Authentication - Cisco ROUTER-SDM-CD User Manual

Chapter 5 Configuring WAN Connections
Table 5-7 Serial Connection with HDLC or Frame Relay Fields
Element
IP Unnumbered
Dynamic DNS

Authentication

OL-4015-12
Description
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.
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.
This page is displayed if you enabled or are configuring:
PPP for a serial connection
•
PPPoE or PPPoA
•
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.
Cisco Router and Security Device Manager 2.5 User's Guide
encapsulation for an ATM connection
Configuring a Serial Connection
5-9