Bug ID 1104517: In SWG explicit proxy, some TCP connections are reset because of inconsistency between sessionDB and local IP2SessionId map

Last Modified: Apr 24, 2024

Affected Product(s):
BIG-IP SWG(all modules)

Known Affected Versions:
15.1.5,, 15.1.6,, 15.1.7, 15.1.8,,, 15.1.9,, 16.1.4,,,,,

Fixed In:
17.1.1, 15.1.10

Opened: May 05, 2022

Severity: 2-Critical


Some clients' TCP connections are reset with an error "cl sm driver error (Illegal value)" when the BIG-IP system is in this error state.


Some clients are unable to access a service.


SWG explicit proxy is configured.


Disable sessionDB mirroring on both active and standby # tmsh modify sys db statemirror.mirrorsessions value disable # tmsh save sys config Restart tmm on standby # bigstart restart tmm

Fix Information

Fixed an issue causing a TCP reset with certain clients.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips