Cisco CISCO876-SEC-I-K9 Configuration Guide - Page 49
interface dialer, ip address negotiated, ip mtu, encapsulation, ppp authentication, dialer pool
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Chapter 4 Configuring PPP over ATM with NAT Configure the Dialer Interface Configure the Dialer Interface The dialer interface indicates how to handle traffic from the clients, including, for example, default routing information, the encapsulation protocol, and the dialer pool to use. It is also used for cloning virtual access. Multiple PPPoA client sessions can be configured on an ATM interface, but each session must use a separate dialer interface and a separate dialer pool. Perform these steps to configure a dialer interface for the ATM interface on the router, starting in global configuration mode. Step 1 Command interface dialer dialer-rotary-group-number Example: Router(config)# interface dialer 0 Router(config-if)# Purpose Creates a dialer interface (numbered 0-255), and enters into interface configuration mode. Step 2 ip address negotiated Example: Router(config-if)# ip address negotiated Router(config-if)# Specifies that the IP address for the dialer interface is obtained through PPP/IPCP (IP Control Protocol) address negotiation. Step 3 ip mtu bytes Example: Router(config-if)# ip mtu 4470 Router(config-if)# Sets the size of the IP maximum transmission unit (MTU). The default minimum is 128 bytes. The maximum for ATM is 4470 bytes. Step 4 encapsulation encapsulation-type Example: Router(config-if)# encapsulation ppp Router(config-if)# Sets the encapsulation type to PPP for the data packets being transmitted and received. Step 5 Step 6 ppp authentication {protocol1 [protocol2...]} Example: Router(config-if)# ppp authentication chap Router(config-if)# dialer pool number Example: Router(config-if)# dialer pool 1 Router(config-if)# 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. OL-5332-01 Cisco 850 Series and Cisco 870 Series Access Routers Software Configuration Guide 4-3