Bug ID 550694: LCD display stops updating and Status LED turns/blinks Amber

Last Modified: Oct 06, 2020

Bug Tracker

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

Known Affected Versions:
11.5.0, 11.5.1, 11.5.1 HF1, 11.5.1 HF10, 11.5.1 HF11, 11.5.1 HF2, 11.5.1 HF3, 11.5.1 HF4, 11.5.1 HF5, 11.5.1 HF6, 11.5.1 HF7, 11.5.1 HF8, 11.5.1 HF9, 11.5.10, 11.5.2, 11.5.2 HF1, 11.5.3, 11.5.3 HF1, 11.5.3 HF2, 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, 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, 11.5.4

Opened: Oct 06, 2015
Severity: 3-Major
Related AskF5 Article:
K60222549

Symptoms

The LCD display may stop updating and the Status LED may turn Amber and begin blinking on BIG-IP 2000, 4000, 5000, 7000, or 10000-series appliances.

Impact

When this condition occurs, the front-panel LCD display does not display the current BIG-IP host status, and the Status LED blinks Amber. There is no impact to BIG-IP host operations, and no disruption to traffic.

Conditions

The Status LED turns Amber if the LED/LCD module stops receiving updates from the BIG-IP host, and begins blinking Amber if the LED/LCD module does not receive updates from the BIG-IP host for three minutes or longer. This condition may occur if data transfers between the BIG-IP host and the LED/LCD module over the connecting USB bus becomes stalled. Due to changes in BIG-IP v11.5.0 and later, the frequency and likelihood of this condition is greatly reduced, but may still occur under rare conditions.

Workaround

This condition can be cleared by either of the following actions: 1. Press one of the buttons on the LCD display to navigate the LCD menus. 2. Issue the following command at the BIG-IP host console: /sbin/lsusb -v -d 0451:3410. Either action generates USB traffic, which triggers recovery from the USB stalled transfer condition.

Fix Information

Auto-recovery from a USB stalled-transfer condition has been implemented, which prevents the Status LED from blinking Amber on BIG-IP 2000, 4000, 5000, 7000, 10000 or 12000-series appliances.

Behavior Change