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Windows 7: I have a question about a tcp registry key

10 Jul 2016   #1
smirk

Windows 10 Home 64bit
 
 
I have a question about a tcp registry key

I found this registry key Tcp1323Opts and i was just curious if theres a sequence while putting the value as 1(01) or if i could leave it as is?

[HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Tcpip\Parameters]


My System SpecsSystem Spec
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11 Jul 2016   #2
sml156

Microsoft Windows 7 Ultimate 32-bit 7601
 
 

I would leave it the way it is, I think it would make your internet connection either buggy or unusable if you changed it.

Source:
Tcp1323Opts


Quote:
Description
Determines whether TCP uses the timestamping and window scaling features described in RFC 1323, TCP Extensions for High Performance.

Window scaling permits TCP to negotiate a scaling factor for the TCP receive window size, allowing for a very large TCP receive window of up to 1 GB. The TCP receive window is the amount of data the sending host can send at one time on a connection.

Timestamps help TCP measure round trip time (RTT) accurately in order to adjust retransmission timeouts. The Timestamps option provides two timestamp fields of 4 bytes each in the TCP header, one to record the time the initial transmission is sent and one to record the time on the remote host.

This entry is a 2-bit bitmask. The lower bit determines whether scaling is enabled; the higher bit determines whether timestamps are enabled. To enable a feature, set the bit representing the feature to 1. To disable a feature, set its bit to 0.


Value Meaning
0 (00) Timestamps and window scaling are disabled.
1 (01) Window scaling is enabled.
2 (10) Timestamps are enabled.
3 (11) Timestamps and window scaling are enabled. default
My System SpecsSystem Spec
11 Jul 2016   #3
smirk

Windows 10 Home 64bit
 
 

Should i enable or disable any of the settings since i have tcp1323Opts set to 1?


Attached Thumbnails
I have a question about a tcp registry key-screenshot_2016-07-11-09-48-52.png  
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11 Jul 2016   #4
sml156

Microsoft Windows 7 Ultimate 32-bit 7601
 
 

Read my post
Quote:
3 (11) Timestamps and window scaling are enabled. default


If you don't understand what and why you are doing something you really should not be doing it.

If I were you I would steer clear of the registry.

Why not make yourself a Windows 7 virtual machine. After you build it you clone it and before starting it you compress it with 7zip or something similar and play with all registry settings to your hearts content and when something breaks just delete it and unzip the original. Or you could run it in non-persistant mode.
My System SpecsSystem Spec
11 Jul 2016   #5
sml156

Microsoft Windows 7 Ultimate 32-bit 7601
 
 

Here is the results of that same command on my machine.

I have a question about a tcp registry key-netish-int-tcp-show-global.png


My System SpecsSystem Spec
12 Jul 2016   #6
smirk

Windows 10 Home 64bit
 
 

I have a low end computer that i try all my computer stuff out on with backs ups of important files ,registry, full back up of my system, pc parts os disks if i have a problem because of tweaks to the registry, external hard drives etc i appreciate the looking out but i understand what im getting into like for instance years ive learned that killing certain processes you can fry your processor and not have a computer anymore ive learned that with certain registry tweaks you can make it to where a reinstall would be the best option or if you have the right software on a boot disk you can modify inside of the computer to where the system barely knows what to do when the power button is pressed. I have a good understanding of what can happen not just because of trial and error but from talking with certified techs, asking questions and just taking risks
My System SpecsSystem Spec
12 Jul 2016   #7
margrave

Size 12
 
 

Killing certain processes can fry your processor? Which processes?

Hmmm ... suppose in live in Arizona where the summer temps can reach 120 degrees. Suppose I killl the air-conditioner process? The room gets hot. The processor fries.

That must be it, right?
My System SpecsSystem Spec
13 Jul 2016   #8
Eric3742

Windows 7 x64
 
 

By having a low end computer to try, it do not mean anything.

Each computer, including hardware & software & program has its own unique features or setting.
As meaning that you cannot compare using just a low end to play around the setting.

I did this many many years ago, and i found out it is a waste of time, as no 2 computers are the same, although same model.

Just avoid playing the registry, as what sml156 said.

If you want to play around, then focus more on software & program, including update on any changes.
Also use your time here and there (forums) to understand more on whatever interest you.
You may even discovered hidden tips and info, just to add on to your knowledge.
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