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Danh mục sản phẩm

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.