stp edged-port
Function
The stp edged-port enable command sets the current port as an edge port.
The stp edged-port disable command sets the current port as a non-edge port.
The undo stp edged-port command restores the default attribute of an edge port.
By default, all the ports on the switching device are non-edge ports.
After STP is enabled on a port, edge-port detecting is started automatically. If the port fails to receive BPDU packets within (2 x Hello Timer + 1) seconds, the port is set to an edge port. Otherwise, the port is set to a non-edge port. If the stp edged-port enable or stp edged-port disable command is executed in the interface view or the stp edged-port default command is configured in the system view, automatic detection of the edge port becomes invalid.
Parameters
| Parameter | Description | Value |
|---|---|---|
| enable | Sets the current port as an edge port. | - |
| disable | Sets the current port as a non-edge port. | - |
Views
Ethernet interface view, GE interface view, XGE interface view, MultiGE interface view, 40GE interface view, 100GE interface view, Eth-Trunk interface view, port group view, 25GE interface view
Usage Guidelines
Usage Scenario
On a Layer 2 network running a spanning tree protocol, a port connected to terminals does not need to participate in spanning tree calculation. If the port participates in spanning tree calculation, the network convergence speed will be affected. In addition, status changes of the port may cause network flapping, interrupting user traffic. To address this problem, you can run the stp edged-port enable command to configure the port as an edge port. Then, the port will not participate in the spanning tree calculation. This speeds up network convergence and improves network stability.
Precautions
An edge port does not participate in spanning tree calculation. The edge port can transition from Disable to Forwarding state immediately without a delay. The switch automatically configures an edge port as a non-edge port once the edge port receives a configuration BPDU. Then the spanning tree is recalculated.
After the stp edged-port default command is run, a port that has been configured with the undo stp edged-port command will become an edge port. After the stp edged-port disable command is run, the port that has been configured with the undo stp edged-port command, however, will still serve as a non-edge port.