Bug ID 1250085: BPDU is not processed with STP passthough mode enabled in BIG-IP

Last Modified: Feb 07, 2024

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

Known Affected Versions:
16.1.0, 16.1.1, 16.1.2,,, 16.1.3,,,,,, 17.0.0,,, 17.1.0,,,

Fixed In:
17.1.1, 16.1.4

Opened: Feb 22, 2023

Severity: 3-Major


- Connected interfaces under a VLAN. - Bridge Protocol Data Unit (BPDU) is not transmitted through BIG-IP which is in passthrough mode. - Can see DST MAC STP (Mac: 01:80:c2:00:00:00) IN packets and missing OUT packets in TCP dump. - No packet drop for DST MAC PVST (MAC:01:00:0C:CC:CC:CD) and VTP (MAC:01:00:0C:CC:CC:CC). tshark -nnr < .pcap >


BPDU packets will not pass through other devices if BIG-IP is in the middle of the topology with passthrough mode enabled.


- Platforms C117, C115, C112, and C113



Fix Information

STP passthrough mode now works as expected on C117, C115, C112, and C113 platforms

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips