Last Modified: Nov 20, 2025
Affected Product(s):
BIG-IP LTM
Known Affected Versions:
15.1.0, 15.1.0.1, 15.1.0.2, 15.1.0.3, 15.1.0.4, 15.1.0.5, 15.1.1, 15.1.2, 15.1.2.1, 15.1.3, 15.1.3.1, 15.1.4, 15.1.4.1, 15.1.5, 15.1.5.1, 15.1.6, 15.1.6.1, 15.1.7
Fixed In:
17.1.0, 16.1.4, 15.1.8
Opened: Mar 18, 2022 Severity: 3-Major
The F5OS platform's cmp hash has been updated to handle only even ephemeral port numbers. Use `tmsh list/modify net vlan vlan-XYZ dag-adjustment` to view or change the settings. The recommended and default setting is xor-5mid-xor-5low.
- only even TMM threads are processing traffic
- only even port numbers are used (usually by a Linux client) - One of the following platforms: -- VELOS chassis -- r5000, r10000, or r12000-series appliance
None
F5OS platform's cmp hash has been updated to handle only even ephemeral port numbers. Traffic should be distributed evenly between all TMM threads.
F5OS platform's cmp hash has been updated to handle only even ephemeral port numbers. Traffic should be distributed evenly between all TMM threads.