display l2-loop-detect status-info

Function

The display l2-loop-detect status-info command displays information about Layer 2 loop detection.

Format

display l2-loop-detect status-info slot slot-id

Parameters

Parameter	Description	Value
slot slot-id	Specifies the slot ID.	-

Parameter

Description

Value

slot slot-id

Specifies the slot ID.

Views

All views

Default Level

1: Monitoring level

Task Name and Operations

Task Name	Operations
device-mgr	read

Usage Guidelines

Usage Scenario

The CPU determines whether to enable or disable Layer 2 loop detection based on packet loss caused by the CAR. Run the display l2-loop-detect status-info command to display information about Layer 2 loop detection. The information includes actions in response to Layer 2 loops, interfaces where Layer 2 loops occur, loop level, and interface status.

Example

The actual command output varies according to the device. The command output here is only an example.

# Display information about Layer 2 loop detection on the board in slot 1.

<HUAWEI> display l2-loop-detect status-info slot 1
l2-loop-detect action : trap and shutdown
  port in loop-state :
  ------------------------------------------------------------
  Interface                       LoopLevel        State
  GigabitEthernet0/1/0               Determined       Down

**Table 1** Description of the **display l2-loop-detect status-info** command output
Item	Description
l2-loop-detect action	Action in response to a potential loop that is detected on a specified interface. The value can be as follows: trap: Send a trap. shutdown: Shut down the interface. trap and shutdown: Send a trap and shut down the interface. none: Ignore Layer 2 loops (A log is generated to track when Layer 2 loops occur.).
port in loop-state	Indicates the interface information about a potential loop. If no loop occurs on the interface, the system displays "none".
Interface	Name of an interface.
LoopLevel	Loop level. The value can be as follows: Determined: indicates an existing loop on an interface. Suspect: indicates that there is a relatively high possibility that there is a loop on the interface. Notification: indicates that there is a relatively low possibility that there is a loop on the interface.
State	Status of an interface: Up or Down.