Configuring a Port as an Edge Port and BPDU Filter Port
Context
If a designated port is located at the edge of a network and is directly connected to terminals, this port is called edge port. The switch does not learn whether a port is directly connected to terminals, the port needs to be manually configured as an edge port.
An edge port does not receive or process configuration BPDUs, or participate in VBST calculation. It can transit from Disable to Forwarding without any delay to implement fast convergence.
After a designated port is configured as an edge port, the port can still send BPDUs. Then BPDUs are sent to other networks, causing flapping of other networks. You can configure a port as an edge port and BPDU filter port so that the port does not process or send BPDUs.
After all ports are configured as edge ports and BPDU filter ports in the system view, none of ports on the switch send BPDUs or negotiate the VBST status with directly connected ports on the peer device. All ports are in forwarding state. This may cause loops on the network, leading to broadcast storms. Exercise caution when you configure a port as an edge port and BPDU filter port.
After a port is configured as an edge port and BPDU filter port in the interface view, the port does not process or send BPDUs. The port cannot negotiate the VBST status with the directly connected port on the peer device. Exercise caution when you configure a port as an edge port and BPDU filter port.