Bug ID 458529: Spanning Tree BPDUs May be Sent Faster than Received Hold Timer Values

Last Modified: Apr 10, 2019

Bug Tracker

Affected Product:  See more info
BIG-IP LTM(all modules)

Known Affected Versions:
12.0.0, 12.0.0 HF1, 12.0.0 HF2, 12.0.0 HF3, 12.0.0 HF4, 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

Opened: Apr 23, 2014
Severity: 4-Minor

Symptoms

When a BIG-IP system is running spanning tree protocol and receives BPDUs from another device containing a worse root path cost, it may not honor the hold timer value on the BPDUs received, and consequently it will send BPDUs at a faster rate than requested.

Impact

Spanning Tree BPDUs sent out more frequently than they should.

Conditions

Spanning tree is running and has a better root path cost than an adjacent switch that has a lower transmit hold count than what is configured on the BIG-IP system.

Workaround

Set the transmit hold count on the BIG-IP system to be the same as all other devices on the network that are participating in spanning tree.

Fix Information

None

Behavior Change