Last Modified: Oct 06, 2020
See more info
Known Affected Versions:
11.2.1, 11.3.0, 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, 11.5.1 HF5, 11.5.1 HF6, 11.5.1 HF7, 11.5.1 HF8, 11.5.1 HF9, 11.5.10
11.6.0, 11.5.2, 11.4.1 HF9
Opened: Feb 03, 2014
Related AskF5 Article: K15215
On BIG-IP 2000-/4000-series appliances, modifying an interface's VLAN configuration from tagged to untagged, or untagged to tagged, can result in unavailability of traffic on that interface.
Traffic does not pass after this change, until TMM is restarted.
This occurs on BIG-IP 2000-series or 4000-series appliance, connected to an upstream network that expects a tagged (or alternately, untagged) VLAN.
Restarting the tmm with 'bigstart restart tmm' corrects this condition, as does deleting and recreating the VLAN with desired tagging attributes.
VLAN tagged/untagged configuration change occurs immediately, and no longer requires tmm restart.