Last Modified: Apr 28, 2025
Affected Product(s):
BIG-IP LTM
Known Affected Versions:
10.2.4, 11.3.0, 11.4.0, 11.4.1, 11.5.0, 11.5.1, 11.5.1 HF1, 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, 11.5.1 HF10, 11.5.1 HF11, 11.5.2, 11.5.2 HF1, 11.6.0, 11.6.0 HF1, 11.6.0 HF2, 11.6.0 HF3, 11.6.0 HF4, 11.6.0 HF5, 11.6.0 HF6, 11.6.0 HF7, 11.6.0 HF8, 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, 12.1.3.1, 12.1.3.2, 12.1.3.3, 12.1.3.4, 12.1.3.5, 12.1.3.6, 12.1.3.7, 12.1.4, 12.1.4.1, 12.1.5, 12.1.5.1, 12.1.5.2, 12.1.5.3, 12.1.6
Fixed In:
12.0.0, 11.6.1, 11.5.3, 11.4.1 HF9
Opened: Jan 05, 2015 Severity: 3-Major Related Article:
K16623
On a standby unit with a vlangroup configured with multiple VLAN members and bridge_in_standby attribute set to false, the unit might still bridge network ingress packets across the vlangroup, if those packet happen to match the host monitor traffic flows.
This results in a traffic bridging loop among active and standby unis. Excessive traffic load might take down monitors on the BIG-IP system.
This occurs when the following conditions are met: Configure a vlangroup with multiple VLAN members in HA configuration and set vlangroup's bridge_in_standby attribute to false. Configure monitors to use non-default monitor rules (ICMP, etc.).
None.
Standby unit no longer bridges network ingress packets when bridge_in_standby is disabled. This is correct behavior.