About vswitch Configuration

The exchange technology allows the shared and dedicated LAN segments to adjust the bandwidth to reduce the congestion caused by information flow between the LAN. The following describes the switch configuration problems, you are welcome to learn more.

All ports of a symmetric switch have the same speed, for example, 1000 Mbps or 100 Mbps. The ports of an asymmetric switch have different speed, for example, 1000 Mbps and Mbps. When you decide to use a Mbps network backbone.

For the configuration of the central switch, select a Mbps symmetric port switch to connect the Working Group switch and the server. For the Working Group switch, select an asymmetric switch. For the Working Group switch, use a Mbps port to connect the center switch and a Mbps port to the computer.

Stack and cascade are two ways to connect a vswitch to expand a port. Stack refers to the use of dedicated modules and cables to stack several switches together and use and manage them as a switch to achieve high-speed connection. Cascade.

A common cable is used to connect the vswitch configurations together (2) to achieve mutual communication. When the stack mode is used, the connection bandwidth between switches is usually greater than 1 Gbps. When the cascade mode is used, the maximum bandwidth is only 1 Gbps. However, because stacking requires dedicated modules and cables, the price is relatively high. It is recommended that Internet cafes adopt a cascade approach.

Because the space of Internet cafes is very valuable, we should minimize the space occupied by network devices. A rack-mounted switch should be selected and fixed to a standard cabinet, which can save valuable space and facilitate power supply and management.

When purchasing, pay attention to the following main parameters:

Port

To purchase a working group switch, we recommend that you select a 10/100 Mbps switch with 24 or 48 ports, and a Mbps L3 switch with fixed ports be selected for the center switch. Although the Mbps port has a higher transmission rate, it is not recommended for price reasons. In addition, the size of the Internet cafe is usually small, from the switch to the Computer distance is generally within 100, therefore, cheap RJ-45 port is more suitable for Internet cafes.

Forwarding Rate

The forwarding rate is a very important parameter for vswitch configuration. It fundamentally determines the forwarding rate of the vswitch. The forwarding rate is usually expressed as "Mpps" (Million Packet Per Second, millions of packets Per Second), that is, the number of packets that can be processed Per Second. The larger the value, the stronger the switch performance.

Board bandwidth

The backboard bandwidth refers to the maximum amount of data that a vswitch interface processor, interface card, and data bus can process. Because communication between all ports must be completed through the backplane, the bandwidth provided by the backplane becomes the bottleneck for concurrent communication between ports.

The larger the bandwidth, the higher the available bandwidth that can be provided to each communication port, the faster the data exchange speed. The smaller the bandwidth, the smaller the available bandwidth that can be provided to each communication port, the slower the data exchange speed. Therefore, the higher the bandwidth, the faster the switch transmission rate.

Cache

Cache is used to temporarily store data waiting for forwarding. If the cache capacity is small, the data will be discarded when the concurrent traffic volume is large, leading to network communication failure. Only when the cache capacity is large can we provide better overall performance when the multicast and broadcast traffic is large, while ensuring the maximum possible throughput. Currently, almost all cheap switches use the shared memory structure. All ports share the switch memory, balance network loads, and prevent packet loss.

MAC address count

Each vswitch maintains a MAC address table, which records the relationship between the MAC address and the port, and forwards the access request to the corresponding port based on the MAC address. The more MAC addresses are stored, the higher the speed and efficiency of data forwarding, and the stronger the anti-MAC address overflow supply capability.

Having mastered the knowledge described in the above sections, you must be able to improve your understanding of Internet cafe switches, so as to know how to select products suitable for you. With the increasing expansion of numerous Internet cafes, the network structure is constantly expanded and the construction is stable.

The efficient network environment has become a fact that many Internet cafe owners have to face. In this case, the majority of owners need to carefully select and carefully choose to build an efficient network with cost-effective products. This article should be able to play a major role in helping the majority of owners buy Internet cafe switches.

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