Will the disadvantages of layer-3 switching affect its prospects?

Whether the disadvantages of layer-3 switch technology affect its prospects. In terms of price, the prices of layer-3 switch products are generally at least 10 thousand yuan. The sales of L3 switches in the entire switch market account for a large majority.

Lack of layer-3 Switching Technology

The disadvantage of layer-3 switching technology is that, although layer-3 switching technology enables users to obtain a non-distorted data exchange rate of 100 Mbps and Mbps between Working Groups. However, there must be a prerequisite for all this, that is, only when both the user and the server can keep up with the increasing bandwidth in the network.

Packet transmission can reach the system limit, that is, the maximum speed that the CPU can process is truly successful. At present, the main problem is to improve the server capabilities, because more and more powerful functions of the workstation connected to the Ethernet switch desktop, the user's desktop capabilities have not been fully utilized.

If the server capacity can meet the requirements, the problem can be easily solved. The disadvantage of layer-3 switching technology is that it takes a lot of time to upgrade the CPU of the most simple Symmetric Multi-processing server and requires lengthy and complicated planning and management. When the basic structure of a network is built on Layer 2 and Layer 3 switching of G bit rate, there is a high-speed WAN Access, the server problem will become a bottleneck.

That is to say, if the server speed does not keep up, even the network with the fastest exchange cannot completely ensure end-to-end performance. It can be imagined that high-priority businesses will be blocked due to the low-priority service queue on the server in this QoS-Enabled Network.

In the worst case of layer-3 switching technology, servers may even lose the ability to process services cyclically. In this context, the layer-4 Exchange Technology is also designed, layer-4 Switching Based on the server design extends the performance and business flow management functions of the server, layer-2, and layer-3 switching.

Market and Prospect Analysis

Here we have a set of data: rack-mounted switches with a bandwidth of more than 30 Gbps for high-end switches, which are generally three-or three-tier switches; the backboard bandwidth of a mid-range switch is a box switch between 8 Gbps and 30 Gbps. Some of these switches are L3 switches. The bandwidth of the backboard of a low-end switch is generally less than the bandwidth of the 8 Gbps access layer two-layer box switch.

High-end switches are generally used in the telecom market and some non-telecom markets with a high degree of informatization, such as banks. Low-end switches are widely used in the telecom and non-telecom markets. From the above data, we can see that the sales of L3 switches in the overall switch market account for a large majority.

The sales amount has been greatly increased. In terms of price, the prices of layer-3 switches are generally at least 10 thousand yuan. As the prices of layer-3 switch products continue to decline, the cost-effectiveness of the products continues to increase, and the market space for improvement is also expanding.

Summary of the disadvantages of layer-3 Exchange Technology: The layer-3 technology has become the main force in building multi-service converged networks from the equipment originally designed to solve the broadcast domain problem, layer-3 switching technology and layer-3 switching equipment have made great strides. The development of these technologies will certainly promote the information revolution of the whole society in a deeper level, and gain an increasingly important position in the entire network.