Registry simple optimization method to greatly improve ADSL efficiency _ registration Form

   we always want to make the most of our products when we use a product. We broadband internet is also the same mentality, how to make ADSL the fastest, the best effect? Under the existing hardware conditions we can only optimize!     Windows Series when installed, the default is for Ethernet settings, in the TCP/IP packet transfer process will be some of the work in the subcontracting and combination to adapt to the ISP. Although ADSL use PPPoE protocol, with the characteristics of the LAN, but not exactly equal to the LAN protocol, so there is room for optimization, we can modify the registry parameters, so that the system for ADSL optimization. Specific parameters such as MAXMTU, Defaultrcvwin, etc., this optimization can enable ADSL to adapt to ISP network parameters, maximize ADSL efficiency.   Open Registry   Registry     MAXMTU is the largest TCP/IP transmission unit, in the TCP/IP protocol, the data to be transmitted into smaller groups for transmission, each group size of 576 bytes. The Windows default byte is 1500, which is the grouping standard for Ethernet. ADSL use of PPPoE slightly less than this number, depending on the ISP and a small difference, using the default value will reduce transmission efficiency, MAXMTU in the registry location: Hkey_local_ Machinesystemcurrentcontrolsetservicesclassnettrans0yy, Key name: Maxmtu     where yy is the entry of TCP/IP, different settings vary, Generally between 00 to 30. How to determine the MTU value of an ISP and match it for optimization purposes is simple enough to use the ping command to get the value. Ping www.arongsoft.com-f-L 1500 sends data to www.arongsoft.com (preferably your ISP's web site) according to the 1500 group (-L 1500), and checks to see if data fragments from different groupings are found (-f) If there is a decrease in the grouping value, the matching MAXMTU can eventually be found. This value is the most critical part of ADSL optimization.     Defaultrcvwindow is the size of the default transport unit buffer. The buffer is too small to cause packet blocking and reduce transmission efficiency. The buffer is too large, and if a group error causes all partitions in the buffer to be discarded and sent back, it can also reduce efficiency. The size of the value is related to the speed of modem, the mostGood is MSS (Maximum Segment Size, the maximum number of groupings, equal to Mxamtu minus 40 bytes of address information), Defaultrcvwindow the location in the registry: Hkey_local_ MACHINESYSTEMCURRENTCONTROLSETSERVICESVXDMSTCP Key Name: Defaultrcvwindow     DefaultTTL is the life of TCP/IP packets, If the packet is transmitted over the Internet over the life of the group, the grouping is discarded. Changing the DefaultTTL to a greater extent helps the information spread farther across the internet. DefaultTTL in registry: HKEY_LOCAL_MACHINESYSTEMCURRENTCONTROLSETSERVICESVXDMSTCP, Key name: DefaultTTL     The above describes the main needs of the optimization of the parameters, and some other parameters due to the limited data are not introduced.