Specifications

Configuring Backup Data Lines and Remote Management
Configuring Backup Interfaces
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Cisco 3900 Series, 2900 Series, and 1900 Series Integrated Services Routers Software Configuration Guide
Configuring DDR Backup Using Dialer Watch
To initiate dialer watch, you must configure the interface to perform dial-on-demand routing (DDR) and
backup. Use traditional DDR configuration commands, such as dialer map, for DDR capabilities. To
enable dialer watch on the backup interface and create a dialer list, use the following commands in
interface configuration mode.
SUMMARY STEPS
1. configure terminal
2. interface type number
3. dialer watch group group-number
4. dialer watch-list group-number ip ip-address address-mask
5. dialer-list dialer-group protocol protocol-name {permit | deny | list access-list-number |
access-group}
6. ip access-list access list number permit ip source address
7. interface cellular 0
8. dialer string string
DETAILED STEPS
Command or Action Purpose
Step 1
configure terminal
Example:
Router# configure terminal
Enters global configuration mode.
Step 2
interface type number
Example:
Router (config)# interface ATM 0
Specifies the interface.
Step 3
dialer watch-group group-number
Example:
Router(config-if)# dialer watch-group 2
Enables dialer watch on the backup interface.
Step 4
dialer watch-list group-number ip ip-address address-mask
Example:
Router(config-if)# dialer watch-list 2 ip 10.4.0.254
255.255.0.0
Defines a list of all IP addresses to be watched.
Step 5
dialer-list dialer-group protocol protocol-name {permit |
deny | list access-list-number | access-group}>
Example:
Router(config)# dialer-list 2 protocol ip permit
Creates a dialer list for traffic of interest and permits
access to an entire protocol.