How should enterprises select dual-ADSL access lines?

The dual-ADSL Access Line has become the best choice for small and medium-sized enterprises to access the network. The question also arises: how should enterprises choose the dual-ADSL Access Network? For small and medium-sized enterprises, if leased line access is used in the selection of access services, it is likely that the cost will greatly increase the overhead and burden of enterprise operations, however, there is a problem of low speed through dialing or ADSL access.

I believe many enterprise network directors have encountered the above problems. How can we design a network that can ensure bandwidth access and minimize access costs? Today, I am going to work with the network administrators of small and medium-sized enterprises to see how we can find the best balance between speed and price.

I. What kind of access method is best cost-effective:

For small and medium-sized enterprises, the most common access methods include optical fiber access, DDN access, ADSL Access, and dialing. In comparison, fiber optic access and DDN leased line access speed is relatively fast. You can select the bandwidth as needed, but the corresponding price is also very high. Even if the price of 2 m fiber optic is larger than 2000 yuan per month, however, the Telephone Dialing method is relatively inexpensive and requires dialing. After successful dialing, the cost is calculated. However, this method is only suitable for domestic users. For enterprises, it takes working days to connect to the network, in addition, currently, the traditional dialing service has very few monthly subscription services. Therefore, the price and speed of ADSL access are relatively balanced, the privately-installed dual-ADSL Access Line in Beijing can enjoy the 150 yuan monthly 1 M bandwidth service, even if the company installed the dual-ADSL Access Line monthly fee will not exceed 600 yuan.

However, when we select to use dual-ADSL access lines to access the network, the speed also has some problems. After all, ADSL provides asymmetric services such as PPPOE dialing, the upload speed and download speed are severely asymmetrical, and the 1 mbps bandwidth cannot meet enterprises' efficient applications. Therefore, we can apply for multiple ADSL lines to compensate for the speed shortage, in terms of price, even the combination of multiple dual-ADSL access lines is much lower than the cost of leased line access and optical fiber access. Therefore, the combination of multiple ADSL lines is the best way for small and medium-sized enterprises to save money, while saving money and ensuring network transmission speed to a certain extent.

2. How to save money and effort for dual-ADSL line enterprise networks:

Since the dual-ADSL Access Line is selected to provide Internet access, how can the enterprise network of the dual-ADSL Access Line be implemented to save more money and effort? Below I will list several of the most common two-line access methods. We will compare and select the best implementation method.

(1) Multi-Wan port routing access method: (1)

Some enterprises begin to bind multiple dual-ADSL access lines through multi-WAN port access. they purchase a multi-WAN port router and then connect different dual-ADSL access lines with different WAN ports, then, the routes can be shared through the router's own load balancing or routing policy. However, the price of Multi-Wan Port Routers on the market is also above RMB. For small enterprises, the cost of fiber-optic leased line access is also charged for purchasing multi-Wan Port Routers.

(2) multi-line access provided by server Proxy:

Some enterprises choose to use one server to establish a proxy service to save the overhead of the Multi-Wan port router, and then install multiple NICs on the server. Two NICs connect two ADLS lines, however, if another Nic is directly connected to an intranet switch or other employee computers, this method saves the cost of purchasing a multi-Wan port router, however, when the number of computers in the enterprise intranet is large and the number of application services is large, the server load increases. Therefore, this method has high requirements on the server hardware performance, enterprises may also need to upgrade their existing servers. In addition, they must ensure that the server is enabled during network access, which also brings trouble for maintenance.

(3) multi-line access provided by virtual routing software:

Previously, we also introduced how to use virtual routing software to build an old-fashioned computer into a professional Routing Switching Device, by installing multiple Ethernet cards for an old-fashioned computer to simulate a route Exchange Device with multiple Ethernet interfaces, this method is feasible, but the virtual routing software has many functions that need to be registered for use, enterprises need to purchase the corresponding license agreement. In addition, during actual use, the equipment simulated by the virtual routing software performs average in terms of multi-line access and advanced route management, it cannot be compared with the performance of a real routing switch device.