Chapter 10: Configuring Dialer Services; Overview Of Dial Services; Dial Services Features - Enterasys Security Router X-PeditionTM User Manual

This chapter details information about the XSR's suite of dialer functionality:
• Dial
• Ethernet Failover
• Backup Dialer
• Dial on Demand (DoD)
• Bandwidth on Demand (BoD)
• Multilink PPP (MLPPP)
• Dialer Interface Spoofing
• Dialer Watch

Overview of Dial Services

Dial Services provide network connections across the Public Switched Telephone Network
(PSTN). Networks are typically interconnected using dedicated lines for Wide-Area Network
(WAN) connections. Dial Services can use modems, Integrated Service Data Network (ISDN)
terminal adapters (TAs), or integrated ISDN capabilities to establish low-volume, periodic
network connections over public circuit-switched networks.
Dial Services are a cost-saving alternative to a leased line connection between two peers and they
can be implemented for different types of media for both inbound and outbound connections.

Dial Services Features

The XSR supports the following dialer features:
• Asynchronous serial service through an external modem
• Synchronous serial
• Addressing using numbered or unnumbered interfaces
• Outbound connections
• Time of day feature
• PPP encapsulation
• CHAP, MS-CHAP and PAP authentication and security
• Callback
Configuring Dialer Services
10
XSR User's Guide 10-1