Deep Learning of VLAN networks becomes a major player

Learn how to use VLAN networks to become a major contributor. After establishing and configuring enterprise VLAN networks, managing VLAN networks, and maintaining VLAN networks, you will have an in-depth understanding of VLANs.

VLAN is a virtual network. VLAN is divided into three methods: Port-based, MAC address and IP address-based. In practical applications, the role of a virtual network is similar to that of different working groups. That is to say, virtual networks cannot communicate directly, but must be forwarded through routers, this improves the security performance of the entire network to a certain extent and also improves the network transmission efficiency.

During the establishment of enterprise networks, many users have some misunderstandings about VLANs, therefore, this article will discuss with you about the systematic configuration, management, and maintenance of such network structures, hoping to help users who need them.

1. Set up and configure an enterprise VLAN Network

First, we need to understand that data communication between different VLANs cannot be realized without routing. At present, there are routers with routing functions on the market, and layer-3 switches with routing functions. Among them, layer-3 switches are suitable for dividing large and medium-sized VLAN networks, and routers are suitable for dividing small VLAN networks. Therefore, vro is the most practical solution for establishing a VLAN network in a general enterprise network environment.

In general, the establishment of VLAN networks is actually relatively simple, because the implementation of VLAN networks mainly relies on software configuration, and hardware serves as a supporting platform. In terms of hardware, it mainly serves as a combination of routers and switches. For example, when selecting a vro, pay attention to how many computers can be taken. In addition, set the port connecting the vro to the vswitch on the second layer of the network as the aggregation port, the aggregation link between the vro and vswitch can be connected.

In the software configuration process, the VLAN configuration process is actually very simple. You only need to take two steps: name each VLAN group, and then map the corresponding VLAN to the corresponding switch port. The actual configuration process is usually performed in the vswitch. The specific configuration process varies depending on the device, so you can refer to the configuration instructions of Layer 2 or Layer 3 vswitches for details, generally, the corresponding configuration is introduced.

Ii. VLAN Network Management

The VLAN-based network division system allows administrators to manage enterprise networks more conveniently. the flexible expansion of VLAN networks also allows enterprises to expand their networks without network confusion. Therefore, it is also important to manage a VLAN network after it is created.

Note that VLAN networks must be configured on the switch machine. Therefore, the management of the entire VLAN network requires a stable and powerful switch; on the other hand, it also requires the maintenance of enterprise network administrators, such as reasonable allocation of network resources, balanced network load, effective reduction of online broadcast information, and convenient group management for users.

In addition, when selecting a VLAN switch, you should also pay attention to whether it has the monitoring function. Generally, many switches can now configure a monitoring port to connect to the protocol analyzer or other monitors. In this type of switch, you can configure the monitoring port to check the traffic between any two ports. In a few basebased switches, the monitoring port can be used to capture all the traffic transmitted by the switch. Therefore, hardware selection is also very important for the later Management of VLANs.

3. VLAN network maintenance

VLAN networks are easy to construct and easy to implement. However, during actual network operation, you cannot ignore the maintenance work. Because a VLAN is a virtual division based on an existing network, any change to hardware and software related to the network configuration may result in the running status of the VLAN.

Therefore, you should always pay attention to the instant backup of network configuration parameters. At the same time, you should check the working status of routers and switches in the network from time to detect network hardware problems in a timely manner, in this way, further delay of faults is eliminated.

Tip: The biggest challenge after a network uses a VLAN is to maintain the configurations of VLANs that are worn by multiple switches. There is no centralized way to configure and maintain VLAN information. The network administrator must perform independent VLAN configuration and maintenance for each switch.

Iv. Summary

In general, VLAN division by router is a cost-effective method in small and medium-sized enterprises. However, in large and medium-sized enterprises, VLAN division by vro seriously affects the performance of the enterprise network, and inter-VLAN communication must be achieved through routing. Therefore, l3 switches with routing functions are widely used in VLAN networks of large and medium-sized enterprises.

The VLAN network is very flexible, mainly because it can adopt static VLAN mode or dynamic VLAN mode. However, the most widely used dynamic VLAN mode is currently, dynamic VLAN methods can be divided into multiple types, allowing users to flexibly match according to their own network conditions. During the specific management and maintenance of VLAN networks, we should pay attention to the irregular monitoring of network devices and prevent system data and network configuration redundancy, it will be the basis for ensuring the stable operation of VLAN networks.