Bug ID 488921: BIG-IP system sends unnecessary gratuitous ARPs

Last Modified: Apr 10, 2019

Bug Tracker

Affected Product:  See more info
BIG-IP None(all modules)

Known Affected Versions:
11.4.0, 11.4.1, 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, 11.5.2, 11.5.2 HF1, 11.5.3, 11.5.3 HF1, 11.5.3 HF2, 11.5.4, 11.5.4 HF1, 11.5.4 HF2, 11.5.4 HF3, 11.5.4 HF4, 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, 12.1.0, 12.1.0 HF1, 12.1.0 HF2, 12.1.1, 12.1.1 HF1, 12.1.1 HF2, 12.1.2, 12.1.2 HF1, 12.1.2 HF2, 12.1.3, 12.1.3.1, 12.1.3.2, 12.1.3.3, 12.1.3.4, 12.1.3.5, 12.1.3.6, 12.1.3.7, 12.1.4, 12.1.4.1

Fixed In:
12.0.0, 11.6.1, 11.5.5

Opened: Nov 06, 2014
Severity: 3-Major
Related AskF5 Article:
K12464069

Symptoms

The BIG-IP system sends unnecessary gratuitous ARPs for its virtual IP addresses and self IP addresses.

Impact

The BIG-IP system sends out a large number of unwanted gratuitous ARPs if the virtual server changes its status rapidly. If devices connected to the BIG-IP system have rate limits configured, the devices might start ignoring the ARPs sent by the BIG-IP system, which might cause the devices to miss the critical gratuitous ARPs sent on HA failover. This might affect HA functionality.

Conditions

When the virtual server status transitions from online to offline status or vice versa.

Workaround

None

Fix Information

The system no longer sends unnecessary gratuitous ARPs when pool member state changes cause virtual server status changes.

Behavior Change