Please don’t register to South Africa/Johannesburg CCDE Class, it is full !
Hi Everyone,
I would like to inform you that Instructor Led CCDE Class in South Africa/Johannesburg Training is full. So please don’t register for it.
Having more people will reduce the time required for discussions. Those who attended any of my earlier class know that we have already very packed agenda, approximately 2000 pages documents and so many real life discussions in 5 days. Hopefully we will schedule another training session in SA next year, and please when I announce, just hurry up for registration.
I will be in Johannesburg between May 13 – 18, if you would like to meet me, please send me an email to [email protected]
Even if you are not considering any network design training, still that is okay, would like to meet and know as many network engineer as I can while still I am able to 
The post Please don’t register to South Africa/Johannesburg CCDE Class, it is full ! appeared first on orhanergun.net.
Telecom Operator Network Design Training
I missed writing , missed writing a post lot on the website specifically !. Because I know you are reading right now and wonder where I have been.
I just checked and seen that my last post was on October 26. More than 2 months , I didn’t share anything on the website. I wanted to come here and share something , technical or social , but believe me guys November and December 2017 was so busy from my side.
One of the activity which took my time during this period was Telecom Operator design training which I did in Kenya/Nairobi on November. Safaricom Kenya – Incumbent Telecom Operator/Internet Service Provider.
It was 5 days training and IP/MPLS Backbone planners , Transport network engineers, mobile access and core engineers , fix and mobile wireless service engineers (They have very good fiber penetration in the country) many people attended this training.
Most of the topics were from my CCDE training blueprint but after couple discussions with their lead engineers, we removed CCDE Practical scenarios and couple other topics , as they won’t attend CCDE exam , but added other technologies which they are considering to implement and some of those technologies is Continue reading
CCDE Practical/Lab Exam Result Policy
Many of my students have been asking whether CCDE Practical/Lab Exam Result policy is still the same.
As you might know after CCDE 2017 May exam cancellation , practical exam results can be learned after 8 to 12 weeks. This mean, if you attend CCDE Practical exam, you cannot learn the result (Pass or fail) on the same day. It was the case until CCDE 2017 May exam.
You used to finish the 8 hours exam and when you click the end exam button, exam result was just there !
This is not the case anymore. Last CCDE Practical exam was on November 2017 and the attendees are still waiting their results as of today. There is no any new announcement by Cisco and I would expect the same thing for February 27, 2018 CCDE Practical exam.
Learning exam result is good probably for the exam security but I hear complaints from the students and i think some of my readers are thinking the same.
They say, if they knew that they failed , they could schedule the next exam. Exam results of the previous one arrives right before the next one , thus , candidates cannot find a time to Continue reading
What is GLBP and where GLBP should be used?
GLBP stands for Gateway Load Balancing Protocol. In this article, I will explain where GLBP is used , where it shouldn’t be used with the topologies.
GLBP is a Cisco preparatory protocol. In most networks, design requirements might be to use only standard based protocols. If that is the case, GLBP is not a standard based protocol and business cannot use it.
Unlike HSRP and VRRP, GLBP supports flow based load balancing.
HSRP and VRRP can only supports active/standby redundancy or Vlan based load balancing.
GLBP was invented to provide an active-active traffic forwarding the network traffic but there is almost no use case in today networks.
In some cases, GLBP has create more problem than it should solve.
Figure – GLBP at the Enterprise Internet Edge
In the above picture, I depict classical Enterprise Internet edge network. Firewall, Layer 2 switch and Internet Gateways.
Service Providers don’t use stateful devices such as Firewall at the Internet edge.
If in this network, GLBP is used, firewall would send an ARP for the default gateway and only one of the Internet Gateway routers would be used as a default gateway. If there would be two firewalls, another firewall could Continue reading
What is Urban and Rural area in networking ?
What is urban and rural area ? What is underserved area in networking ?
These definitions are heavily used in networking. And all broadband network designers take always these definitions into an account while they do their design. I think knowing these definitions as a network engineer is valuable for you.
