Cisco 3945 User Manual

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Cisco 3900 Series, Cisco 2900 Series, and Cisco 1900 Series Integrated Services Routers Generation 2 Software Configuration Guide
OL-20696-04
Chapter Configuring Backup Data Lines and Remote Management
Configuring Backup Interfaces
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.

Cisco 3945 Specifications

General

Brand	Cisco
Model	3945
Category	Network Router
Language	English