Bug ID 941593: Video Traffic Management - ECN detection

Last Modified: Nov 07, 2022

Bug Tracker

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

Known Affected Versions:
16.0.0,, 16.0.1,,

Fixed In:

Opened: Sep 01, 2020
Severity: 3-Major


When congestion is experienced in the network, all end user client traffic is affected, including video traffic. Enabling Explicit Congestion Notification (ECN) and setting the flow value ECN bits to 3 in the IP header helps to manage the congestion.


Congestion in the network is unresolved.


-- Congestion is experienced in the network -- Video traffic is affected.



Fix Information

With this feature enabled and if the flow value has ECN bits set to 3, the BIG-IP system applies the actions associated with the PEM Policy. In the PEM policy you can apply rate limiting to the applicable (existing video) traffic.

Behavior Change