40
display interface null
Syntax
display interface
null
[
brief
[
down
] ] [
|
{
begin
|
exclude
|
include
}
regular-expression
]
display interface
null
0
[
brief
] [
|
{
begin
|
exclude
|
include
}
regular-expression
]
View
Any view
Default level
1: Monitor level
Parameters
0
: Specifies interface Null 0. The null interface number is fixed to 0.
brief
: Displays brief interface information. If you do not specify this keyword, this command displays
detailed interface information.
down
: Displays information about interfaces in the DOWN state and the causes. If you do not specify
this keyword, this command displays information about interfaces in all states.
|
: 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 interface null
command to display information about the null interface. Since Null 0
interface is the only null interface on a device, this command displays information about Null 0 interface
even if you do not specify the
0
keyword.
•
If you do not specify the
null
keyword, this command displays information about all interfaces on
the device.
•
If you specify the
null
keyword, this command displays information about interface Null 0 with or
without the
0
keyword, because the device supports only one interface Null 0.
Related commands:
interface null
.
Examples
# Display information about null interface Null 0.
<Sysname> display interface null 0
NULL0 current state :UP
Line protocol current state :UP (spoofing)
Description : NULL0 Interface
The Maximum Transmit Unit is 1500
Internet protocol processing : disabled
Physical is NULL DEV
Last clearing of counters: Never
Last 300 seconds input: 0 bytes/sec, 0 bits/sec, 0 packets/sec
