Instance analysis practical application of distributed layer-3 Switch

The distributed layer-3 switch is still quite common. So I studied and analyzed the practical application of the distributed layer-3 Switch. Here I will share it with you and hope it will be useful to you. With the in-depth development of modern teaching activities and the increasingly frequent exchanges between teaching institutions at home and abroad, the demands for schools to carry out various complex information exchanges over the Internet are growing, the campus network that is simply connected to the peer network can no longer meet the application requirements of schools. Smart networks have become the development direction of campus networks. Therefore, in order to keep up with the rapid development of educational informatization, the smart campus network has become an inevitable choice for modern educational institutions.

◆ A smart campus network should have the following features:

1. fast network connection

The core of the campus network is the network for teachers and students inside the campus. Therefore, the campus LAN is the focus of the system construction. Due to the large number of teachers and students involved in network applications, the information contains a large amount of multimedia information, high-speed network connections are essential for building campus networks.

2. diversified information structures

The campus network should meet different application needs, including multimedia application Internet access, multimedia teaching, E-library, video on demand, school website, internal E-mail, etc.) and Information Management score statistics, file Management) and remote communication, external dial-in, remote interconnection, etc. Due to the complex data composition, different types of data have different quality requirements for network transmission.

3. good scalability

For schools, changing network equipment is a huge expense. The first factor to consider when setting up a campus network is the sustainable expansion in the next five years, the use of distributed layer-3 switches conforms to the requirements of the current school network and the improvement and upgrade of the overall network in the future.

4. Secure and reliable

The campus network contains a large amount of important data about teaching and archive management, which can be damaged, lost, or stolen. In terms of security, the school uses the firewall function to divide the campus network into two parts, so as to avoid violations of core servers on the Intranet. Considering the large number of network devices, the structure is more complex, the same vendor's network management can perform more detailed management of devices, enhancing the reliability of network applications.

5. Easy to operate and manage

The campus network is intended for teachers, students and office staff of different levels of knowledge. The application and management should be simple and easy. The network management software should be fully Chinese, with friendly interfaces and ease of use. It should not be too professional.

6. High Cost Effectiveness

The school has limited investment in network construction. Therefore, it is required that the built network should be economical and practical. To purchase switch equipment, we should first consider the manufacturers with high product cost effectiveness and strong after-sales service; at the same time, tailored according to the actual needs of the network.

◆ Construct a smart campus network with a three-tier structure

1. The backbone uses a three-tier architecture, making full use of the high-performance management of three-tier exchange, meeting the needs of large-capacity, high-speed data transmission.

2. layer-3 management makes it easy to process various network information data.

3. The distributed layer-3 system provides powerful system tension, which prevents the entire system from getting started.

4. layer-3 switching technology for network route management. It not only effectively controls network storms, but also achieves cross-VLAN network connections, providing a powerful guarantee for network security.

5. The distributed three-layer structure makes management intelligent and improves management efficiency.

◆ Advantages of distributed three-tier architecture

1. Differences from common networks

Distributed L3 networks provide intelligent network management based on L2 switching technology and routing options for L3 protocols to meet the needs of various advanced network applications.

2. Comparison with L2 Switching

The distributed L3 switch supports popular routing protocols and organically combines the advantages of L2 switches with vrouters. l3 switches can control IP addresses, making it easier to build large-scale local area networks.

3. Differences from centralized layer-3 core exchange

Distributed layer-3, which can be managed to each grass-roots network, greatly reducing the backbone burden. The network management capability is balanced, replacing the core network architecture with stacked, large capacity, high backboard bandwidth, and expensive centralized management. When the same or more advanced functions are completed, the overall cost of the device is lower.

Smart Campus Network Construction Instance

1. Network Architecture

① Network core: consists of omnidirectional intelligent distributed layer-3 Switch QS-8324 and QS-8308 Gigabit cascade. Provides 8 Gigabit and 24 10-Gigabit outputs to connect to various servers and branches.

② Branch trunk: uses an omnidirectional intelligent distributed layer-3 Switch QS-8324, and establishes a distributed layer-3 switching network with the core, which reduces the burden on the core switch and enhances the processing capability of the Network Branch.

③ Network support: adopts omnidirectional Intelligent Network Management Switch QS-8226I, and works with Omnidirectional intelligent distributed three-layer switch QS-8324 to realize the whole network intelligent remote network management and monitoring.

2. Network Description

① Distributed layer-3 switches are used to manage networks. VLAN division effectively blocks broadcast storms and ensures normal access between different subnets.

② Distributed layer-3 switch supports popular routing protocols to achieve cross-network access between switches.

③ Network security control: the distributed layer-3 switch can not only analyze MAC addresses, but also monitor and analyze IP packets to improve network security.

④ Distributed layer-3 switching makes the network fully intelligent from the trunk to the trunk, not only the traditional campus network service can be applied freely, but also supports IGMP, DVMRP, SNMP, multiple data packet monitoring and other advanced applications, in particular, it can provide video conferencing, video interaction teaching, video on demand, and other video network services.

Overview

The distributed three-tier network maximizes the subnet dispersion and student user clutter, and solves major difficulties in campus network management. Is an advanced and novel network architecture. In distributed three-layer network application, as the backbone of distributed three-layer switch QS-8308 and QS-8324, its outstanding characteristics in route management, full culture and configuration function, omnidirectional all Chinese network management software example 2; second-level switch QS-8226I with its perfect network management, effectively assist the trunk switch to the management and monitoring of the campus branch network, to meet the support of a large number of data exchange, eliminate the network bottleneck, suppression of broadcast storms. The reasonable selection and exchange of Product Design bandwidth in the LAN reflects the principle of superior performance and economic and practical use. Based on the implementation of required functions, the integrated firewall is also used to ensure the security and reliability of the network, and provide corresponding solutions and stable operation for different users.

In addition to outstanding performance, the overall cost of an omnidirectional distributed three-tier solution is lower than that of other solutions, with less than 1 million RMB in cost, the solution provided by omnidirectional companies provides support for about 1500 nodes and builds an intelligent network that can complete various advanced applications, it provides a perfect solution for realizing educational informatization.