Cisco 520-T1 - Small Business Pro SR Secure Router Software Configuration Manual page 49

Chapter 4 Configuring PPP over ATM with NAT
Perform these steps to configure a dialer interface for the ATM interface on the router, starting in global
configuration mode:
Command
Step 1 interface dialer dialer-rotary-group-number
Example:
Router(config)# interface dialer 0
Router(config-if)#
Step 2 ip address negotiated
Example:
Router(config-if)# ip address negotiated
Router(config-if)#
Step 3
ip mtu bytes
Example:
Router(config-if)# ip mtu 1492
Router(config-if)#
Step 4 encapsulation encapsulation-type
Example:
Router(config-if)# encapsulation ppp
Router(config-if)#
Step 5 ppp authentication {protocol1 [protocol2...]}
Example:
Router(config-if)# ppp authentication chap
Router(config-if)#
Step 6 dialer pool number
Example:
Router(config-if)# dialer pool 1
Router(config-if)#
Step 7 dialer-group group-number
Example:
Router(config-if)# dialer-group 1
Router(config-if)#
OL-14210-01
Purpose
Creates a dialer interface (numbered 0–255), and
enters into interface configuration mode.
Specifies that the IP address for the dialer
interface is obtained through PPP/IPCP (IP
Control Protocol) address negotiation.
Sets the size of the IP maximum transmission unit
(MTU). The default minimum is 128 bytes. The
maximum for ATM is 1492 bytes.
Sets the encapsulation type to PPP for the data
packets being transmitted and received.
Sets the PPP authentication method.
The example applies the Challenge Handshake
Authentication Protocol (CHAP).
For details about this command and additional
parameters that can be set, see the Cisco IOS
Security Command Reference.
Specifies the dialer pool to use to connect to a
specific destination subnetwork.
Assigns the dialer interface to a dialer group
(1–10).
Using a dialer group controls access to
Tip
your router.
Cisco Secure Router 520 Series Software Configuration Guide
Configure the Dialer Interface
4-3