The layer-2 switching technology is mature. The layer-2 switch is a data link layer device that can identify the MAC address information in the data packet and forward it according to the MAC address, the MAC addresses and corresponding ports are recorded in an internal address table. The specific workflow is as follow
L2 exchange technology:The layer-2 switching technology is mature. The layer-2 switch is a data link layer device that can identify the MAC address information in the data packet and forward it according to the MAC address, the MAC addresses and corresponding ports are recorded in an internal address table. The specifi
(1) Differences Between Layer 2 switches, Layer 3 switches, and Layer 4 switches
The layer-2 switching technology is mature. The layer-2 switch is a data link
choices, what are the 2-tier, 3-tier, and 7-tier switching technologies, and what are their respective environments?
The traditional layer 2nd Exchange technology
The 2-layer switching technology can identify the MAC address information in the data frame, forward according to the MAC address, and record the MAC address with the corresponding port in a MAC addr
investment by manufacturers in key network equipment, so that in a very short period of time, the emergence of a traditional second-layer switch, to the Advanced Layer-3 Switch, to the latest layer-4 or even
Exchange technology is moving in two directions. One Direction is faster and faster, has jumped from the gigabit to the million trillion.
Another direction is from the initial 2-tier exchange to the 3-tier exchange, which has now been developed to the seventh layer of the Network application layer Exchange.
Figuratively speaking, the speed is more and more fast
the requirements of policy-based networking, advanced QoSQualityofService: service quality) and other service improvements. The huge market potential has greatly stimulated significant investment by manufacturers in key network equipment, so that in a very short period of time, the emergence of a traditional second-layer switch, to the Advanced Layer-
(1) The animation effect here refers to the interface switch animation effect, we often fade in and out, right out of exiting and so on, of course, there are some advanced animation, this animation suitable for the game class, for the general app will appear too fancy.(2) We do not add any framework (Quartzcore) here or import any header files (QuartzCore.h), you can create an object, such as Animation1, directly with Catransiton (the subclass of Caan
ease the pressure on the network core system is too high.
To this end, the industry has to begin to consider the fourth-layer switch concept to meet the requirements of policy-based networking, advanced QoSQuality of Service: Service quality) and other Service improvements. The huge market potential has greatly stimulated significant investment by manufacturers in key network equipment, so that in a very s
-based networking, advanced QoSQuality of Service: Service quality) and other Service improvements. The huge market potential has greatly stimulated significant investment by manufacturers in key network equipment, so that in a very short period of time, the emergence of a traditional second-layer switch, to the Advanced Layer-
investment by manufacturers in key network equipment, so that in a very short period of time, the emergence of a traditional second-layer switch, to the Advanced Layer-3 Switch, to the latest layer-4 or even
The development of switch technology is very rapid. From the third-layer switch technology to the fourth-layer switch technology, the experience is very short, meeting more needs of users. When I first heard the word "Layer
Two-layer switchThe development of the two-layer switching technology is quite mature, the two-layer switch is a data link layer device, which can identify the MAC address information in the packet, forward according to the MAC address, and record the MAC address and the cor
Compared with the layer-3 switch, the layer-4 switch has a good improvement in its functions and features. Here we have explained the basic knowledge of the layer-4 switch. The amount o
networking, advanced QoSQuality of Service: Service quality) and other Service improvements. The huge market potential has greatly stimulated significant investment by manufacturers in key network equipment, so that in a very short period of time, the emergence of a traditional second-layer switch, to the Advanced Layer-3
of software technology-oriented, network Management switching device supplemented by hardware technology. The layer-4 switch supports all protocols below the layer-4 of TCP/UDP, such as HTTP, FTP, Telnet, and SSL. It can recognize the packet header length of at least 80 bytes, the application types of data packets can be distinguished based on the TCP/UDP port n
The layer-4 switch actually adds the ability to identify the layer-4 protocol port in the layer-3 Switch, meeting more user needs and improving the performance. In recent years, with the popularization of G, 1g, or even 10g LAN.
T
The layer-4 switch is quite common. So I studied the comprehensive application of the layer-4 switch and shared it with you here. I hope it will be useful to you. With the popularization of broadband and the deepening of various network applications, our local network is undertaking heavy business traffic.
The amount o
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