Bug ID 833173: SFP interfaces are flapping on 2xxx/4xxx on version 15.0.x

Last Modified: Oct 06, 2020

Bug Tracker

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

Known Affected Versions:
15.0.0, 15.0.1,,,,

Fixed In:

Opened: Oct 03, 2019
Severity: 2-Critical


SFP interfaces start flapping immediately after booting up 2xxx/4xxx platforms, and it takes some time to goes into an up/running state.


Interface are unusable until it stops flapping and goes into an up/running state.


Happens on the following platforms with BIG-IP 15.0.x using the SFP interface: 2000s/2200v 4000s/4400v


There is no known mitigation except to wait for the interface to go into the up/running state.

Fix Information

Enough time is provided for the SFP interface to complete initialization and go into the up/running state.

Behavior Change