Three main points should be paid attention to in switch selection

In the network application has been very popular today, gigabit network of popular applications are maturing, how to pick a good overall performance of the gigabit switch, both save money and apply, is very important. Especially for some original budget funds, the application of low demand for customers, both to meet the network transmission of high-speed, stable, and inexpensive, then in the selection of Gigabit switch is very important.

First point: on-demand principle

Do not be those functional functions, a wide range of so-called powerful and expensive gigabit switch to spend the eye. Users must be in the decision to purchase before, must carefully make the network needs planning, clear network needs to meet the requirements and performance, do not blindly pursue high-performance multi-functional, because the good function can only be used to get meaning. If the original network upgrade, then make full use of the original network of equipment to reduce investment. In fact, if the demand is not complex, stability and security performance requirements are not to reach the telecommunications level, some domestic gigabit switch is enough to meet the requirements. Therefore, the purchase of the first principle: is to be based on the local area network to establish the principles and needs to choose.

The second point: brand identification

Currently sold in the market gigabit switch domestic and foreign products price gap is large, as a small and medium-sized network and some campus community, such as large network of Working group, select the domestic Gigabit switch is ideal, after all, after several years of development, the current domestic gigabit switch technology has been quite mature, the same level of functional similar products , the price is also relatively stable and basically similar, so be sure to do compare. At present, two-tier gigabit switch in domestic brands such as Huawei, D-link, Tp-link, SPEED networks and other brands are relatively good, are able to provide a more comprehensive gigabit switch products, Huawei and D-link high prices, Tp-link, SPEED Networks prices are slightly lower, from the quality of performance, in addition to Tp-link reworks higher, the remaining three of the performance are good.

The third point: functional evaluation

On the market a wide range of Gigabit switch equipment, users to how to remove the fog, to find their own application characteristics of the product? How to make a choice between the products with more subtle functions? This not only need to start from the traditional switch evaluation index, but also need to see the switch to some high value-added function support.

Generally speaking, the evaluation of the advantages and disadvantages of the switch from the overall structure, performance and function of the three aspects. The overall architecture refers to the port density of the switch device, the maximum speed of the port support, the value of the exchange capacity and other basic performance parameters, so that the user can grasp the positioning and grade of the equipment in general. At present, thousands of gigabit switches from the port are divided into two, one is hundred trillion + gigabit mouth, one is a pure gigabit mouth. The former is a transitional type of gigabit switch, suitable for upgrading from the hundred Gigabit Network to gigabit network applications, Representative products are speed Networks sp2404g series (24 100M + 2 1000M + 2 optical fiber expansion slots) and Tp-link TP-1226 (24 Port 100M + 2 1000M), from the expansion of the provision of ports, the same price compared to sp2404g a little higher than the price. Pure Gigabit Port switches, currently available on the market there are more choices, the author only recommend a speed Networks SP2400GW (24 1000M + 2 Optical expansion slots).

In addition, the performance of the switch, in addition to meeting the RFC2544 recommended basic standards, that is, throughput, delay, packet loss rate, with the increase in user business and application of in-depth, but also added some additional indicators, such as the number of MAC address, routing table capacity (three-tier switch), ACL number, LSP capacity, Support the number of VPN. Take the number of MAC addresses as an example. The number of MAC addresses refers to the number of MAC addresses that can be stored in the MAC Address table of the switch, and the more MAC addresses are supported, the higher the rate of data forwarding. Typically, gigabit switches have a MAC address of up to 4k. such as the speed networks SP2404G offers a 4K;SP2400GW offer of 8k.

Furthermore, function is the most direct indicator of the pros and cons of switching devices. For the general access layer or the small LAN needs of the team-level switches, simple QoS Assurance, security mechanisms, support network management strategy, spanning tree protocol and VLAN is already almost. such as the SP2400GW of speed networks, support includes spanning tree protocol, port mirroring, VLAN (Virtual network Division), Port aggregation, IGMP snooping, broadcast storm control, console port control and Web page management, such as a rich set of features, and provides the enhancement QoS function characteristic, may further enhance the network security as well as adapts the different network application demand, is constructs the medium and small-sized network core Gigabit Switch the best choice.