Demystifying the Cloud

The interest in cloud computing has been growing inside me for quite a while. Its advantages, how it works and the technologies involved.

In the middle of all this I found a very interesting document that I saved from being eaten by my son. I was lucky to arrive on time.

Demystifying the Cloud helps us understand the history and the path taken to where we are today, virtualization, the essential characteristics of the cloud and in the end quickly describes the top 3 cloud computing providers. While it was written in 2012 and I already knew parts of it, it was still relevant to remind me of the concepts and strengthen my little knowledge.

The author of the document is Janakiram MSV and his site www.janakiram.com its one of those you should bookmark if cloud computing and technologies are your thing.

 

You can download the document here: https://mvctips.tradepub.com/free/w_jana01/prgm.cgi

Perfection

Perfection is achieved, not when there is nothing more to add, but when there is nothing left to take away.
Antoine de Saint-Exupéry

Packet Capture Capabilities of Cisco Routers and Switches (Mind Map)

From very early in my networking career I have been fascinated by protocol details, packet captures and the features of my top 3 application troubleshooting tool: Wireshark.

Getting the captures on the endpoints (clients/servers) is relatively easy but things can get difficult when you want to capture traffic somewhere in between and is hard to do port mirroring (SPAN) on some remote switch.

Packet Capture Capabilities of Cisco Routers and Switches is an old video (4 years is old right?) posted on the Cisco Support Forums that highlights different methods to get on box packet captures in Wireshark .pcap format or in text output.

The video is an hour long but if you’re in a rush I made it easy for you by summarizing the video in an “easy to read” mind map. grouped by IOS, NX-OS and IOS XR. Continue reading

The best way to learn…

Ever since I was a young man my father always told me:

“The best way for you to learn something is to accept the challenge to teach someone”

Teaching was never on my list of strenghts. I ran away from it the best I could until years ago, where I learned that the above statement was in fact true and I started to lose the fear of public speaking. It is only when you try to teach someone you find out the little details we are still missing.

 

Recently I started a similar challenge, not because I was asked to, but because I offered myself to strengthen the knowledge on both sides, the one who teaches and the one who learns. Its a “win-win situation”. A “customized training” to a small group of employees about the fundamentals of routing and the OSPF protocol up to CCNP level.

So… It’s now time to find out a bit about what I still know and refresh whatever has already run away.

Back to the basics!

Books + Books

And remember:

“Knowledge is nothing unless shared and put into practice”

What is “the Cloud”?

During the first ever Expansão Telecommunications Forum (Expansão is an angolan economics newspaper)I spoke to a few people about hosting services. During our conversation, an angolan service provider employee said:

We have cloud hosting in our data center, why don’t you host your services there?

I knew that provider didn’t really offer cloud services but that started a battle in my mind since while I knew the services from that provider were not really cloud, I couldn’t explain why.

So, what is the cloud? Continue reading

Network Collective #6 – What I Wish I Had Known

I recently came across a podcast called Network Collective which is know into its 6th episode. Of course these days there are millions of podcasts but this one in particular is interesting because it touches on a few points with which I agree.

The topic for this 6th episode was “What I Wish I Had Known” and the conversation is around what guests, with many years of work experience, know now but they wish they would know in the beginning of their careers. Continue reading

CCNA Data Center – My Journey

On April 11th 2017, well on the edge and on the last day before the old CCNA DC exams expiring I finally gog my CCNA Data Center certification, more than a year after starting the studies.

Was it hard? Yes, but no so much for the content.

The idea

My journey started with the decision late 2015, with some experience and after putting my hands on some Cisco Nexus switches I decided to go ahead with certification. Continue reading