Netgear XSM4324FS CLI Manual Software Version 12.x - Page 383

M4300 Intelligent Edge Series Fully Managed Stackable Switches On receipt of an RLQ response, if the answer is negative, the receiving port has lost connection to the root and its BPDU is immediately aged out. If all nondesignated ports have already received a negative answer, the whole bridge has lost the root and can start the STP calculation from scratch. If the answer confirms the switch can access the root bridge on a port, it can immediately age out the port on which it initially received the inferior BPDU. A bridge that sends an RLQ puts its bridge ID in the PDU. This ensures that it does not flood the response on designated ports. A bridge that receives an RLQ and has connectivity to the root forwards the query toward the root through its root port. A bridge that receives a RLQ request and does not have connectivity to the root (switch bridge ID is different from the root bridge ID in the query) or is the root bridge immediately answers the query with its root bridge ID. RLQ responses are flooded on designated ports. Default Format Mode NA spanning-tree backbonefast Global Config no spanning-tree backbonefast This command disables backbonefast. Note: PVRSTP embeds support for FastBackbone and FastUplink. Even if FastUplink and FastBackbone are configured, they are effective only in PVSTP mode. Format Mode no spanning-tree backbonefast Global Config spanning-tree bpdufilter Use this command to enable BPDU Filter on an interface or range of interfaces. Default Format Mode Disabled spanning-tree bpdufilter Interface Config Switching Commands 383 CLI Command Reference Manual