MTU Value configuration method of youxun Router

We know that MTU is the abbreviation of Maximum Transmission Unit, which indicates the Maximum data packet transmitted over the network. The Unit of MTU is byte. If some websites cannot be accessed normally, it is difficult to connect, even if the connection is slow, MTU needs to be modified in this case.

1. Check the MTU value of the telecom service provider device in the Start Menu → program → attachment → command prompt and enter the ping-f-l 14xx www.google.cn (1)-l 14xx parameter: Send a fixed-length data packet, 14xx indicates the package size to be tested. In the formula above,-l indicates the lower case of L (not 1 ). (2) *-f parameter: the router cannot change the data packet size without authorization. (3) * www.google.cn: Any host on the Internet can also use other host names or IP addresses. 2. Observe the feedback results and determine whether Packet needs to be fragmented but DF set appears in the MTU value (1) of the telecom service provider device. -www.2cto.com-indicates that data packets need to be split and sent to reduce the packet length, and then run the ping command above. Try multiple times from 1400 to 1472 to find the appropriate packet length. Add the packet length to the packet header 28 bytes to get the MTU value. (2) ping indicates that data packets do not need to be split and can be sent out through the gateway. 3. By modifying the mtu value in the youxun vro, you can successfully solve problems such as failure to send attachments via Email, failure to log on via MSN, failure to open web pages via QQ, failure to open some websites or links, etc. MTU of most network devices is 1500. If the MTU of the youxun router is larger than the MTU of the gateway, large data packets will be split and transmitted, which will generate a lot of data packet fragments and increase packet loss rate, reduce the network speed, and set the MTU of the router to be smaller or the same as the MTU of the device of the telecom service provider to reduce packet loss. This article is from