Last Modified: Jul 18, 2026
Affected Product(s):
BIG-IP LTM
Known Affected Versions:
12.1.0, 12.1.0 hf1, 12.1.0 hf2, 12.1.1, 12.1.1 hf1, 12.1.1 hf2
Fixed In:
13.0.0, 12.1.2
Opened: Feb 19, 2016 Severity: 2-Critical
When connection rate limit is set on a fastL4 virtual server, client connections hang with high probability.
Client connections hang with high probability.
Set Connection Rate Limit on a fastL4 virtual server.
Do rate limiting using iRules. https://devcentral.f5.com/articles/iruleology-table-based-rate-limiting
Fixed Connection Rate Limiting on a fastL4 virtual server.