display interface description

Function

The display interface description command displays the description of an interface.

Format

display interface description [ interface-type [ interface-number ] ]

display interface description [ interface-type ] main

Parameters

Parameter	Description	Value
interface-type [ interface-number ]	Displays the description of a specified interface. If an interface type is specified but no interface number is specified, the description of all interfaces of the specified type is displayed.	-
main	Displays the description of the main interface. If an interface has no sub-interfaces, description about the interface are displayed whether you specify the main parameter or not. If an interface has sub-interfaces, description about the interface and sub-interfaces are displayed if you do not specify the main parameter.	-

Parameter

Description

Value

interface-type [ interface-number ]

Displays the description of a specified interface.

If an interface type is specified but no interface number is specified, the description of all interfaces of the specified type is displayed.

main

Displays the description of the main interface.

If an interface has no sub-interfaces, description about the interface are displayed whether you specify the main parameter or not.
If an interface has sub-interfaces, description about the interface and sub-interfaces are displayed if you do not specify the main parameter.

Views

All views

Default Level

1: Monitoring level

Usage Guidelines

Usage Scenario

The display interface command can also display the description of an interface. To quickly view the description of an interface, you are advised to use the display interface description command.

Precautions

If no interface type is specified, the description of all interfaces is displayed. If an interface type is specified but no interface number is specified, the description of all interfaces of the specified type is displayed.

If there is a great deal of statistics about traffic on Eth-Trunk interfaces, you are recommended to specify trunk-id to filter output information. Otherwise, a problem may occur due to excessive output information: The displayed information is repeatedly refreshed, and therefore required information cannot be located.

Only the S5720-EI, S5720-HI, S5730-HI, S5731-H, S5731-S, S5731S-H, S5731S-S, S5732-H, S6720-EI, S6720-HI, S6720S-EI, S6730-H, S6730S-H, S6730-S, and S6730S-S support sub-interfaces.

Example

# Display the description of GE0/0/1.

<HUAWEI> display interface description gigabitethernet 0/0/1
PHY: Physical                                                                   
*down: administratively down                                                    
#down: LBDT down                                                   
(l): loopback                                                                   
(s): spoofing                                                                   
(E): E-Trunk down   
(b): BFD down                                                                   
(e): ETHOAM down                                                                
(dl): DLDP down
(lb): LBDT block                                                                
(ms): MACsec down
Interface                     PHY     Protocol Description                      
GE0/0/1                       down    down

**Table 1** Description of the **display interface description** command output
Item	Description
Interface	Type and number of an interface. If the bandwidth of an interface exceeds 1 GB, the bandwidth value is displayed following the interface name.
PHY	Physical status of an interface: up: indicates that the interface is working properly. down: indicates that the physical layer of the interface fails. down: administratively down, indicating that the administrator has run the shutdown* command on the interface. #down: LBDT down, indicating that loopback detection is enabled on the interface. The interface is shut down when the device detects a loop on the downstream network or between interfaces. (l): loopback, indicating that the loopback function is enabled on the interface. (b): BFD down, indicating that the physical layer of the interface is in BFD Down state.
Protocol	Link layer protocol status of the interface: up: indicates that the interface is working properly. down: indicates that the link layer protocol of the interface fails. (s): spoofing, indicating that the spoofing function is enabled on the interface. (E): E-Trunk down, indicating that the interface goes down because of the E-Trunk negotiation failure. (b): indicates that the link layer of the interface is in BFD down state. (e): ETHOAM down, indicating that the link layer protocol of the interface is in ETHOAM down state. (dl): DLDP down, indicating that the link layer protocol of the interface is in DLDP down state. (lb): indicates that the interface is blocked due to loops on the downstream network or between interfaces. (ms): MACsec down, indicating that the interface is Down because MACsec is not enabled on the peer interface. NOTE: (ms): MACsec down is displayed only after the MACsec plug-in is installed. Only the S5720-SI, S5720S-SI, S5720-HI, S5720-EI, S5730-HI, S6720-SI, and S6720-EI support MACsec.
Description	Interface description.