Last Modified: Oct 06, 2020
See more info
Known Affected Versions:
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, 11.5.2, 11.5.2 HF1, 11.5.3, 11.5.3 HF1, 11.5.3 HF2, 11.5.4, 11.5.4 HF1, 11.5.4 HF2, 11.5.4 HF3, 11.5.4 HF4, 11.5.5, 11.5.6, 11.5.7, 11.5.8, 11.5.9
Opened: Mar 11, 2014
Related AskF5 Article: K15602
BIG/IP fails to bridge packets when in a traffic group layout in Standby mode, and the system is configured for using MAC masquerade.
Packet loss may occur for network packets that are destined for the affected traffic group's MAC masquerade address. As a result of this issue, you may encounter the following symptoms: -- After failover, the standby unit fails to bridge the network packets destined for the affected traffic group's MAC masquerade address. -- When performing a tcpdump on the affected interface, you may observe packet loss. Network services that use the affected traffic group may not be available.
This issue occurs when all of the following conditions are met: -- You are running the BIG-IP 2000/4000 series platforms. -- You have configured the traffic group to use a MAC masquerade address. -- Following a failover event, the standby BIG-IP system continues to receive network traffic.
Standby BIG-IP system no longer fails to bridge network packets destined for traffic group MAC masquerade address.