Bug ID 930633: Delay in using new route updates by existing connections on BIG-IP.

Last Modified: Nov 07, 2022

Bug Tracker

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

Known Affected Versions:
14.1.0, 14.1.0.1, 14.1.0.2, 14.1.0.3, 14.1.0.5, 14.1.0.6, 14.1.2, 14.1.2.1, 14.1.2.2, 14.1.2.3, 14.1.2.4, 14.1.2.5, 14.1.2.6, 14.1.2.7, 14.1.2.8, 14.1.3, 14.1.3.1, 14.1.4, 14.1.4.1, 14.1.4.2, 14.1.4.3, 14.1.4.4, 15.1.0, 15.1.0.1, 15.1.0.2, 15.1.0.3, 15.1.0.4, 15.1.0.5, 15.1.1, 15.1.2, 15.1.2.1, 15.1.3, 15.1.3.1, 15.1.4, 15.1.4.1, 15.1.5

Fixed In:
16.1.0, 15.1.5.1, 14.1.4.5

Opened: Jul 23, 2020
Severity: 3-Major

Symptoms

If routes are updated in BIG-IP by static or dynamic methods, the existing connections will not use the new routes until ~1-8 seconds later.

Impact

Performance might be degraded when routes are updated for existing connections on BIG-IP.

Conditions

Routes for existing connections on the BIG-IP are updated.

Workaround

None

Fix Information

Added DB varible "tmm.inline_route_update". When enabled, packets are checked for new routes before sending out. Its disabled by default.

Behavior Change

A new db variable has been added, called tmm.inline_route_update. It is disabled by default. When enabled, packets are checked for new routes before sending out.