Last Modified: Apr 28, 2025
Affected Product(s):
BIG-IP AAM
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, 12.1.3.1, 12.1.3.2, 12.1.3.3, 13.0.0, 13.0.0 HF1, 13.0.0 HF2, 13.0.0 HF3, 13.0.1
Fixed In:
13.1.0, 12.1.3.4
Opened: Jul 10, 2017 Severity: 2-Critical Related Article:
K68275280
In certain high availability (HA) configurations and after performing specific maintenance tasks involving failovers, SDD v3 symmetric deduplication may start performing poorly for some file transfers.
Symmetric deduplication is severely impacted (virtually no hits) for files that had previously been transferred through the units. This causes the amount of data transmitted over the WAN to increase. Files that were not transferred previously through the units are not affected by this issue.
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) The far side BIG-IP HA configuration (from the perspective of the client performing the download) is failed over. 4) Clients attempt to download files that had previously been transferred through the BIG-IP units.
To eliminate the impacted symmetric deduplication condition, restart the receiving (i.e., the near) side.
SDD v3 symmetric deduplication no longer performs poorly after a failover event.