Last Modified: Jul 12, 2023
Known Affected Versions:
16.0.0, 126.96.36.199, 16.0.1, 188.8.131.52, 184.108.40.206, 16.1.0, 16.1.1, 16.1.2, 220.127.116.11
Opened: May 21, 2021 Severity: 3-Major
Serverside connections from pool member to BIG-IP hang, with the BIG-IP advertising a TCP zero window.
Serverside connections hang in the middle of data transfer, and will eventually time out.
-- Virtual server with OneConnect profile -- The BIG-IP applies flow-control to the serverside connection (e.g. the server's response to the BIG-IP is faster than the BIG-IP's forwarding the response to the client) -- The serverside connection is subsequently re-used
If possible, remove the OneConnect profile from the virtual server. Note: removing a OneConnect profile may cause problems with persistence, as described in K7964: The BIG-IP system may appear to ignore persistence information for Keep-Alive connections (https://support.f5.com/csp/article/K7964)