In general, a rural area or countryside is a geographic area that is located outside towns and cities
Whatever is not urban is considered rural area though some people uses less populate than urban but more populated than rural area as suburban area
Typical urban areas have a high population and large settlements
Typical rural areas have a low population density and small settlements
Underserved areas where there is no good network coverage (Broadband , Voice or any other data types)
Unserved areas where there is no network coverage at all
For example,if mobile operator will place a cell sites in an urban area, since the population density will be too high, they consider to place more cell sites than if they place those cell sites in a rural area.
FTTx planers consider to change their ODN (Optical Distribution Network) design entirely depends on they are doing FTTx deployment in Continue reading
The IPv4 party is over
The post The IPv4 party is over appeared first on Noction.
Is There a Future for Networking Engineers?
Someone sent me this observation after reading my You Cannot Have Public Cloud without Networking blog post:
As much as I sympathize with your view, scales matter. And if you make ATMs that deal with all the massive client population, the number of bank tellers needed will go down. A lot.
Based on what I read a while ago a really interesting thing happened in financial industry: while the number of tellers went down, number of front-end bank employees did not go down nearly as dramatically, they just turned into “consultants”.
Read more ...SD-WAN Vendor GTT Ditches Its Infrastructure Division
The company picked Credit Suisse and Goldman Sachs to help offload non-strategic infrastructure...
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Dell Posts Mixed Q3 Amid RSA Sale Rumors
Bloomberg reported earlier today that Dell Technologies is considering selling RSA Security for at...
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Nutanix Q1 Wows Wall Street, CEO Warns Bloody Oceans Ahead
“It’s a very large market, and large markets are red oceans. Red oceans are whales and red...
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Full Stack Journey 036: Starting Your IT Career With Kori Younger
Today's Full Stack Journey goes back to the beginning with an IT pro just getting started in her career. Kori Younger is a recent college graduate planning on a career in IT. She and Scott talk about how she's prepared for this career, college vs. certifications, the role of dinner-table conversations and their influence on career choice, diversity and inclusion, and more.
The post Full Stack Journey 036: Starting Your IT Career With Kori Younger appeared first on Packet Pushers.
Full Stack Journey 036: Starting Your IT Career With Kori Younger
Today's Full Stack Journey goes back to the beginning with an IT pro just getting started in her career. Kori Younger is a recent college graduate planning on a career in IT. She and Scott talk about how she's prepared for this career, college vs. certifications, the role of dinner-table conversations and their influence on career choice, diversity and inclusion, and more.
HPE Q4: Intelligent Edge, Hybrid IT Revenues Slump
CEO Antonio Neri cited deliberate action to realign HPE’s portfolio along with macroeconomic...
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Nokia Kills COO Role Amid Struggles
Current COO Joerg Erlemeier will leave the company after a 25-year run on Jan. 1. His functions...
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Palo Alto Acquires Aporeto for $150M, Posts Mixed Q1
The acquisition will enable customers to secure their applications at scale. Meanwhile, weak Q2...
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What Is a Man in the Middle (MITM) Attack?
Simply put, MITM is an attack in which a third party gains access to the communications between two other parties, without either of those parties realising it. The third party might read the contents of the communication, or in some cases also manipulate it. So, for example, if Gerald sends Leila a message, intending it to be private, and Max intercepts the message, reads it, and passes it on to Leila, that would be a MITM attack. If Gerald wants to transfer £100 to Leila’s bank account, and Max intercepts the transaction and replaces Leila’s account number with his own, that would also be a MITM attack (in this case, Max is putting himself ‘in the middle’ between Gerald and his bank).
Why should I care?
Partly because MITM attacks can undermine so much of our modern way of life. In a connected life, we depend on the reliability and security of every connection. It’s not just about your conversations, messages and emails, either. If you can’t trust the connections you make to websites and online services, you may be vulnerable to fraud or impersonation, and if your connected devices and objects can’t communicate securely and reliably, they may put Continue reading