Bug ID 674367: SDD v3 symmetric deduplication may stop working indefinitely

Last Modified: Jun 10, 2021

Bug Tracker

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

Known Affected Versions:
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,,,,,,,, 12.1.4, 13.0.0, 13.0.0 HF1, 13.0.0 HF2, 13.0.0 HF3, 13.0.1, 13.1.0,,,,,,,,, 13.1.1,,,,, 13.1.3,,,,,,, 13.1.4,

Fixed In:

Opened: Jul 17, 2017
Severity: 3-Major
Related AskF5 Article:


In certain high availability (HA) configurations and after performing specific maintenance tasks involving failovers, SDD v3 symmetric deduplication may stop working indefinitely.


Applications no longer benefit from symmetric deduplication, increasing the amount of data transmitted over the WAN.


This issue occurs when all of the following conditions are met: 1) A BIG-IP HA configuration is deployed on each side of the WOM tunnel. 2) Symmetric deduplication is configured to use the SDD v3 codec. 3) Applications configured to benefit from symmetric deduplication are actively passing traffic. 4) Both BIG-IP HA pairs (the near and far sides) are failed over concurrently (although in more rare cases, even failing over a single pair is sufficient to reproduce the issue).


Restarting the services on all BIG-IP units involved in the topology (without performing additional failovers after they return on-line) restores symmetric deduplication functionality. This will cause some downtime.

Fix Information

Performing failovers in AAM environment no longer breaks SDD v3 symmetric deduplication.

Behavior Change