3com 3031 Instruccion De Instalación

C

HAPTER

 16: L

OGIC

 I

NTERFACE

 C

ONFIGURATION

must be an address of 32-bit mask and must be advertised through a routing 
protocol.

 The Loopback interface is introduced for satisfying such a need.

Perform the following tasks to configure a loopback interface:

■

Create a loopback interface

■

Configure the operating parameters of the interface

You can configure the parameters like IP address and IP routing for a loopback 
interface. For details, refer to Part V “Network Protocol”.

This section describes the configuration of a Null interface.

3Com Series Routers support the Null interface. Such an interface is always UP but 
cannot forward packets. In addition, no IP address or other  link layer protocols 
can be configured on it.

Null interface is the logical interface of pure software property. Therefore, all the 
network specific packets sent to the interface will be dropped.

Perform the following tasks to configure a Null interface:

■

Create a Null interface

■

Configure the interface operating parameters

Perform the following in the System View to create the interface Null 0 on a 3Com 
router.

Table 247   Creating/Deleting a loopback interface

Create a loopback interface and enter the 
loopback interface view

Delete the specified loopback interface

Table 248   Creating/Deleting a Null interface

Create a Null interface and enter the Null interface view

Delete the Null interface