5-9
Cisco Router and Security Device Manager 2.5 User’s Guide
OL-4015-12
Chapter5 Configuring WAN Connections
Configuring a Serial Connection
Authentication
This page is displayed if you enabled or are configuring:
PPP for a serial connection
PPPoE or PPPoA encapsulation for an ATM connection
PPPoE or PPPoA encapsulation for an Ethernet connection
An ISDN BRI or analog modem connection
Your service provider or network administrator may use a Challenge Handshake
Authentication Protocol (CHAP) password or a Password Authentication Protocol
(PAP) password to secure the connection between the devices. This password
secures both incoming and outgoing access.
IP Unnumbered Choose IP Unnumbered if you want the interface to share an IP
address that has already been assigned to another interface. Then
choose the interface whose IP address you want to use for the
interface you are configuring.
Dynamic DNS Choose dynamic DNS if you want to update your DNS servers
automatically whenever the WAN interface IP address changes.
Click the Dynamic DNS button to configure dynamic DNS.
Table5-7 Serial Connection with HDLC or Frame Relay Fields
Element Description