Loop Port Shutdown (Ethernet Port Attribute)

Description

The Loop Port Shutdown (Ethernet Port Attribute) parameter is set to disable the self-loop port after a self-loop port is detected if the loop port shutdown function is enabled. After the self-loop port is shut down, the self-loop port only transmits or receives the self-loop detection packets rather than any other packets. If the port is not a self-loop port, it starts to work again.

Impact on the System

If a port enables the loop port shut-down function, the IEEE 802.3ah protocol blocks the port once the port is detected to be a self-loop port. In this case, the services at the port are interrupted. All the packets based on the upper-level protocol are discarded.

Values

Valid Values	Default Value
Enabled, Disabled	Enabled

Configuration Guidelines

To block a self-loop port, select Enabled. Otherwise, select Disabled.

Relationship with Other Parameters

The loop port shutdown function takes effect only after the IEEE 802.3ah protocol and the loop detection function are enabled.