Configure Basic Functions of Loopback Interface
Configuration Condition
No
Configure Loopback Interface
Table 5-2 Configure Loopback interface
|
Step
|
Command
|
Description
|
|
Enter the global configuration mode
|
configure terminal
|
-
|
| Create Loopback interface |
interface loopback unit-number
|
Mandatory
By default, do not create Loopback interface.
|
Configure Interface Logical Bandwidth
The logical bandwidth of the interface affects the calculation of the route cost and QoS, but does not affect the physical bandwidth of the interface. Usually, when the interface is connected to WAN, it is suggested that the logical bandwidth of the user configuration interface is consistent with the actual bandwidth of the leased line.
Table 5-3 Configure the logical bandwidth of the interface
|
Step
|
Command
|
Description
|
|
Enter the global configuration mode
|
configure terminal
|
-
|
|
Enter the interface configuration mode
|
interface interface-name
|
-
|
|
Configure the logical bandwidth of the interface
|
bandwidth width-value
|
Optional
By default, the logical bandwidth of Loopback interface is 8,000,000 Kbps.
|
Configure Interface Delay
The interface delay configuration affects the calculation of the routing protocol cost, but does not affect the actual transmission delay of the interface. The user can change the cost of the routing protocol by configuring the interface delay.
Table 5-4 Configure interface delay
|
Step
|
Command
|
Description
|
|
Enter the global configuration mode
|
configure terminal
|
-
|
|
Enter the interface configuration mode
|
interface interface-name
|
-
|
|
Configure interface delay
|
delay delay-time
|
Optional
By default, the delay of the Loopback interface is 5000 and the unit is 10 ms.
|
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