【 Weak current College 】 intelligent building LAN networking and implementation

Summary
Information for fast and accurate transmission is the intelligent building intelligent key. Articles submitted using Fast Ethernet technology to establish local area network, you can quickly and accurately meet the message transmission requirements of intelligent building, practice has shown that the effectiveness of this method.
Keyword (s)
LAN Fast Ethernet Server
Since the advent of the LAN from developing very fast. Start just a special operations group of the shared resource now reaches the entire departments or groups not only all staff can share online resources also developed a wide range of applications such as Office, CAD/CAM, the campus network. Not only the network structure more complex dependencies on the network. We not only network continuous reliable work and should be the best possible service to users while ensuring the security of online information. Intelligent building intelligence is in fact reflected in the information exchange is accurate and timely. This article proposes the use of fast Ethernet technology to establish local area network, you can quickly and accurately meet intelligent building information transfer requirements.
1 LAN-intelligent building
Construction
1.1 intelligent building LAN features
Intelligent building information transmission speed and accuracy are the intelligent construction intellectualization of the most important indicators, LAN design focused on this goal. Intelligent building LAN not only to complete the network environment of various resources for monitoring, control and coordination tasks, but also to work on continuous and reliable network to the maximum extent possible, to provide users with online information security service guarantees, at the same time requires all staff can share online resources, data exchange, etc. Fast Ethernet technology to establish local area network, you can meet these requirements.
1.2 intelligent building LAN type selection
To establish a practical network first to select the appropriate network architecture. Currently, the most popular products are Ethernet LAN (Ethernet), fiber distributed data interface (FDDI) and asynchronous transfer mode (ATM). Ethernet is the 1980s launched local network products. Traditional Ethernet as the bus structure structure is simple, easy-to-install, low cost. Advanced Ethernet as the star structure the number of nodes in the network is not restricted to a node failure does not affect the entire network of high running reliability, scalability, better, anti-interference performance is good. Ethernet is often used as intelligent building local networks in the preferred network. The LAN should be able to implement the following features:
(1) according to the local area network, achieving intelligent building LAN resources sharing, exchange of information, each user on the client as a fault management, security management, and application software and tools software is used by platform;
(2) to take advantage of LAN itself, through its network configuration to an Intranet network in order to achieve some of the Internet online service features such as: FTP, www E-mail Internet operation simulation into the environment;
(3) to be designed as an extensible open systems. System through fiber optic module interface and green and external remote network interconnection, to facilitate access to other Internet resources, communicate and exchange information.
1.3 intelligent building LAN software and hardware environment
(1) intelligent building LAN hardware environment: considering the network functionality and price-performance and other factors which a network is 10M/100M switched Fast Ethernet technology it takes full advantage of bandwidth greatly reduce transmission delay. Network equipment and consists of the following:
One D-Link10M/100MFastEthernetSwitch and four D-Link10MFastEthernetSwitch exchange hub, follow the standard 10BASE-T/100BASE-T topology network all sites through NIC with twisted pair to the switching hub.
Network server platform, 2 1 Lenovo wanquan W2200B server as a stand-alone server, 256M memory, hard drive Internet2GCPU 8.4SCSI 10M/100 m automatic adaptation network cards and multimedia configurations. Another server for ASUS P4XP-X motherboard, CPU Celeron 2.2G 512MDDR memory, hard drive, two RealtekRTL8139 80G (A) PCIFastEthernetAdapter100M network card. The primary domain controller as a LAN and the Internet into the Internet proxy server.
Station 40, using ASUS P4XP-X motherboard, Celeron 2 g memory, CPU 256MDDR 80G hard drive motherboard with integrated network card. In addition the network also has HP6L laser printer and S P O N E L Q-1600 K Ⅲ printer each one can realize print sharing.
(2) intelligent building LAN software environment: in order to adapt to today's development, the network server use Windows2000Server operating system. The client uses the Windows2000Professional operating system.
2 smart building LAN basic functions
2.1 intelligent building LAN independent Server features
Because Windows2000Server easy to install, manage, use, provide reliable file and print sharing service and provide strong client/server application structure. With communication and Internet services in support of the Internet and contain Windows2000Server Intranet features network operating system. Especially in the internal network using compatible as a stand-alone server on a stand-alone server uses a built-in Inte Windows2000ServerRnet server software InternetInformationServer (IIS), which enables the server to become an Internet server. In addition we also created significant server resources available for client use the LAN access.
2.2 intelligent building LAN function of the primary domain controller
Considering the device throughput, stability and failure rates, and other factors, the primary domain controller for the intelligent building LAN with Lenovo the original server. The primary domain controller key features enable LAN internal management and Internet proxy.
Intelligent building LAN management service principal management LAN internal, including configuration management, security management, fault management and performance management. Intelligent building LAN configuration management's mission is to identify the device and user online, collect the necessary data, the communication system provides data, and provides a continuous and reliable connection. To keep informed of the network system of topology, the exchange of information, including connection set and before the static connection is dynamically updated information.
Intelligent building LAN security management including security features management and management of information security. Security features of management to provide safe services and security changes of control. Management of information security is to protect the security of the information itself. On any network, information security is extremely important. Safety management task is not to be restricted to authorized users or malicious users on the network access control online legitimate users can only access their own purview of resource protection online processing of information will not be disclosed and transferred. Network operating system to manage a logical access control user access to the network are protected files from unauthorized users will not be free to modify, and delete. At the same time, the workstation user and the local area network users in the same domain, and the same domain, every user has their own domain user account and password to access the control's purpose is to control user access to the online file. A virus is a threat to the enemy of information security should be valued highly, so should be in the servers and workstations are equipped with anti-virus software, so that timely clean viruses.
Intelligent building LAN fault management responsible for system operation and anomaly detection, isolation and correction. Includes alarm report management, event, report management, log control function, test management and diagnostic tests.
The intelligent construction the LAN to find all the business on the LAN administrator can view configuration information, see the server load is too heavy, etc. Through the collection of information on these statistics to help troubleshoot and alerting on major fault.
Intelligent building LAN application requirements in the Internet proxy server. Due to the various services on the Internet are based on TCP/IP protocol but want to access the Internet, each computer must have the NIC distribution of legitimate IP addresses so that applications for large numbers of legitimate IP address wasting large amounts of resources, through the use of a proxy server can resolve the problem. Proxy server has two IP addresses (a legitimate IP, another for the internal use of illegal IP) used by the proxy service software was WinGet or Syagte. Run the proxy service software to accept the internal computer service requests and send this request to legitimate IP address, by sharing a legitimate IP address implementation and international Internet connection; on the other hand use a proxy server on the internal computer visited Web pages to be cached when other computers within a further visit to this Web page will no longer slow WAN connections to a remote host, directly from the local proxy server cache reads. Its cache functionality is so strong that supports hierarchical cache and distributed array cache, you can save significant for users of network communications costs. Its routing feature also provides automatic load balancing and fault tolerance, you can improve system performance and reliability.
2.3 intelligent building LAN client functionality
The client can use Windows98 or Windows2000Professional operating system. According to each client's requirements to install the appropriate software applications and utilities use Windows2000Professional operating system network features a variety of Internet capabilities integrated into one that is in the browser window can be http protocol under the www browser, FTP file transfer protocol, as well as E-mail. As a result of using 10M/100M switched Fast Ethernet technology, the user according to their permissions, you can quickly access and exchange of information within the network.
3 closing
Use Fast Ethernet technology to establish LAN, can fully meet the smart building on information transmission requirements. Practice has proved that the LAN effective, practical, and efficient.