Flying Fish Star Router TCP/IP optimization acceleration

Any network has a certain amount of bandwidth, if the bandwidth is full, then we can not get a faster experience, when many people will choose to add a new line, or increase the original bandwidth, in fact, can be solved by TCP/IP optimization acceleration To solve this problem, this article to the Flying Fish Star Router for example analysis.

One way to address this problem is to optimize existing technical programmes. Many network traffic is still based on TCP/IP. TCP provides reliable and orderly packet transport, which is used by most Web applications, e-mail, and file transfers. However, the TCP Flow Management algorithm is not advanced: if the network or receiver can not handle the transmission speed, its performance is lost packet, timeout or disorderly packet too many problems, then the network stream transmission speed will be reduced by half. Later, the speed will rise slowly, but still significantly slower than before.

Second, on the WAN, the performance of TCP applications, such as large file transfers, that require long time data transmission can be severely affected: the longer the transmission takes on these links, the less likely the sender will perceive a performance drop, and then it will take longer to respond to the drop in speed. TCP optimization can alleviate these problems by avoiding packet loss or disorderly transmission, or by directly modifying TCP flow and adjusting speed fluctuation behavior.

Third, do not want to increase bandwidth, but to pay attention to congestion problems. The problem does not have to be how much data needs to go from point A to point B, but how quickly all independent senders and receivers can complete the data transfer. Fast speed/fast spin down/slow up/speed down can speed up the application of the non-congested network, but it will increase the probability of congestion when the new sender joins the transmission.

For some of the optimizer to slow down the initial rate of increase or decrease the initial spin down by changing the behavior of the speed rise, they can prevent the first congestion and can better handle the threat by slowing down the transmission speed as the new flow begins to improve the transmission speed.

Iv. pay attention to network priority. The flow shaping optimizer is designed to ensure that the Organization is able to control the bandwidth consumed. Control can be positive, that is, to ensure that certain applications, devices, or users gain a certain amount of bandwidth, or that they can be negative, limiting the bandwidth used by a particular user, device, or application. Using them to optimize TCP traffic requires a clear system of the type of traffic and which applications and users have priority in obtaining network resources when congestion occurs.

V. To put aside TCP, more and more important traffic (video conferencing, VoIP) does not use TCP/IP; instead, it uses UDP/IP (user Datagram Protocol over IP). However, UDP does not have the same flow control mechanism as TCP, so TCP may be more suitable for robust optimization.

The UDP sender is only responsible for sending the packet, and the receiving end receives the data. Considering that the enterprise usually sets a higher priority for real-time session traffic based on UDP, the TCP optimizer can isolate TCP traffic from UDP streams and limit TCP traffic to a small number of channels, allowing UDP traffic to be passed first, thus alleviating this problem. (Of course, the optimizer running at the IP layer has more functionality).

TCP/IP is the provision of communication between applications. Its features include:

One, formatted information flow;

Second, provide reliable transmission.

To achieve the latter, the Transport Layer protocol requires the receiving end to send back confirmation, and if the packet loss, must resend, that is, the familiar "three handshake" process, so as to provide reliable data transmission, understand this we can optimize the router.