Free bandwidth limits in Windows7 system

For the concept of bandwidth, a comparison of the image of an analogy is the freeway. The amount of data that can be transmitted on the line in a unit of time, the common unit is bps (bit per second).

So, how do you modify its values?

1, point "start"--point "run"--enter "gpedit.msc" (note, the input is not "", the transmission gpedit.msc), and then click "OK" (or enter), will open the system of "Group Policy"

2, we began to adjust Group Policy: In the left column of Group Policy, turn on "Computer Configuration"--"Administrative Templates"--"Network"-"QoS Packet Scheduler." At this point there will be a "limit to retain bandwidth", double-click on the right side of the window, click the "limit to retain bandwidth", in the " Limit the reserved Bandwidth Properties window select Enabled, and then set the value in bandwidth throttling to 0, and click OK to do so.

The second method is more dangerous to change the registry to not familiar with the registration of the player or do not try good if the wrong is dangerous!!

Run "regedit" to open the Registry manager, and then follow the path to find Hkey_local_machinesystemcurrentcontrolsetservicestcpipparameters.

Right-click the space corresponding to the right of the "Parameters" subkey, select "New" → "DWORD value", name it "DefaultTTL", and then right-click the mouse to select "Modify" and modify its value to "80" (hexadecimal) or 128 (decimal) in the pop-up window.

In turn, create the following "DWORD value" and modify its value (if there are two values, the former is 16, the latter is decimal):

"EnablePMTUBHDetect" = "0"

"EnablePMTUDiscovery" = "1"

"Globalmaxtcpwindowsize" = "7FFF" or "32767"

"Tcpmaxdupacks" = "2"

"SackOpts" = "1"

"Tcp1323Opts" = "1"

"TcpWindowSize" = "7FFF" or "32767" (93440 or 186880 or 372300, depending on the circumstances of the network)