Unique application of rihai optical fiber distribution frame in the subsystem of buildings (1)

Architecture subsystem wiring requirements

The Integrated Wiring System is the "highway" of the network system. It undertakes the task of safe and effective data and voice transmission and is the most basic component of the Weak Current System. Integrated Wiring adopts an open structure and can be divided into seven subsystems: work zone, wiring subsystem, trunk subsystem, building group subsystem, equipment room, cabling room, and management zone, it can be summarized as "Two, two, three subsystems", while the building group subsystem can look at the "neural Hub" of the Integrated Wiring System ".

In the network construction of large campus buildings, if you want to interconnect the communication links of two or more buildings, outdoor optical cables are usually laid between the buildings. In this way, the core network of a large campus is the lifeline of the entire campus network. In the past, only 20% of LAN communication had reached the core network. Most of the operations were completed by a personal computer, and files were stored and accessed locally, file Sharing is rare. However, today, the situation has changed dramatically. It is estimated that 80% of all traffic needs to be transmitted through the campus core network. Currently, applications adopt centralized services, and users' files are stored on servers. File Sharing and sharing are common. The increasing demand for various types of online video applications and the enhancement of personal computer multimedia processing capabilities have all increased the burden on core networks and must be able to handle this increasing demand.

The core network of a large campus must be able to provide high-speed data exchange, requiring high reliability, stability, and scalability. A high-performance, high-reliability network structure is required. Generally, a highly reliable ring network topology or redundant mesh topology is used to build a "Neural hub" core network platform for the whole park.

Ring topology

Mesh Topology

Cross-connection mode

Two connection methods are defined in the cabling standard. One is interconnection and the other is cross connection. As shown in:

Interconnect

Cross join

It can be seen that the cross-connection method adds a connection point, although the interconnection connection method improves the transmission performance, it is more economical. However, the management convenience and reliability of the cross-connection are incomparable. The optical fiber cables connected to the two ends are fixed and considered as permanent connections. When you need to move, add, and replace the patch cord, the maintenance personnel only need to change the Jumper between the distribution frame, and the connection method is difficult to avoid the need to unplug the Jumper between the switch and the distribution frame port at the same time. Cross-connection is undoubtedly the best choice for the core of the network, which regards fast recovery, reducing misoperations and ensuring normal operation of device ports as the most basic requirement. After all, it is wise to avoid exposure to sensitive device ports during routine maintenance. Only the cross connection method is the most reliable, flexible, and persistent connection method.

Application of cross-connection in Building Group Subsystem

The cables are divided into permanent fixed optical fiber cables and jumper cables by means of cross-connection. The optical cables from the vswitch device are usually fixed at the rear of the wiring device as permanent cables, and cross connections are made through the front jumper of the distribution frame. When the cross-connection system needs to be changed, the permanent connection part of the cross-connection area is not changed. All that is required is to change the connection jumper. during routine maintenance, try to avoid access to sensitive device ports. We use two cases to illustrate the application of cross-connection in the subsystem of buildings.

Case 1

Requirements

There are three buildings, including the Network Center, building A, and building B, which may actually contain more buildings ), the Network Center is connected to the branch network of Building A and Building B through optical cables. <The branch network is backed up on the interconnection network link of both the and B buildings .)

Traditional solutions

Re-lay A cable between buildings A and B

Recommended Solution

Cross-connection is adopted in the Network Center. Connect the optical cables from the and B floors to the network center directly through jumpers, such.

Advantages: The user's investment is reduced, and there is no need for flexible allocation and scheduling of optical fiber cables; network topology changes; flexible deployment; improved actual utilization of Optical Fiber