Specifications
Table Of Contents
- Contents
- Preface
- Getting Started
- Basic Router Configuration
- Interface Port Labels
- Viewing the Default Configuration
- Information Needed for Configuration
- Configuring Basic Parameters
- Configuring Static Routes
- Configuring Dynamic Routes
- Configuring Enhanced IGRP
- Basic Router Configuration
- Configuring Your Router for Ethernet and DSL Access
- Sample Network Deployments
- Configuring PPP over Ethernet with NAT
- Configuring PPP over ATM with NAT
- Configuring a LAN with DHCP and VLANs
- Configuring a VPN Using Easy VPN and an IPSec Tunnel
- Configure the IKE Policy
- Configure Group Policy Information
- Apply Mode Configuration to the Crypto Map
- Enable Policy Lookup
- Configure IPSec Transforms and Protocols
- Configure the IPSec Crypto Method and Parameters
- Apply the Crypto Map to the Physical Interface
- Create an Easy VPN Remote Configuration
- Verifying Your Easy VPN Configuration
- Configuration Example
- Configuring VPNs Using an IPSec Tunnel and Generic Routing Encapsulation
- Configuring a Simple Firewall
- Configuring a Wireless LAN Connection
- Sample Configuration
- Configuring Additional Features and Troubleshooting
- Additional Configuration Options
- Configuring Security Features
- Configuring Dial Backup and Remote Management
- Troubleshooting
- Reference Information
- Cisco IOS Software Basic Skills
- Concepts
- ROM Monitor
- Common Port Assignments
CHAPTER
13-1
Cisco 1800 Series Integrated Services Routers (Fixed) Software Configuration Guide
OL-6426-02
13
Configuring Dial Backup and Remote
Management
The Cisco 1800 integrated services fixed-configuration routers support dial-in (for remote management)
and dial-out (for dial backup) capabilities. By allowing you to configure a backup modem line
connection, the Cisco
1800 integrated services fixed-configuration routers provide protection against
WAN downtime. Dial backup is inactive by default, and must be configured to be active.
Dial backup and remote management functions are configured through the ISDN S/T port of the
Cisco
1812, Cisco 1801, Cisco 1802, and Cisco 1803 routers. These functions are configured through
the V.92 modem port of the Cisco
1811 router.
This chapter contains the following topics:
• Dial Backup Feature Activation Methods
• Dial Backup Feature Limitations
• Configuring Dial Backup and Remote Management Through the ISDN S/T Port
• Configuring Dial Backup and Remote Management Through a V.92 Modem
Dial Backup Feature Activation Methods
Three methods are available to activate the dial backup feature:
• Backup Interfaces
• Floating Static Routes
• Dialer Watch
Backup Interfaces
When the router receives an indication that the primary line is down, a backup interface is brought up.
You can configure the backup interface to go down once the primary connection has been restored for a
specified period.
This is accomplished using dial-on-demand routing (DDR). When this is configured, a backup call is
triggered by specified traffic.