Bug ID 543178: combined datagram LB and MBLB in one virtual will cause tmm busy

Last Modified: Oct 01, 2018

Bug Tracker

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

Known Affected Versions:
11.2.1

Opened: Sep 02, 2015
Severity: 3-Major

Symptoms

When MBLB is used with ip-protocol udp, tmm can experience extreme slowdown.

Impact

tmm busy, performance seriously degraded. In severe cases tmm can be killed by sod, traffic disrupted while tmm restarts."

Conditions

A virtual has both enabled datagram LB and has MBLB profile.

Workaround

Avoid using both datagram LB and MBLB at same time. this is an invalid combination.

Fix Information

None

Behavior Change