display loopback-detect block

Function

The display loopback-detect block command displays information about all blocked interfaces which have loops occurred.

Format

display loopback-detect block all

display loopback-detect block interface { interface-name | interface-type interface-num }

Parameters

Parameter	Description	Value
interface interface-name	Specifies an interface name.	-
interface interface-type	Specifies an interface type.	-
interface interface-num	Specifies an interface number.	-
all	Specifies all interfaces.	-

Views

All views

Default Level

1: Monitoring level

Task Name and Operations

Task Name	Operations
vlan	read

Usage Guidelines

Usage Scenario

To check information about all blocked interfaces which have loops occurred, run the display loopback-detect block command. The command output helps analyze and locate faults.

Example

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

# Display information about all blocked interfaces which have loops occurred.

<HUAWEI> display loopback-detect block all
 Info: There is no block interface in this router.

**Table 1** Description of the **display loopback-detect block** command output
Item	Description
Info	Self-loop detection information.