Application of 3Com Gigabit Ethernet in campus network of Three Gorges University

Requirement Analysis

The Three Gorges University is a provincial general full-time undergraduate college with the approval of the State Education Commission. There are three secondary colleges, namely School of Medicine, Normal College, and Institute of Technology, with 15 departments and 45 specialties.

With the continuous development of computer and local area network applications in various organizations, especially various computer application systems have been applied in practical work, the requirements for mutual exchange and sharing between units and external information media are increasing. It is necessary for all units to truly achieve efficient information exchange and resource sharing among each other, so as to provide accurate, reliable, and fast production data and information for leaders at all levels of each unit, make full use of the functions of existing computer devices of each organization.

Network Construction Principles

According to the specific situation of the Three Gorges University, the following principles should be observed in the planning, design and implementation of computer networks:

1. Fully considering business needs and business development trends, it is practical, flexible, secure, and advanced. The construction of the entire network should be continuous, and existing investment should be protected to make full use of existing computer and communication resources.
2. The network reliability is high. On the basis of considering the existing communication network, the computer network topology should adopt a stable and reliable structure as far as possible, with redundant backups, to ensure the high reliability of the entire network.
3. The network should be highly open, that is, the technology of devices and the access to other networks (such as INTERNET ).
4. Economical and practical: The model selection of equipment should have the best performance and price ratio, and implement as many functions as possible with the lowest investment.
5. Easy to operate and implement the project: based on the actual situation and characteristics of the Three Gorges University.

Network Structure Description

The core and nodes of the Three Gorges University campus network are connected by optical fiber cables and adopt Gigabit Ethernet technology to fully meet the application development requirements for backbone bandwidth and smoothly transition to 10-Gigabit Ethernet. Each branch node exchanges m to the desktop to provide sufficient desktop bandwidth for OA, file transmission, video applications, and other services.

The Three Gorges University campus network uses the network products provided by 3Com. 3Com participated in the research and development of international Gigabit Ethernet standards, and made the first product of Gigabit Ethernet technology. Its product line is long and easy to maintain and manage, and the network runs without faults on average for a long time. It also has comprehensive services and support.

The Three Gorges University campus network uses two 3Com Switch 4007 high-performance gigabit switches. The two are connected through two Gigabit Optical Fiber Links, which not only backs up each other, but also improves reliability, the Trunk technology can also be used to increase the bandwidth between two core switches. In addition to the Gigabit Ethernet module, the 3Com Switch 4007 plug in Fast Ethernet FX and TX mode. The FX mode provides fast connection with some node switches, TX mode provides a m switch to desktop connection. Make full use of the advantages of 3Com Switch 4007 mode vswitch.

The branch nodes of the campus network of the Three Gorges University mainly use SuperStack II 3900 and SuperStack II 3300 switches. The branch nodes of the district library, the West District Library, the Eastern District Library, the Central District e-education center, and the central humanities college use fiber links to the center.

Network Planning

In the switched network architecture, VLAN is an important component. It can be considered that VLAN is the soul of the campus network of the Three Gorges University. Through reasonable VLAN settings, users of the Three Gorges University campus network can easily move in the network without changing hardware lines. In this way, users and other network objects can be logically grouped, and corresponding security and access permissions can be set. Then, the computer automatically forms a virtual network working group according to the configuration, make full use of the advantages of the Exchange Network, reflecting the high speed, flexibility, and ease of management of the exchange network. Using VLAN has the following advantages: control broadcast storms on the network, increase network security, and centralize management and control.

3Com Switch 4007, SuperStack II 3900, and SuperStack II 3300 of 3Com support VLAN division across trunk networks. The communication between VLANs is completed quickly by 3Com Switch 4007 with layer-3 switching functions, without the need to add vrouters to increase costs.

Each of the Three Gorges University Campus Network's two 3Com switches 4007 is equipped with a module with the Third-layer switching function. Both modules are responsible for communications between VLANs in the Three Gorges University campus network, VRRP technology is used for mutual backup.

Network Management

Network Management aims:

1. Network Monitoring:
   Monitors the running status of the network, controls network routes and traffic, and analyzes Operation Records and alarm information.
2. Performance Control: Adjust the network performance according to the network application status, load status, and network utilization.
3. Fault Management:
   In order to ensure the high stability of the network system, the problem must be detected in time when a network problem occurs. It includes the operation status of all nodes, tracking and inspection of fault records, and testing of various communication protocols.
4. Efficiency Management:
   Efficiency Management is to evaluate the operation of the network system, count the use of network resources and the transmission volume of various communication protocols, and provide a basis for future network improvement or update planning.
5. Network security management:
   User identity confirmation, access control, maintenance and management of user permissions and user accounts, set the corresponding password and more .. Encryption and key management. Monitors and controls the behavior that undermines the security system on the Internet.
6. Run management:
   Develop technical standards, reliability, security solutions, and operating systems for network operation.

The Three Gorges University campus network uses 3Com Transcend Enterprise Manager for Solaris network management software to comprehensively manage the network. The 3Com Transcend Enterprise Manager for Solaris network management software provides analysis reports and charts on traffic, errors, broadcast, utilization, and other information through the graphic interface, the operation is simple and clear, providing convenient management means for the network.

Features

Reliability-The core device uses 3Com Switch 4007 and has high fault tolerance. Generally, no single point of failure occurs. In terms of the network structure, the dual-link, dual-core switching equipment, dual-route backup and other reliable and effective measures have been adopted, making the Three Gorges University Campus Network extremely high availability.

Scalability-The Ethernet Technology ensures the network scalability and can smoothly upgrade the network bandwidth. Using the 3Com Switch 4007 equal-mode Express Switch lays a good foundation for network device upgrade and network port expansion. Use standard protocols to connect different network devices. All of the above features excellent scalability.

Easy to operate and manage-The Ethernet technology is highly manageable. The configuration interfaces of 3Com Switch 4007, SuperStack II 3900, and SuperStack II 3300 are clear and clear, which greatly facilitates network installation, setup, and management. The 3Com Transcend Enterprise Manager for Solaris Network Management Software simplifies network management and maintenance using the graphical interface.

Topology of A Three Gorges Campus Network