Forum Discussion
John_Heyer_1508
Cirrostratus
Dec 13, 2014How do I enable the TCP Window Scaling option?
I've been doing some performance tests uploading and download large files over SSL with an F5 LTM in the middle. The virtual server setup is standard, using the default tcp profile.
In most per...
- Dec 13, 2014
what version are you running? have you tried to increase send/receive buffer e.g. 65536 bytes?
Note: Beginning in 11.4.0, the window scale functionality is built into the TCP profile and cannot be manually disabled or enabled; it will be negotiated if the send or receive buffer is larger than 65535 bytes.
sol7559: Overview of the TCP profile
https://support.f5.com/kb/en-us/solutions/public/7000/500/sol7559.html
- saidshow_251381Jul 18, 2016
Cirrostratus
SOLVED: Once I added a floating IP all was sorted. I read many similar posts on Dev Central and all mentioned SNAT Automap. This required a floating IP. I setup the floating IP prior to trying the automap SNAT and it worked. For everyone that suggested the Automap SNAT on other posts - You have helped me so much. Thank you!