Wassim

Here are my study notes on the topic of Cisco ACI VRF. We start by defining some terms then see how VRF is configured. ACI VRF: Definitions A VRF, aka private network, is pronounced V-R-F or “Vurf”. It is the equivalent to the legacy VRF concept, in the sense that it scopes an IP namespace, or subnets. So “IP addresses” in an ACI VRF_A are different from those in an ACI VRF_B, even if they were numerically identical. A network engineer can design his IP scheme in that way. But this situation will present challenges if he one day wanted to expose the subnets of both VRFs to the external network. In fact, any given subnet in an ACI tenant addressing space must be unique only VRF-wide. So you can have the same subnet ID on two bridge domains. But they have to belong to two separate VRFs. A Cisco ACI VRF is attachable to one or more bridge domains. APIC can be instructed to confine the subnets within a given VRF, to propagate them to other VRFs, or to allow redistri...

Here are my study notes about Cisco AEP in ACI. Attachable Access Entity Profile AEP: Definitions The Attachable Access Entity Profile binds the logical tenant configuration to the physical fabric access policies. It can be vaguely compared to the CLI command “switchport trunk allowed vlan” in traditional switching. It is required for attaching external devices and servers to the ACI fabric. The ACI AEP links the following ACI constructs together: Interface Policy Group : one-to-many relationship, which means that one AEP can be attached to more than one Interface Policy Groups) ACI Networking Domains : remember when I wrote that a Domain is associated to a VLAN Pool ? The ACI Domain grouped the VLANs in a single location, and AEP brings them to the fabric access interfaces, so that the interfaces accept traffic from those VLANs. There is one-to-many relationship between AEP and Networking Domains, which means that a network engineer has the possibility: to link one AEP to o...

I am going not to talk about being distracted for an hour, a day or even a week. I am talking about year long distraction, the kind of distractions that deviate you from the person you wanted to become… one day. I was filling some applications online and I stumbled upon an exam paper issued by my high school: Lycee Pilote Ariana exam sheet – Graduation Year 2002/2003 It is the graduation year that followed mine. This exam sheet was taken by high school pupils, 9 months after my high school graduation in 2002. I took some minutes to contemplate the content of this exam sheet. Boy did I do this kind of stuff when I was younger? To be able to solve three Math exercises, two in Algebra and one in Geometry, all under two hours, with no “practice exams” available to us at that time, with all the fucking stress of a naive pupil back then, with no perspective into the future other than to study and hope for a better tomorrow. Yes, with no perspective. I was a regular guy...

You probably read about the Cisco exam update launched recently. A lot of folks are consequently studying harder to reach the deadline of february 23rd. 2020, let alone those who are studying for one-of-its-kind-exam; the Cisco ACI exam. As my CCNP status is also at stake I needed to pursue one exam to renew it. Since I did two trainings in ACI as part of work requirements and owned Cisco Press ACI books, it definitely makes sense to study for the CLDACI exam. Goal: I pass CLDACI exam successfully by February 1st, 2020. Time to achieve: 5 Months. Cisco CLDACI 300-475 Exam Blueprint My Collection of Cisco ACI Exam Study Material (Paid) Cisco Press: The Policy-driven Datacenter with ACI Packt Publishing: ACI Cookbook : good resource you can use to see how we configure things in ACI, because it includes a lot of screenshots. Cisco Press: Deploying ACI : This was my favourite and my main study ressource. Pluralsight, Fundamentals of Using Cisco ACI : there are two good introductory cour...

I got a call from a property owner. She announced to me that I was accepted to rent her apartment if I still am interested. I was very happy! I signed the contract on the 28 of December. I called my family and told them the news. My wife cried of joy. Although Germans recommend to have a ratio of one third when it comes to rent compared to salary, I did not know about that. And even so, it does not matter because I am going to spend almost half of my salary on rent. Munich is a great place to live and work. But to be selected by the property owners is a fucking real nightmare. Don’t take my word for it, ask your German friends in Munich. Or if you have some balls, come to Munich for a job position and try to get a suitable rent.

In this quick tutorial we learn how to get Postman, how to install it and how to use it to connect to Cisco ACI . Getting it from Chrome Postman was popular with its extension for Google Chrome. So the first thing you probably did is navigating to Google Chrome Web Store and downloading the extension. Then to access the Postman extension, type on the following URL on Google Chrome: chrome://apps/ You should see an icon now: A window loads for seconds then displays the following message: This Chrome App is being deprecated. You can ignore the message and continue to the next menus. The Postman dashboard will load normally. But I recommend to use the native App instead because it will be the future of Postman development, which takes us to the next paragraph. If you installed both the Chrome extension and the native app, then they will both appear on your computer. Click on this icon: Native app Go to Postman webpage and download the version that fits your computer OS. Run the normal in...

The hurdle started a couple of days ago. My strategy is to consult all websites that have to do with properties. The best one was Immoscout24. I downloaded the application. I prepared my Selbstauskunft , attached a copy of the payslip and a SCHUFA . It is a marathon. When you are serious about it, you ought to send applications every fucking day and then expect a reply. I sent at least 6 new applications daily and some more reminders to the previous one who did not respond to me. I checked my emails frequently to the point I forgot how many times it was: in public transportation, during lunch, at work (I asked for a permission from my manager to consult my private phone all day long, and she was completely OK with it), at home, in the toilet, etc. Whenever I get an invitation to an apartment visit, I plan it, tell my boss about it and go to it. Sometimes it happens during work. Thank Allah that my boss was understanding of my situation. I went on this routine for about 3 months in a ro...