Bug ID 1538277: Duplicate Service-Instance IDs for L2FwdSvc causes L2 entries to not be forwarded to all blades

Last Modified: Apr 01, 2025

Affected Product(s):
F5OS F5OS-C(all modules)

Known Affected Versions:
F5OS-C 1.6.0, F5OS-C 1.6.1, F5OS-C 1.6.2

Fixed In:
F5OS-C 1.8.0

Opened: Feb 15, 2024

Severity: 2-Critical

Symptoms

Excessive DLFs in multi-bladed system causing traffic instability.

Impact

L2 entries are not forwarded to the affected blades causing excessive DLFs.

Conditions

Two `L2FwdSvc` entries in the service-instance table have duplicate 'instance IDs'

Workaround

Reboot the higher number blade having the duplicate instance ID.

Fix Information

Don't use the instance ID as the key into a map, using the slot number instead which is guranteed to be unique.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips