Bug ID 655445: Provide the ability to globally specifiy a DSCP value.

Last Modified: Oct 06, 2020

Bug Tracker

Affected Product:  See more info
BIG-IP DNS, GTM(all modules)

Known Affected Versions:
12.0.0, 12.0.0 HF1, 12.0.0 HF2, 12.0.0 HF3, 12.0.0 HF4, 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, 13.0.0, 13.0.0 HF1, 13.0.0 HF2, 13.0.0 HF3, 13.0.1

Fixed In:
13.1.0, 12.1.3

Opened: Apr 05, 2017
Severity: 3-Major


The DSCP value is not configurable for some types of traffic, which can lead to dropped traffic during adverse network conditions.


BIG-IP DNS incorrectly reports resources as unavailable because monitor traffic is dropped by the network due to congestion with unrelated traffic.


Under adverse network conditions, monitor traffic can be dropped by the network.



Fix Information

Setting the new db variable tm.egressdscp to a value other than the default value of 0, results in the system setting the DSCP value for outgoing traffic to the configured value.

Behavior Change