Bug ID 698619: Disable port bridging on HSB ports for non-vCMP systems

Last Modified: Nov 07, 2022

Affected Product(s):
BIG-IP LTM(all modules)

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,,,,,,,, 13.0.0, 13.0.0 HF1, 13.0.0 HF2, 13.0.0 HF3, 13.0.1, 13.1.0,,,,,,,,, 13.1.1,,,, 14.0.0,,,,,, 14.0.1,

Fixed In:, 12.1.4

Opened: Dec 12, 2017

Severity: 3-Major


Internal packets flooded on internal switch interfaces by the HSB can be bridged back to the HSB on BIG-IP 5000/7000 and VIPRION B2100 blades configured to enable port bridging by the switch.


This can result in packet flooding back to the HSB and potential network saturation.


-- Packets being flooded from the HSB to VLAN members when adding/deleting VLANs. -- Non-vCMP systems. -- Virtual server configured for Direct Server Return (DSR or nPath Routing).



Fix Information

Port bridging on HSB interfaces in the switch for non-vCMP systems is now disabled on BIG/IP 5000/7000. However, this issue still occurs on B2100 blades as port bridging is required on that platform for chassis data plane support.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips