stp edged-port (Ethernet interface view)

Function

The stp edged-port command sets a port as an edge or a non-edge port.

The undo stp edged-port command restores the default setting.

By default, all ports are non-edge ports.

Format

stp edged-port { enable | disable }

undo stp edged-port

Parameters

Parameter	Description	Value
enable	Sets the current port as an edge port.	-
disable	Sets the current port as a non-edge port.	-

Parameter

Description

Value

enable

Sets the current port as an edge port.

disable

Sets the current port as a non-edge port.

Views

100GE interface view, 10GE interface view, 25GE interface view, 400GE interface view, 40GE interface view, 50GE interface view, Eth-Trunk interface view, GE optical interface view, GE electrical interface view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
mstp	write

Usage Guidelines

Usage Scenario

On a Layer 2 network running STP, if a port connected to a terminal is configured as an edge port using the stp edged-port enable command, the port will not participate in spanning tree calculation. This speeds up network convergence and improves network stability.

Running the stp edged-port enable command in the interface view configures only the current port as a bridge protocol data unit (BPDU)-filter port. If multiple BPDU-filter ports are required on a device, run the stp edged-port default command in the system view to configure all the ports as BPDU-filter ports, and then run the stp edged-port disable command in the view of the interfaces that need to participate in spanning tree calculation.

If a port has been configured as a non-BPDU filter port using the stp edged-port disable command, it remains a non-BPDU filter port, even if the stp edged-port default command is run.

Configuration Impact

After the stp edged-port enable or stp edged-port disable command is run to set the current port to an edge or a non-edge port, the edge-port automatic detection function does not take effect. After the undo stp edged-port command is used to restore the default setting, the edge-port automatic detection function takes effect.

Precautions

An edge port is automatically changed to a non-edge port after receiving a BPDU, and the spanning tree is recalculated.
A non-edge port configured using the undo stp edged-port command will become an edge port if the stp edged-port default command is run in the system view. However, a non-edge port configured using the stp edged-port disable command remains a non-edge port, even if the stp edged-port default command is run in the system view.
To prevent an edge port from becoming a non-edge port after the edge port receives bogus BPDUs, run the stp bpdu-protection command in the system view to configure BPDU protection. After BPDU protection is configured, if an edge port receives a BPDU, the device where the edge port resides shuts down the edge port but retains the edge port attribute. Meanwhile, the device notifies the NMS of the shutdown event.

Example

# Set interface Eth-Trunk1 as an edge port.

<HUAWEI> system-view
[~HUAWEI] interface eth-trunk 1
[*HUAWEI-Eth-Trunk1] portswitch
[*HUAWEI-Eth-Trunk1] stp edged-port enable