What Do You Think of Cisco Canceling CCIE Routing & Switching?

Route exchange is very basic, just like most modern people read and write, this is just the most basic ability. Everyone can read and write. How can I get a high-paying job? You have to have a skill.

Cisco knows this deeply, so it re-draws a list of technologies commonly used in corporate networks. After learning these technologies, you can get a job in the corporate network, at least not get hungry on the side of the road.

Let's take a look at the macro outline of this new version of IE certification:

1. Network Infrastructure

It is entirely a routing and switching technology, that is, Layer 2 and Layer 3 technologies, accounting for 30%. It's hard to find a job with routing and switching technology, but that's not to say it doesn't matter, they are important. Such as the same person's ability to read and write, with excellent reading and communication skills, can seek greater development, these principles are very simple.

2 Software-defined Architecture

New content, software-defined architecture is a software technology that Cisco has responded to in the past 5-10 years to meet new requirements. The most typical requirement is that the traditional cost/metric/hop/path based optimal routing technology is static and rigid. In layman's terms, the control plane routing table always determines the flow of user traffic on the data plane. Although the optimal link (40G) is optimal, the bandwidth is saturated, and the suboptimal link (10G) has no traffic at all. If the user traffic provides some feedback mechanism to the control plane, let the traffic that will overflow take a sub-optimal path. This is the most reasonable and can make full use of all physical links. This is just a small piece of software-defined architecture.

3 Transmission Technology and Solutions

This content is relocated from "CCIE Service Provider" and "CCIE Security". It mainly involves two export technologies of the enterprise network.

* MPLS VPN

* DMVPN

These two technologies are basically used in many European and American multinational enterprises. MPLS VPN is usually used as the main egress and DMVPN is used as the backup egress

4 Infrastructure Security Solutions

This is the content of "CCIE Security". Cisco has long understood that if the content of IE certification is not greatly increased, the content of IE certification will become more and more watery. In the end, it will not help the job search. How about it?

Safe learning can't be confined to Cisco. If you immerse yourself in Cisco's finite element space, you will find that you only learn a little fur in the end. That fur will only help you to be proficient in configuring security equipment.

Fully integrated into the study of Internet security, security technology is interlinked, all the security content can be used for learning and research, and the content of security will be integrated inadvertently. When you look at the Cisco exam outline, you will find that security The content is pediatrics.

The secure world is full of fraud and identity theft. In order to protect data security, data is usually only accessible by legitimate and authorized users and hosts. The next question is who is a legitimate user and who is an illegal user?

You will naturally learn authentication technology, from pediatric CHAP technology, middle-aged uncle Kerberos authentication, to the rising star EAP technology framework, and then to the Internet influencer OAuth. The others are very simple. In the authentication technology, there will be some new terms, such as Message Digest, One Time Password, PSK, Symmetric Encryption, Public Key Encryption, Digital Certificate, Digital Signature, and HMAC "," MIC "," Nonce ", etc. As long as you learn the three pieces of cryptography, you can fully understand these keywords. The three pieces are:

Hash

Symmetric encryption

Asymmetric encryption

5 Automation and Scripting

Most students who study the Internet are not interested in programming. In fact, programming is not so scary. Remember the line-by-line configuration commands you wrote down on the router? In fact, that is simple programming, you just use the syntax that comes with the operating system to program.

If you have 100 routers to configure, you can save the configuration commands in Notepad and modify the hostname and IP address to configure 100 routers. Although convenient, you still need to modify the configuration manually.

If you use an automated script, you can write a few lines of code, let the code automatically modify it for you, and then configure it. If you have a ready-made script, you can simply execute it. The script is an AI robot that can replace you to complete many repetitive tasks.

Students who have never used script programming will not think of the power of script. Once they did a project, they needed to create 18,000 tunnels at the fastest speed. If they were created manually, they wouldn't be complete anyway!

It took half an hour to write the script and then execute it. It took only one minute to create all the tunnels successfully. On average, 300 tunnels were created in one second.

Scripts can be executed unlimited times, which can greatly increase labor productivity. If you join Cisco and have script programming experience, Cisco can get started without any training. Cisco likes to recruit this kind of talent!

Finally

If you do not take the training course and pass this exam, it will be amazing and the future is bright. If you pass several overnight versions in the training class, don't be complacent. There is still a lot to learn, and the exam is just fur. For more readers, if you are interested in computer networks, compare this exam outline, study-related technologies with your heart, and make your own network knowledge fully integrated. As for whether you take the exam, it is the same. $ 2,000!