HP MSR2000/3000/4000 Router Series Interface Command Reference

179
Field Description
Cause
Cause of the interface down event. If the interface has been shut down by
using the shutdown command, this field displays Administratively. To
restore the physical state of the interface, execute the undo shutdown
command.
Related commands
• interface loopback
• reset counters interface loopback
display interface null
Use display interface null to display information about the null interface.
Syntax
display interface [ null [ 0 ] ] [ brief [ description ] ]
Views
Any view
Predefined user roles
network-admin
network-operator
Parameters
0: Specifies interface Null 0.
brief: Displays brief interface information. If you do not specify this keyword, the command displays
detailed interface information.
description: Displays complete interface descriptions. If you do not specify this keyword, the command
displays only the first 27 characters of interface descriptions.
Usage guidelines
If the null keyword is not specified, the command displays information about all interfaces of the device.
If the null keyword is specified but the 0 keyword is not specified, the command displays information
about interface Null 0, because the device has only one null interface Null 0.
Examples
# Display detailed information about interface Null 0.
<Sysname> display interface null 0
NULL0
Current state: UP
Line protocol state: UP (spoofing)
Description: NULL0 Interface
Bandwidth: 0kbps
Maximum Transmit Unit: 1500
Internet protocol processing: disabled
Physical: NULL DEV
Last clearing of counters: Never