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Questions tagged [tcp-window]

7 questions
34
votes
4 answers

Receiver limits TCP window size to 64,512

Facts (please identify any false statements): I have a 100 Mbps connection between two sites that are 80 ms apart This is a long fat connection that could benefit from a large TCP window size perhaps up to 100 Mbps * 0.08 sec = 1,000,000 bytes Both…
Chris Stankevitz
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7
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3 answers

TCP Window Scaling for Satellite Connections

A satellite connection generally has a RTT around 500ms. Connections generally suffer sub-optimal transfer speeds, in spite of large amounts of bandwidth because TCP acknowledgements take too long to arrive. My understanding is that a good way to…
directedition
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6
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3 answers

How to prevent TCP ZeroWindow on writing a large file to a Windows share?

I've been given access to a share on a Windows Server 2003 SP1 system (10.a.bbb.ccc) which is a file and printer server, and regularly large files get copied to that share. However, occasionally such a copy fails. When reproducing this issue using…
MarnixKlooster ReinstateMonica
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5
votes
1 answer

TCP Windows Size vs Socket Buffer Size on Windows

I am new to Windows networking. When people talk about TCP tuning on Windows platform, they always mention about TCP Window Size. I am wondering whether Windows uses the concept of "Socket Buffer Size"? On Windows XP, the TCP window size is fixed.…
userpal
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3
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1 answer

TCP Window size increases drastically and sender don't send until the receive buffer is not empty

I have a download stream over TCP in an application (running on Win2k12). The problem is that the connection gets closed by the sender because it times out. I used wireshark to see what happens on 2 different servers (on one server it works ok, on…
Andras Toth
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windows server 2012 tcp window not scaling

I've got 2 windows 2012 servers that limit connection speed to anywhere from 1-3mBps and it seems to be related to tcp window scaling. Both servers have these settings TCP Global Parameters ---------------------------------------------- …
user3930869
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1
vote
2 answers

Shrinking TCP Window Size to 0

Having an issue with any large file transfer that crosses our Cisco ASA unit come to an eventual pause. Setup Test1: Server A, FileZilla Client <- 1GBPS -> Cisco ASA <- 1 GBPS -> Server B, FileZilla Server TCP Window size on large transfers will…
Brent
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