D-link Community Broadband Wireless Network Solution

The continuous deepening of the network application, people's dependence on the network has become more and more strong, has been the work and life of people are indispensable tools. But as the environment changes and the needs of the way to update, Mobile has become the trend of network office, and the current wired network inherent use of blind spots gradually emerged, such as: The limitations of the environment, inflexible service methods and so on. Wireless LAN solution as a complementary form of wired network, more and more recognized by the industry, it can provide flexible, convenient network solutions, free from the environmental limitations of the wired network, enrich the mobile office of the combination of ways, but with the spread of wireless local network, some of the problems inherent in the network has gradually emerged, Users need an efficient and secure wireless network, the main problem is how to protect the broadband rate and network security problems. Based on the above factors, friends of the network for the community environment designed a set of broadband wireless network solutions.

The whole scheme is designed for the community broadband access demand and network operating environment personalized design, in the community center room with two-layer Ethernet switch des-3624i, through with the core backbone switch DES-6300 link to the Internet. The two-tier switch uses a tiered design to enable easy network expansion. In the access mode adopted wireless access, according to the actual office of the community, you can place a dwl-900ap+ in each office. Each dwl-900ap+ can take 20-30 end users, support network devices up to 22Mbps speed, and fully compatible with the IEEE802.11B standard so that it can be used with existing 802.11b devices.

The wireless network in the indoor environment of the application range of 30-100 meters, in the outdoor environment to 100-400 meters, through the AP relay mode and multiple cellular roaming way to expand coverage. As an effective supplement and extension of wired broadband access solution, this scheme can solve the demand of broadband access for multiple users in the open environment of the community, such as: Conference Room, Hall, large bay and so on. This program can also be applied to hotels, trade fairs, temporary venues or large storage supermarkets.



D-link Wireless Application Solution topology Map

From the perspective of the entire project architecture, this scheme can not only realize the flexible, mobile, low-cost and easy installation of other wireless solutions, but also make the whole network feature more characteristic by using dwl-900ap+ in the whole wireless solution, which is shown in the following two points:

1. Flexible construction, enjoy broadband speed

The choice of dwl-900ap+ is a 2.4GHz enhanced Wireless LAN access node, which uses the PBCC technology of TI (Texas instruments) company, so that the network speed can reach 22Mbps transmission rate, In the standard 802.11B network, the whole network is improved by 20% transmission rate, which realizes the wide network construction. At the same time, the product compatible with the IEEE802.11B standard, and the existing 802.11B equipment to achieve interconnection and interoperability, to ensure a smooth upgrade of the network, saving investment costs.

Dwl-900ap+ provides 4 modes of transmission that allow users to create work modes flexibly, and 4 modes of transmission are: as wireless network access nodes, as point-to-point bridging devices communicating with other access nodes, as point-to-point wireless bridging devices or as wireless clients. Users can use different modes of work according to their needs, through the use of multiple access points to connect with the wired network, forming a wired network as the backbone of the multiple access point of the wireless network, so that all wireless terminals through the nearest access point access to the network, access to the entire network of resources, which can break through the limits of wireless network coverage radius, Resolves the embarrassment of a user exceeding the coverage radius of a single access point.

2. DHCP and high node encryption to achieve efficient and secure network

With the development of network application, the consciousness of network security tends to mature, and the security problem becomes the focus of network users. However, because the wireless network is open, all terminals in the coverage area can access each other, in order to ensure network security, this wireless scheme in addition to through the firewall to improve the safety of the network, but also in the wireless access to the use of dwl-900ap+, the product support 256-bit WEP authentication, Provides a higher level of security and wireless communication for the user's data transfer. and network wireless network products are supported 40-bit WEP encryption, and can be expanded to 256-bit.

The dwl-900ap+ has a built-in DHCP server, and when the DHCP service is enabled, the network can automatically assign IP addresses to connected wireless clients without using a separate DHCP server on the network. This special feature allows you to quickly establish a wireless network, such as an office environment or other temporary work environment, that users need at any location. In this way, the user has brought great convenience, so that users can effectively use time, improve work efficiency.