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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 logical
channel such as X.25 on any interface or a virtual circuit of a frame 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 the backup
interface of aother interface or logical channel.
z
A main interface can be provided with multiple backup interfaces; when the main
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 by 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 Specify the backup interface and priority used by the main interface.
z Set the delay time for the switchover between main and backup interfaces.
z
Set state-judging conditions when the main interface is a logical channel.
z Set the state-judging conditions when the backup interface is a logical channel.
z
Configure 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 the following commands in
global configuration mode to enter the configuration mode of the interface.
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 interface or
sub-interface. Combined, they specify a physical interface or sub-interface.