Cisco Systems 520 series manual Configure the Dialer Interface

Chapter 3 Configuring PPP over Ethernet with NAT

Configure the Dialer Interface

	Command	Purpose
Step 3
	no shutdown	Enables the Fast Ethernet interface and the
		configuration changes just made to it.
	Example:
	Router(config-if)# no shutdown
	Router(config-if)#
Step 4
	exit	Exits configuration mode for the Fast Ethernet
		interface and returns to global configuration
	Example:	mode.
	Router(config-if)# exit
	Router(config)#

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. The dialer interface is also used for cloning virtual access. Multiple PPPoE client sessions can be configured on a Fast Ethernet interface, but each session must use a separate dialer interface and a separate dialer pool.

Complete the following steps to configure a dialer interface for one of the Fast Ethernet LAN interfaces on the router, starting in global configuration mode:

	Command	Purpose
Step 1
	interface dialer dialer-rotary-group-number	Creates a dialer interface (numbered 0 to 255), and
		enters interface configuration mode.
	Example:
	Router(config)# interface dialer 0
	Router(config-if)#
Step 2
	ip address negotiated	Specifies that the IP address for the interface is
		obtained through PPP/IPCP (IP Control Protocol)
	Example:	address negotiation.
	Router(config-if)#ip address negotiated
	Router(config-if)#
Step 3
	ip mtu bytes	Sets the size of the IP maximum transmission unit
		(MTU). The default minimum is 128 bytes. The
	Example:	maximum for Ethernet is 1492 bytes.
	Router(config-if)# ip mtu 1492
	Router(config-if)#
Step 4
	encapsulation encapsulation-type	Sets the encapsulation type to PPP for the data
		packets being transmitted and received.
	Example:
	Router(config-if)# encapsulation ppp
	Router(config-if)#

Cisco Secure Router 520 Series Software Configuration Guide

3-4 OL-14210-01