User's Manual

Table Of Contents
493
Users Manual of CS-6306R
Chapter 49. Reliability Configuration
Configuring Port Backup 49.1
This chapter discusses how to back up the interface, describes the backup functions on the asynchronism
serial interface, synchronism serial interface or ISDN interface.
For details about interface backup commands, refer to Interface Backup Command Reference.
49.1.1 Overview
Interface backup functions can enabled Backup interface or disabled it according to statement or flux
information of Primary interface .If primary interface is down because of lines and etc., backup interface will
enabled auto and data can send or receive through it instead of primary interface. It can add reliability from
source router to destination. If flux of primary interface is crowded, it can activate backup interface also, share
the data transportations to speed up data transportations. If primary interface is between “down” and “up” or
flux of primary interface and backup interface are both small, backup interface can be activated but not
transporting data. This can save cost of lines .The listing interfaces can be primary interface:
asynchronism serial port
ISDN
synchronism serial port
Except above types, backup interfaces include Dialer logic interface also.
49.1.2 Backup InterfaceConfigratoin Task List
If you want to configure interface backup in above interfaces ,you should do as follows in interface configure
mode.
Enabling backup and choosing the backup interface
You can also do these tasks. These tasks are optional, can provide many uses and enforce interface backup
functions.
enabling interface backup rejection
enabling flux equalization backup
49.1.3 Backup InterfaceConfigratoin Task
49.1.3.1 Enabling Backup and Choosing the Backup Interface
To realize interface backup functions, you should configure backup interface of this interface first. You can use
instructions as follows in interface configuration mode.
Command Purpose
backup interfaceslot/port
choose backup interface of this interface.