ADSL Registration Table Simple Optimization Method _ Registry

When we use a product, we always want to make the most of the 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!

When the Windows family is installed, the default is for Ethernet settings, and in the process of TCP/IP packet transfer, some of the hard work is done in subcontracting and grouping to accommodate 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 the Registration form

MAXMTU is the largest TCP/IP transmission unit, in the TCP/IP protocol, the data to be transmitted will be divided into smaller couch  write  Qinglie  to carry Horseshoe Palmetto 笮 the thumb ∥?76 bytes. The Windows default byte is 1500, which is the grouping standard for Ethernet. ADSL use of PPPoE slightly less than this value, depending on the ISP and a small difference, the use of default values will reduce transmission efficiency, MAXMTU in the registry location:

Hkey_local_machine\system\currentcontrolset\services\class\nettrans\00yy,

Key Name: MAXMTU

Where YY is the portal of TCP/IP, varies with settings, typically between 00 and 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.knowsky.com-f-L 1500 sends data to www.knowsky.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 the modem, preferably the 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_MACHINE\System\CurrentControlSet\Services\VxD\MSTCP

Key Name: Defaultrcvwindow

DefaultTTL is the lifetime of the TCP/IP grouping, which is discarded if the packet is transmitted over the Internet over the life of the group. Changing the DefaultTTL to a greater extent helps the information spread farther across the internet. DefaultTTL location in the registry:

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\VxD\MSTCP,

Key Name: DefaultTTL