The ancient Western prisons would keep all prisoners in a large house. But managers quickly found that there were many disadvantages. As...

The CRC32 of the Ethernet is relatively strong, but it can only guarantee that the communication on the same network segment will not be...

If I apply for a domain name for my personal website, have I taken up the resources of the DNS root server? If not, whose resources do I...

The network card is set to automatically obtain an IP to access the Internet, but it cannot be accessed by changing to a fixed IP. The...

1. Attitude suggestions If you are new to Linux, you may find it difficult at first, but you must stick to it and follow the existing...

When it comes to operation and maintenance engineers, most people think they repair computers. In fact, the operation and maintenance...

Today I will tell you how to prevent IPv6 VPN breakthroughs. Without a properly configured remote access VPN, IPv6 traffic from remote...

The annual GeekPwn International Security Geek Contest is held in Shanghai. In the past two years, the attack on AI is the most...

Human creativity is as powerful as destructive power." Network interoperability has also spawned complicated routing protocols and...

The meaning of IPv6 Beginning in the 1990s, the IETF noticed that the mainstream version of Internet addresses IPv4 was running out. In...

The main parameters of the core switch selection is scalability, forwarding rate, backplane bandwidth, four-layer switching, system...

Now more and more employees are already on the move: 1.Up to 90% of employees work outside the company's headquarters; 2.Up to 60% of...

At present, enterprise network security issues have become a common concern of corporate management and IT teams. How to prevent and...

When you pass CCIE WRITTEN EXAM, you have to start preparing for CCIE R&S LAB. Although the process is very tired, this day will...

I recently met an old friend who is the IT director of a big company. Because I haven't seen it for a long time that  my old friend has a...

I arrived at Cisco at 7:40 in the morning. I’m on the outside the door of the System building. At the beginning of October, Western...

CGMP: Cisco Group Management Protocol Cisco Group Management Protocol CGMP is primarily used to restrict the forwarding of IP multicast...

"You can't change the environment, but you can change yourself." This is the deepest feeling in the process of learning CCIE. Learning...

1. Question: How does the bgp routing table redistribute the default route? Answer: Method 1: Static routing network Ip route 0.0.0.0...

PASSHOT shares some CCIE Lab learning materials. If you are studying CCIE R&S lab, it will be of great help to you! DIAG If there are two...