Bug ID 456753: TMM crash on VE when packet is forwarded to other TMM

Last Modified: Oct 06, 2020

Bug Tracker

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

Known Affected Versions:
11.2.0, 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

Fixed In:
11.6.0, 11.5.1 HF5, 11.4.1 HF6

Opened: Apr 10, 2014
Severity: 3-Major
Related AskF5 Article:


On a Virtual Edition system, TMM may crash if it needs to forward a received packet to another TMM, and is configured with tagged interfaces in VLANs.


Traffic disrupted while tmm restarts.


This issue occurs on Virtual Edition (VE) systems that are configured to pass tagged VLANs through to the virtual machine, and if it then needs to forward a received packet to another TMM (e.g., a CMP-demoted virtual server).


It might be possible to disable use of ethernet vlan tags to avoid this problem.

Fix Information

TMM no longer may restart on Virtual Edition systems when receiving an incoming packet on a tagged VLAN that need to be forwarded to a different TMM (e.g. a CMP-demoted virtual server).

Behavior Change