How to optimize your network

How to maximize the speed and performance of the network has always been a concern of enterprise network managers. This article will focus on how to further improve the speed and performance of the network, give the industry senior personage and network expert seven suggestions.

Using Jumbo Packets

The use of mega-packet technology enables the network to gain performance gains, switches and network interface cards that support mega-packets can handle packets with a maximum length exceeding IEEE standard (1.5k bits), and some devices support packets that are longer than 9k bits, but there is no uniform standard for the length of mega packets. Industry insiders pointed out that for the gigabit network and 10G network such as high-speed Ethernet, the use of mega-packet technology is more effective, including 3Com, Cisco,extreme networks and many other manufacturers have provided support for this technology products. Networks using this technology will have to set the switch to Mega packet mode and must use the same vendor's products, otherwise there may be problems with packet loss or decomposition. At the same time, experts suggest that the scope of use of mega-packet technologies should be limited, such as using the technology only on network connections such as server file transfer or backup work to the server. (Computer science)

Check the network connection

The degradation of network performance may be due to simple physical connectivity problems, but network administrators cannot ignore these problems, because the damage to the cable or connector may only lead to the loss of the packet without completely disabling the network, so the problem is more insidious. You can use a network sniffer to detect abnormal packet retransmissions, which is often a symptom of a cable problem. Environmental factors may also result in a decline in network performance, such as cables near elevators or heating systems that are affected by electromagnetic fields when transmitting data. Experts advise installing a protective enclosure on a cable in such an environment, and preferably upgrading all cables in the network to line 5 or 6.

Use full duplex mode

Network connections at both ends of the NIC are in Full-duplex mode the highest performance, and the PC network card easily through the software by the user inadvertently or deliberately set to Half-duplex mode. Monitoring the connection speed is important for locating the duplex settings of two ports. Experts recommend that you use a software called Multi-router Traffic Grapher to monitor the performance of your network connections to ensure Full-duplex settings are turned on both ends.
Use the Layer 3 exchange

One way to improve network performance is to implement a layer 3 exchange on a switch connected to a desktop machine. Many switches provide the IP routing capabilities of the LAN Edge Switch and QoS based on the Layer 3 exchange. With the Layer 3 Exchange capability, the switch will not send each packet to the router, such as two nodes located on the same switch on a different virtual LAN, and the Layer 3 edge switch can route the communication service between the two nodes.

Increase routing control

Implement routing control or routing optimization on sites with more than one Internet connection, a configuration known as multihomed hosts (multi-homing). The site's routing control devices are connected to the network as BGP (Border Gateway Protocol), and BGP is a routing mechanism to determine which Internet connection to use. This choice is based on which connection will use the least number of router hops to reach the destination. Routing control can choose the best route based on the combination of performance and price, which is better than BGP.

Using Data packet shaping

The packet shaper puts the network communication business into the queue in a different sense of importance, such as critical applications and deferred-sensitive applications, with higher priority. This can be achieved by limiting the bandwidth of some applications or blocking certain applications.

Using compression technology

Placing compression equipment on a site connected to both ends of the WAN to scan the communications business is based on the principle of replacing the duplicate pattern with a shorter pattern to reduce the number of bytes that need to be transmitted over the WAN, so that the limited bandwidth can be utilized more fully. In addition, using the SSL-layer accelerator, you can reduce the number of bytes transferred to the Web page by compressing technology and eliminate the data that is not needed to rebuild the Web page to speed up Internet SSL transmission, as well as reduce the number of TCP connection requests that the application server is processing.