Bug ID 755630: MRF SIP ALG: Mirrored media flows timeout on standby after 2 minutes

Last Modified: Dec 14, 2020

Bug Tracker

Affected Product:  See more info
BIG-IP TMOS(all modules)

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, 12.1.2, 12.1.2 HF1, 12.1.2 HF2, 12.1.3,,,,,,,, 12.1.4,, 12.1.5,,, 13.0.0, 13.0.0 HF1, 13.0.0 HF2, 13.0.0 HF3, 13.0.1, 13.1.0,,,,,,,,, 13.1.1,,,,, 13.1.3,,,,,, 14.0.0,,,,,, 14.0.1, 14.1.0,,,,

Fixed In:

Opened: Jan 16, 2019
Severity: 3-Major


The media flows get terminated after the UDP idle timeout expires on a Standby device.


SIP calls fail to deliver media when high availability (HA) failover occurs.


-- High availability (HA) configuration. -- SIP media calls on a SIP-ALG with SNAT feature enabled.


Partial mitigation is to set the UDP idle timeout to a higher value.

Fix Information

Properly set SIP ALG media pinhole connection flags so that to not time out due to inactivity on the next active device.

Behavior Change