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Cisco 819 Series Integrated Services Router Software Configuration Guide
OL-23590-02
Chapter 5 Basic Router Configuration
Configuring WAN Interfaces
Note When the cellular interface requires a static IP address, the address may be configured as ip address
negotiated. Through IP Control Protocol (IPCP), the network ensures that the correct static IP address
is allocated to the device. If a tunnel interface is configured with the ip address unnumbered <cellular
interface> command, the actual static IP address must be configured under the cellular interface, in place
of ip address negotiated. For a sample cellular interface configuration, see the
“Basic Cellular Interface
Configuration” section on page 5-20.
Configuring DDR
Perform these steps to configure dial-on-demand routing (DDR) for the cellular interface.
SUMMARY STEPS
1. configure terminal
2. interface cellular 0
3. dialer in-band
4. dialer idle-timeout seconds
5. dialer string string
6. dialer group number
7. exit
8. dialer-list dialer-group protocol protocol-name {permit | deny | list access-list-number |
access-group}
9. ip access-list <access list number> permit <ip source address>
10. line 3
11. script dialer <regexp>
12. exit
13. chat-script <script name> ”” “ATDT*99*<profile number>#” TIMEOUT <timeout value>
CONNECT
or
chat-script <script name> "" "ATDT*777*<profile number>#" TIMEOUT <timeout value>
CONNECT
14. interface cellular 0
15. dialer string <string>
Step 6
asynchronous mode interactive
Example:
Router (config-if)# asynchronous mode interactive
Returns a line from dedicated asynchronous network
mode to interactive mode, enabling the slip and ppp
commands in privileged EXEC mode.
Step 7
ip address negotiated
Example:
Router (config-if)# ip address negotiated
Specifies that the IP address for a particular
interface is obtained via PPP and IPCP address
negotiation.
Command or Action Purpose