Congratulations to Roy Lexmond on Passing CCDE Practical Exam!
I am very glad to announce that Roy Lexmond from my April CCDE training class passed CCDE Practical exam yesterday in France.
Below is his success story and here is his earlier feedback for the class. I should say that He really likes the design and open to learn new things and very clever.
Please join me to congratulate Roy for his great achievement!
On 19th May in France (Paris) I passed CCDE practical exam. My preparation was done with the cisco learning network excelsheet, Ciscolive video’s, internetworkexpert SP&CCDE courses, Orhan Ergun CCDE Bootcamp and www.orhanergun.net. I attended the Orhan Ergun bootcamp in April-May with lots of great people which helped me prepare well. I really think that the bootcamp helped me to focus on key technologies and discuss them with other people (very important for me) and to understand how to approach the exam.
It was a challenge and took me 2 years, my satisfaction is extreme! and learned alot during those 2 years and still learning. My next goal will be CCIE-SP wich covers some great content inline with the topics the CCDE already covered.
Roy Lexmond
Senior Network Engineer at Routz
CCIE#26557/CCDP/CCDE
I promise to Continue reading
Flat/Single Area OSPF network is not a problem!
Flat OSPF network, or single area OSPF networks are real. In fact most of the OSPF network today deployed, is flat OSPF networks. But how many routers can be placed safely in an OSPF area ? Any number from the real world OSPF deployment ? I will share in this post.
Let me explain what it is first and then will share you some numbers from the real network which I engaged recently.
As you might know, OSPF has two levels of hierarchy. Backbone and Non-Backbone areas.
Why Non-Backbone Areas are used in OSPF?
The reason is scalability and manageability. At least in theory. I don’t see so many multi area OSPF design though I teach in very detail in my CCDE classes. But that is for the exam purpose.
There are some very large scale networks use OSPF for scalability, so, IP but satellite (Sometimes called an Access POP) POPs are in Non-Backbone area they place.
But there is manageability aspects of having multi area OSPF design. They group their slow speed access and metro or aggregation networks in different OSPF areas and place high speed backbone/core routers in a backbone OSPF area (Area 0).
But, we generally forget Continue reading
The EVPN Dilemma
Got an interesting set of questions from a networking engineer who got stuck with the infamous “let’s push the **** down the stack” challenge:
So I am a rather green network engineer trying to solve the typical layer two stretch problem.
I could start the usual “friends don’t let friends stretch layer-2” or “your business doesn’t really need that” windmill fight, but let’s focus on how the vendors are trying to sell him the “perfect” solution:
Read more ...AWS: 5G Is ‘Not the Holy Grail of IoT’
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Prevent lateral compromise with microsegmentation
It’s an unfortunate reality of information security: Eventually, everyone gets compromised. Manufacturers, banks, tech support companies, retail giants, power plants, municipal governments … these are just some of the sectors that have been affected by high-profile data breaches in recent months. Everyone gets hacked. You will, too.
This isn’t cause for despair. It simply means that effective security has to focus on more than just intrusion prevention. Hackers will eventually get into any network, if they’re willing to spend enough time and money doing so. But whether or not they get anything useful once they’ve gained entry—that’s another story.
Good network design can minimize the damage incurred during an attack. There are more ways to approach this than will fit in a single article, so this blog will only focus on network segmentation, and its smaller sibling, microsegmentation.
What is network segmentation?
Network segmentation is the practice of dividing a network into one or more subsections. Each subsection usually contains different kinds of resources and has different policies about who has access to that segment. There are a variety of ways to accomplish the division.
Network segmentation runs along a spectrum from the purely physical to the purely logical. The Continue reading
Amazon Challenges Pentagon’s $10B JEDI Award
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Tech Bytes: SolarWinds’ APM Tools Work Together To Help IT Solve Application Problems (Sponsored)
SolarWinds stops by the Tech Bytes podcast to talk about its Application Performance Management suite, which includes Web app and user experience monitoring, log management and analysis, and app infrastructure monitoring. We look at how they work together to help IT teams get to the bottom of application issues. Our guest is Denny LeCompte, senior vice president and general manager of application management at SolarWinds.Tech Bytes: SolarWinds’ APM Tools Work Together To Help IT Solve Application Problems (Sponsored)
SolarWinds stops by the Tech Bytes podcast to talk about its Application Performance Management suite, which includes Web app and user experience monitoring, log management and analysis, and app infrastructure monitoring. We look at how they work together to help IT teams get to the bottom of application issues. Our guest is Denny LeCompte, senior vice president and general manager of application management at SolarWinds.
The post Tech Bytes: SolarWinds’ APM Tools Work Together To Help IT Solve Application Problems (Sponsored) appeared first on Packet Pushers.
5G NR Demand Skyrockets RAN Market, Dell’Oro Says
In a separate report, Ericsson says the global number of 5G subscriptions will top 2.6 billion by...
AT&T, Juniper Claim 400GbE ‘Firsts’
A recent Dell’Oro Group report forecast that the adoption of 400GbE connections is not likely to...
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BIB 084 Keysight Ixia Visibility and Testing
Keysight took a different approach to this Tech Field Day briefing and spent a lot of time talking about the current state of networking threats and the events that you are protecting against. If you aren’t aware from what your network security is doing, its an good presentation for that. Keysight has many... Read more »BIB 084 Keysight Ixia Visibility and Testing
Keysight took a different approach to this Tech Field Day briefing and spent a lot of time talking about the current state of networking threats and the events that you are protecting against. If you aren’t aware from what your network security is doing, its an good presentation for that. Keysight has many […]
The post BIB 084 Keysight Ixia Visibility and Testing appeared first on Packet Pushers.
Egnyte Architecture: Lessons learned in building and scaling a multi petabyte content platform
This is a guest post by Kalpesh Patel, an Engineer, who for Egnyte from home. Egnyte is a Secure Content Platform built specifically for businesses. He and his colleagues spend their productive hours scaling large distributed file systems. You can reach him at @kpatelwork.
Introduction
Your Laptop has a filesystem used by hundreds of processes. There are a couple of downsides though in case you are looking to use it to support tens of thousands of users working on hundreds of millions of files simultaneously containing petabytes of data. It is limited by the disk space; it can’t expand storage elastically; it chokes if you run few I/O intensive processes or try collaborating with 100 other users. Let’s take this problem and transform it to a cloud-native file system used by millions of paid users spread across the globe and you get an idea of our roller coaster ride of scaling this system to meet monthly growth and SLA requirements while providing stringent consistency and durability characteristics we all have come to expect from our laptops.
Egnyte is a secure Content Collaboration and Data Governance platform, founded in 2007 when Google drive wasn't born and AWS S3 Continue reading