10
Field Description
DOWN ( Link-Aggregation
interface down )
The interface is physically down because the aggregate interface
corresponding to the aggregation group to which it belongs was shut down
with the
shutdown
command.
DOWN ( OAM connection
failure )
The interface is physically down because an OAM connection fails to be
established on it or the current OAM connection is disconnected.
DOWN ( DLDP connection
failure )
The interface is physically down because a DLDP connection fails to be
established on it or the current DLDP connection is disconnected.
DOWN ( Loopback
detection-protected )
The interface is shut down because a loop is detected on it.
DOWN ( BPDU-protected )
The interface is shut down by the BPDU guard function.
DOWN ( Monitor-Link uplink
down )
The interface is physically down because the uplink of the monitor link group
to which it belongs is down.
display interface brief
Syntax
display interface
[
interface-type
[
interface-number
] ]
brief
[
|
{
begin
|
exclude
|
include
}
regular-expression
]
display interface
[
interface-type
]
brief
down
[
|
{
begin
|
exclude
|
include
}
regular-expression
]
View
Any view
Default level
1: Monitor level
Parameters
interface-type
: Specifies an interface type.
interface-number
: Specifies an interface number.
down
: Displays information about interfaces in DOWN state and the relevant causes.
|
: Filters command output by specifying a regular expression. For more information about regular
expressions, see the
Fundamentals Configuration Guide
.
begin
: Displays the first line that matches the specified regular expression and all lines that follow.
exclude
: Displays all lines that do not match the specified regular expression.
include
: Displays all lines that match the specified regular expression.
regular-expression
: Specifies a regular expression, which is a case sensitive string of 1 to 256 characters.
Description
Use the
display brief interface
command to display brief interface information.
•
If neither interface type nor interface number is specified, this command displays information about
all interfaces.
•
If only interface type is specified, this command displays information about interfaces of the
specified type.
