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9.3 Windows Vista/7
Read more at Performance Enhancements in the Next Generation TCP/IP Stack.
Vista is not optimised by default. The commands to enable the next generation IP stack features are: netsh interface tcp set global ecncapability=enabled netsh interface tcp set global congestionprovider=ctcp Please add this important info. to your Vista FAQ!
Please read http://en.wikipedia.org/wiki/Windows_Vista_networking_technologies
DrTCP does indeed work. As previously stated it will allow you to select from all your different network interface devices. I do not reccomend changing the MTU.
Bunk! Routers that don't know about ECN can still drop packets normally, but there is some ECN-hostile network equipment on the Internet. For this reason, ECN is disabled. Compound TCP is a modified TCP congestion avoidance algorithm, meant to improve networking performance in all applications. It is not enabled by default in the pre-Service Pack 1 version of Windows Vista, but enabled in SP1 and Windows Server 2008. It uses a different algorithm to modify the congestion window - borrowing from TCP Vegas and TCP New Reno. For every acknowledgement received, it increases the congestion window more aggressively, thus reaching the peak throughput much faster, increasing overall throughput. Install SP1 for Vista.
I beg to differ about drtcp not supported with vista,I tried the app.and changed the tcp recieve window values to various settings and each one had an effect! I used suggested tweak settings from dslreports.com after providing my info. needed to see if my settings were adjustable even after reading that vista tcp stack settings were optimized at default values,(255500 being default)and setting the value to 65535.So I would suggest ONLY tweaking tcp receive window settings.(I might need to add that I had a choice between ethernet and wifi card sett. on a laptop,I was using the ethernet for an isdn provider.) from: firstname.lastname@example.org
Then type/copy & paste the following command:
netsh interface ipv4 set subinterface "Local Area Connection" mtu=xxxx store=persistent
Where xxxx = the MTU that you want. Rebooting isn't required. "Local Area Connection" is a common name for the interface if you use a NIC for connectivity. A wireless NIC may be called "Wireless Network Connection". If unsure, the network status icon by the clock will tell you.
If you have a router, ensure that the MTU is set to the MTU chosen here (refer to your router's manual).
get message that .dll helper cannot be loaded is there a fix for this.
When I try to do this my vista says "the operation requires elevation"? :O
The following .dll helper cannot be loaded iA109a-k13-3zxd-bape-TE Is there a fix for this.
I mistakenly entered "Local Area Connection" and got device not found. I then tried "Wireless Network Connection" and got an ok. Thanks-
I have ran this comand and the result was a message "elevation is required". I was in admin login. What can i do?
If you get element not found your not specifying the right subinterface (i.e. network connection). If you are using a wireless connection, use netsh interface ipv4 set subinterface "Wireless Network Connection" mtu=xxxx store=persistent
It worked fine for me, but maybe because I didn't know what I was supposed to do. I went into the Control Panel, opened Administrative Tools, opened System Configuration, Tools, Command Prompt & entered the informtion as instructed, then did it again changing the xxxx to 1500 so it actually worked.
Hello. I have a question. I entered the command exactly as it is listed above and got an Ok back but the MTU did not change. Am I supposed to put the "" around Local Area Network in this command? Thanks for your help!
all i get when i type this in is "element not found"
if you receive "element not found" / try running the following from an elevated cmd window less quotes: "netsh interface ipv4 show subinterfaces" look to the lower right of those results under "Interface" and be sure that you are typing the exactly as shown with quotes. For instance, my Interface had actually been re-named "Local Area Connection 2" because I had previously uninstalled my network card. Worked fine after adding the 2. Good Luck
Thank you, worked fine and big help. This solved an issue with a Win7 box and slow CIFS shares to a ReadyNAS (dropping MTU frmo 1500 to 1470 in this case)