Network Switch hardware upgrade guide (1)

When the main performance of a LAN cannot meet the new application requirements of an enterprise, you must consider upgrading the network.
During the upgrade, you should analyze the problems to be solved based on the requirements of network applications, especially the upgrade of switch hardware devices. This article will discuss this issue with you.

1. Upgrade network devices

1. Principles for selecting upgraded network devices

When selecting a network device for a network upgrade, follow these principles:

Reliability

Because the upgrade is often the core and backbone network, its importance is self-evident, and once paralyzed, it will have a huge impact. Therefore, reliability must be put first. Both brand selection and Device Configuration take reliability as the first consideration.

Performance

As a backbone network node, the central switch, aggregation switch, and plant switch must be able to provide fully non-blocking multi-layer switching performance to ensure smooth business.

Manageability

The manageable level of a large network directly affects the operation cost and service quality. Therefore, all nodes should be manageable and a powerful and concise network management system is required, it can comprehensively monitor and manage network traffic and operation status.

Flexibility and scalability

Due to the complex structure of the enterprise network, the switch must be able to connect to a full range of interfaces, such as optical ports and electrical ports, Mbit/s, Gbit/s and 10 Gbit/s ports, multi-mode optical fiber interfaces, and long-distance Single-Mode Optical Fiber interfaces. The switching structure should also be able to flexibly expand the capacity according to the network expansion. Its software should have independent intellectual property rights, and its subsequent R & D and upgrade should be ensured to ensure support for future new businesses.

Security

With the popularization and development of networks, various attacks are also threatening network security. Not only access switches, but also vswitches at the backbone layer should take into account security issues, such as Access Control and bandwidth control, so as to effectively control the infringement of poor services on the entire backbone network.

QoS control capability

With the increasing number of multimedia business flows, such as voice and video on the network, we have put forward higher requirements for core switching nodes, not only can we achieve normal line rate switching, they must also be able to effectively control their priorities and bandwidth based on the characteristics of different business flows, so as to ensure the smoothness of important business and time-sensitive business.

Standard and openness

Because the network is often an environment with multiple manufacturers' devices, the selected devices must be able to support common open standards and protocols in the industry, so that they can communicate effectively with other manufacturers' devices.

Cost effectiveness

On the basis of meeting network requirements and network applications, the cost-effectiveness of equipment should be fully considered to achieve the maximum ROI.

2. Upgrade the switch

Vswitches in an enterprise network are divided into three layers: Core-layer switches, aggregation-layer backbone switches, and access-layer workgroup switches ). As the hub of the entire network, almost 80% of network transmission is completed by the core switch. Therefore, the performance of the core switch determines the performance of the entire network. Therefore, when upgrading the network, you should first consider upgrading the core switch.