How to manage LAN bandwidth

With the rapid development of basic network technologies and network applications and the improvement of users' requirements on network performance, network management becomes an urgent problem to be solved. Traffic management in network management problems is even more urgent. Network egress bandwidth is upgraded every year, but it still cannot meet the increasing needs of users. Many enterprise users and operators have long been faced with the troubles of bandwidth: applying for sufficient bandwidth to invest too much, bandwidth is insufficient. There are many causes of user bandwidth congestion, and the export bandwidth is always lower than the desktop bandwidth is the most fundamental cause. The rapid development of network applications is the main cause of insufficient bandwidth, in particular, P2P software and network viruses that have emerged in recent years have greatly consumed limited network resources.

This article will briefly introduce several tips for bandwidth management:

1. Ensure that the network is smooth. The key is to prohibit P2P and video.

The current situation of the enterprise network is: File Download, Web browsing, mail sending and receiving, and video communication all adopt the same bandwidth processing strategy, for key business of the enterprise such as OA, MIS, ERP, common applications such as CRM and network (such as P2P applications and network TVs) compete for bandwidth, and 80% of network bandwidth is occupied by common applications. To solve the network congestion problem, we must first prohibit downloading P2P software and online videos.

2. Exercise caution when selecting a traffic distribution tool.

(1) The key to solving network congestion is how to reasonably allocate bandwidth to each desktop user, some people prefer to assign a specified bandwidth to an IP address, but this is not an effective way to use the bandwidth. When network resources are insufficient, users with large usage should be restricted to ensure that users with small usage. Otherwise, when network resources are idle, these restrictions should be removed.

(2) Try not to use ARP spoofing to restrict traffic. ARP spoofing can easily cause unstable LAN networks.

3. The arpfirewall must be installed.

ARP virus has become a major killer of LAN bandwidth, leading to unstable networks, network paralysis, and leakage of user privacy, attackers may exploit this vulnerability to steal user names and passwords. Therefore, before managing bandwidth, you must install the arpfirewall.

4. Use an effective traffic monitoring tool.

If you know yourself and know what you want to do, you can choose an effective traffic monitoring tool to make sure that you are the most user-used and which service you use most transparent network usage. It is a prerequisite for effective management to monitor which user occupies a large amount of bandwidth and which process occupies the bandwidth so that the administrator can see at a glance. For example, the super sniffing dog can monitor the bandwidth occupied by each user in real time and automatically identify the network connection type. When the maximum bandwidth limit is exceeded, the network connection that occupies the bandwidth is automatically disconnected, this ensures smooth network connection.

5. Administrative means are indispensable.

To achieve effective network management, you must first obtain the support from the management and establish an Internet access management system. The two-pronged approach enables effective bandwidth management.