display interface brief

Function

The display interface brief command displays brief information about all interfaces on a device, including the physical status and link protocol status of the interface, latest inbound and outbound bandwidth usage, and the number of received and sent error packets.

Format

display interface brief [ main ] [ | { begin | exclude | include } regular-expression ]

Parameters

Parameter	Description	Value
main	Displays brief information about the main interface.	-
\|	Filters the output by using the regular expression.	-
begin	Displays the information from the line containing the regular expression.	-
include	Displays all the lines that contain the regular expression.	-
exclude	Displays all the lines that do not contain the regular expression.	-
regular-expression	Specifies the regular expression.	-

Views

All views

Default Level

1: Monitoring level

Usage Guidelines

The reset counters interface command displays the interface statistics displayed by using the display interface brief command.

Example

# Display brief information about all interfaces on the current device.

<sysname> display interface brief

PHY: Physical
*down: administratively down

^down: standby

(l):loopback

(s):spoofing

(b): BFD down
(e): ETHOAM down

(d):Dampening Suppressed

InUti/OutUti: input utility/output utility

Interface                PHY   Protocol  InUti  OutUti  inErrors    outErrors

Eth-Trunk0               down  down         3%      7%        12            0

GigabitEthernet 0/0/1     up    up          50%     60%        23          125

Tunnel0                  up    down         --      --         0            0

Vlanif2                  down  down         --      --         0            0

# Display brief information about all main interfaces on the current device.

<sysname> display interface brief main
PHY: Physical
*down: administratively down
^down: standby
(l):loopback
(s):spoofing
(b): BFD down
(d):Dampening Suppressed
InUti/OutUti: input utility/output utility
Interface                         PHY      Protocol  InUti  OutUti  inErrors   outErrors
Eth-Trunk0                        down     down         7%     12%         0           0
GigabitEthernet 0/0/1              up       up          50%     60%        23         125
Eth-Trunk1                        down     down         0%      0%         0           0

Item	Description
Interface	Indicates the name and number of an interface. All interfaces are displayed in the alphabetical order. If logical interfaces have member interfaces, these member interfaces are displayed in alphabetical order. The first character of each line in the output is indented by two spaces. If the bandwidth of an interface exceeds 1 GB, the bandwidth value is displayed following the interface name. Interface types are the same as those displayed in the display interface command output, including but not limited to the following types: AUX Eth-Trunk GigabitEthernet Loopback NULL Tunnel Virtual-Template Vlanif
PHY	Indicates the physical status of the interface, including: Up: indicates that the physical layer of this interface works properly. Down: indicates that the physical layer of this interface becomes faulty. down: refers to Administratively Down, indicating that the administrator has run the shutdown (interface view)* command on this interface. ^down: refers to standby, indicating that this interface is a standby interface. (l): refers to loopback, indicating that this interface is enabled with the loopback function. (b): refers to BFD Down, indicating that the physical layer of the interface is in the BFD Down state.
Protocol	Indicates the link layer protocol status of the interface, including: Up: indicates that the link layer protocol of this interface works properly. Down: indicates that the link layer protocol of this interface becomes faulty. (l): refers to loopback, indicating that this interface is enabled with the loopback function. (s): refers to spoofing, indicating that this interface is enabled with the spoofing function. (b): refers to BFD Down, indicating that the link layer protocol of the interface is in the BFD Down state. (e): refers to ETHOAM Down, indicating that the link layer protocol of the interface is in the ETHOAM Down state. (d): refers to dampening suppressed, indicating that the protocol of the interface is suppressed. Blank: indicates that the interface is not configured with a link layer protocol.
InUti	Indicates the average inbound bandwidth usage of this interface in the last 300 seconds. Average inbound bandwidth usage in the last 300 seconds = Average inbound rate in the last 300 seconds/Interface bandwidth. When the average inbound bandwidth usage is lower than 0.01% and this interface is receiving traffic, the value 0.01% is displayed. When the interface bandwidth becomes lower (for example, the bandwidth of an Ethernet interface is adjusted through the speed command), bandwidth usage may become 100% because the volume of traffic is not adjusted in time. "--" indicates that this type of interface does not support the display of bandwidth usage.
OutUti	Indicates the average outbound bandwidth usage in the last 300 seconds. Average outbound bandwidth usage in the last 300 seconds = Average outbound rate in the last 300 seconds/Interface bandwidth. When the average outbound bandwidth usage is lower than 0.01% and this interface is sending traffic, the value 0.01% is displayed. When the interface bandwidth becomes lower (for example, the bandwidth of an Ethernet interface is adjusted through the speed command), bandwidth usage may become 100% because the volume of traffic is not adjusted in time. "--" indicates that this type of interface does not support the display of bandwidth usage.
InErrors	Indicates the number of error packets received by an interface. After the reset counters interface command is run in the user view or the number of received error packets reaches the maximum value 0xFFFFFFFF, the number of received error packets is set to 0.
OutErrors	Indicates the number of error packets sent by an interface. After the reset counters interface command is run in the user view or the number of sent error packets reaches the maximum value 0xFFFFFFFF, the number of sent error packets is set to 0.