User Manual - Configuration Guide (Volume 3)
Versatile Routing Platform Chapter 1
Configuration of Backup Center
1-1
Chapter 1 Configuration of Backup Center

1.1 Backup Center Overview

To enhance network’s reliability, VRP provides perfect backup functions through the
use of Backup Center.
z Interfaces that can be backed up are called main interfaces . Every physical
interface or sub-interface on a router can serve as a main interface. A logica l
channel such as X.25 on any interface or a virtual circuit of a f rame relay can also
serve as a main interface.
z Any physical interface, virtual interface template, or a logical channel on an
interface other than the Ethernet interface of a router can serve as th e backup
interface of aother interface or logical channel.
z A main interf ace c an be pr ovided with m ultipl e bac k up interf aces; when th e m ain
interface gets faulty, backup interfaces can take over the main interface’s work in
an order based on their priority.
z Interfaces (such as ISDN BRI and ISDN PRI interfaces) that have multiple
physical channels can provide backups to multiple main interfaces b y using Dialer
Map.

1.2 Configuring the Backup Center

1.2.1 Configuration Task List

Follow the steps below to configure VRP backup center.
z Enter the configuration mode of the main interface to be backed up.
z Specif y the backup interface and priority used by the main interface.
z Set t he delay time for the switchover between main and backup interfaces.
z Set st ate-judging conditions when the main interface is a logical cha nnel.
z Set t he state-judging conditions when the backup interface is a logical cha nnel.
z Conf igure routes for main and backup interfaces.

1.2.2 Entering the Configuration Mode of the Main Interface to be Backed Up

On a Quidway router, not only every physical interface or sub-interfaces of the router,
but every virtual circuit of X.25 or frame relay can work as a main interface. If the main
interface is a physical interface or sub-interface, please use t he following commands in
global configuration mode to enter the configuration mode of the interf ace.
Table LC-1-1 Enter the configuration mode of the main interface
Operation Command
Enter the configuration mode of the main interface interface interface-type interface-number
Here, interface-type specifies the interface type of the physical interface or sub-
interface, interface-number specifies the interface number of the physical in terface or
sub-interface. Combined, they specify a physical interface or sub-interf ace.