Questions tagged [tcp-window]
8 questions
35
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
- 351
7
votes
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
- 309
6
votes
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…
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
- 623
3
votes
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
- 131
1
vote
0 answers
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
- 21
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
- 143
0
votes
1 answer
What factors determine the TCP window size?
We have a network throughput issue, but cannot find a bottleneck. We have spent four weeks looking at router logs, FW logs, and monitoring and we are now looking into the TCP window size on client.
What I already know from research and do not…
Mucker
- 375