Chapter 6 Configuring Backup Data Lines and Remote Management

Configuring Cellular Dial-on-Demand Routing Backup

Configuring DDR Backup Using Floating Static Route

To configure a floating static default route on the secondary interface, use the following commands, beginning in the global configuration mode.

Note Make sure you have ip classless enabled on your router.

SUMMARY STEPS

1.configure terminal

2.ip route network-numbernetwork-mask{ip address interface} [administrative distance] [name name]

DETAILED STEPS

 

Command or Action

Purpose

 

 

 

Step 1

configure terminal

Enters global configuration mode from the terminal.

 

Example:

 

 

Router# configure terminal

 

 

 

 

Step 2

ip route network-number network-mask

Establishes a floating static route with the

 

{ip-address interface} [administrative distance]

configured administrative distance through the

 

[name name]

specified interface.

 

 

 

Example:

A higher administrative distance should be

 

configured for the route through the backup

 

Router (config)# ip route 0.0.0.0 Dialer 2 track 234

 

interface, so that the backup interface is used only

 

 

 

 

when the primary interface is down.

 

 

 

Cellular Wireless Modem as Backup with NAT and IPsec Configuration

The following example shows how to configure the 3G wireless modem as backup with NAT and IPsec on either GSM or CDMA networks.

 

Note

The receive and transmit speeds cannot be configured. The actual throughput depends on the cellular

 

 

network service.

 

 

 

 

 

Current configuration : 3433 bytes

 

 

!

 

 

 

 

 

version 12.4

 

 

no service pad

 

 

service timestamps debug datetime msec

 

 

service timestamps log datetime msec

 

 

no service password-encryption

 

 

!

 

 

 

 

 

hostname Router

 

 

!

 

 

 

 

 

boot-start-marker

 

 

boot-end-marker

 

 

Cisco 819 Series Integrated Services Routers Software Configuration Guide

 

 

 

 

 

 

 

 

 

 

 

 

OL-23590-02

 

 

6-5

 

 

 

 

 

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Cisco Systems C819HG4GVK9, C819GUK9 manual Configuring DDR Backup Using Floating Static Route