and reading.

The author explains the process to become an Essentialist as three phases:

Explore:

  • Create space. It is good to be bored. Read old books. Meaning.
  • Play: Sir Ken Robinson
  • Sleep: Protect the most important asset, you!
  • Select: Hell yeah or no. Trade-offs. Good to Great (book).

Eliminate

  • clarify: cleanup the wardrobe
  • dare: say “no”
  • uncommit: sunk cost, endowment effect, fear of missing out
  • edit: options, condense
  • limit: you can pay a price for setting boundaries BUT boundaries are freedom!

Execute:

  • Buffer: add 50% in your planning. extreme preparation
  • Substract
  • Progress: repeat, repeat
  • flow: create routines

This is the typical book that I put in my stack of good reads, to read again at some point so I can refresh concepts because I forget things. Even after finishing it a couple of days ago, I got the feeling that I have forgotten most of it. And in this case, I gave away the book so I am even struggling to get my notes/thoughts here 🙂

Foundation’s Edge

This is the forth book of the series. I was a bit weary at the beginning as I thought it was going to be a boring continuation (like it was my last Dune book). But it hooked me and read it voraciously. I was surprised how quickly I finished it. I liked how all the parts are faced at the end and the goals they want to achieve plus how different are the personalities of each character.

It was interesting after four books, that is the first time it is mentioned alien life and robots. Thinking this is sci-fi based on a very far future I should have noticed that very early on the series but still it is really engaging with all the twists.

Looking forwards for the next books!

Attached

This book was a gift from a very good friend. It has been an interesting read as it has helped me to put labels to my own behaviours and explain some situations in my last (and only) relationship.

The book states there are mainly three type of behaviours in relationships

  • Secure: comfortable with intimacy and communicating.
  • Avoidant: dont want to get to close for fear to lose independency
  • Anxious: too preoccupied and overthinking the relationship, requires lot of closeness.

In my case I am mainly avoidant, and I realised that my ex-girlfriend was anxious. And funny enough, it seems the statistics say this is the common common couple because there are few “secure” in the market and relationships between members of the same group are really uncommon. I actually laughed at this! But I think it is quite true.

The goal is not becoming overnight a secure person but to communicate needs from each side to make the gap smaller.

And from other side, people evolve, change for good and bad. So if you are secure doesnt mean you are always going to be secure, if you attachment fires in a weird way to you can end in a bad situation.

While reading this, I was analyzing myself and my former relationship and was funny how many things started to make sense.

Another thing, attachment is not love. That was a relief. Before my former relationship, I got hit by another person and that made me feel like a puppet, I felt like nothing and I hit rock bottom. But that helped me to work on myself seriously. And this can happen to anybody…

And bad attachments can be difficult to break…

Although, this is not just extremes. I think I have been secure in several points but now I have understand myself better and I think I would act better in a new relationship.

As well, this knowledge helps you to filter potential partners or actual ones. So it can help you to improve your relationship.

At the end of the day, (as usual, I am always trying to find the universal truth in books), everything is reduced to communication. Express your needs openly. Make the relationships a two way street that goes to places.