H3C S6850 Series Configuration Guide

2
interface loopback interface-number
3. Configure the interface description.
description text
The default setting is interface name Interface (for example, LoopBack1 Interface).
4. Configure the expected bandwidth of the loopback interface.
bandwidth bandwidth-value
By default, the expected bandwidth of a loopback interface is 0 kbps.
5. Bring up the loopback interface.
undo shutdown
By default, a loopback interface is up.
Configuring a null interface
1. Enter system view.
system-view
2. Enter null interface view.
interface null 0
Interface Null 0 is the default null interface on the device and cannot be manually created or
removed.
Only one null interface, Null 0, is supported on the device. The null interface number is always
0.
3. Configure the interface description.
description text
The default setting is NULL0 Interface.
Restoring the default settings for an interface
Restrictions and guidelines
CAUTION:
This feature might interrupt ongoing network services. Make sure you are fully aware of the impact
of this feature when you use it on a live network.
This feature might fail to restore the default settings for some commands because of command
dependencies or system restrictions. You can use the
display this command in interface view
to check for these commands and perform their
undo forms or follow the command reference to
restore their default settings. If your restoration attempt still fails, follow the error message to resolve
the problem.
Procedure
1. Enter system view.
system-view
2. Enter loopback interface view or null interface view.
{ interface loopback interface-number
{ interface null 0
3. Restore the default settings for the interface.
default

H3C S6850 Series Specifications

General

Brand	H3C
Model	S6850 Series
Category	Switch
Language	English