Bug ID 608635: SIP ALG not compatible with LSN PBA mode

Last Modified: Jul 12, 2023

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

Fixed In:
13.1.0

Opened: Aug 02, 2016

Severity: 3-Major

Symptoms

SIP Registrations cease to have incoming traffic delivered after a LSN PBA Block expires.

Impact

SIP Registrations created with the associated LSN pool will not have inbound traffic after the PBA block expires.

Conditions

1. SIP ALG is configured with a LSN pool in PBA mode with a block timeout configured 2. SIP registration requested with a longer expiry than then the remaining PBA lifetime 3. PBA block lifetime expires.

Workaround

Do not configure the LSN pool being used with SIP ALG into PBA mode with a block timeout; control SIP client behavior with SIP ALG profiles instead of PBA

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips