Bug ID 569349: Packet's vlan priority is not preserved for CMP redirected flows when net cos feature is enabled

Last Modified: Apr 28, 2025

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

Known Affected Versions:
11.5.3, 11.5.3 HF1, 11.5.3 HF2, 11.5.4, 11.5.4 HF1, 11.6.0, 11.6.0 HF1, 11.6.0 HF2, 11.6.0 HF3, 11.6.0 HF4, 11.6.0 HF5, 11.6.0 HF6, 11.6.0 HF7, 11.6.0 HF8, 11.6.1, 12.0.0, 12.0.0 HF1, 12.0.0 HF2, 12.0.0 HF3, 12.0.0 HF4

Fixed In:
12.1.0, 11.6.1 HF1, 11.5.4 HF2

Opened: Jan 22, 2016

Severity: 3-Major

Symptoms

When net cos (class of Service) feature is enabled, vlan priority for those cmp redirected packets are not being preserved from ingress to egress.

Impact

Egress packets are not being processed according to the ingress vlan priority by BIG-IP and down stream router. Certain packets will be dropped by downstream router due to the wrong mark of vlan priority.

Conditions

1. net cos feature is enabled 2. packet is being cmp redirected from one tmm to another tmm for processing.

Workaround

None.

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips