DIGITAL GIGAswitch/Router User Reference Manual
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Chapter 22
WAN
Configuration
Guide
This chapter provides an overview of Wide Area Network (WAN) applications as well as
an overview of both Frame Relay and PPP configuration for the GSR. In addition, you can
view an example of a multi-router WAN configuration complete with diagram and
configuration files in
“WAN Configuration Examples” on page 313
.
WAN Overview
On the DIGITAL GIGAswitch/Router, Wide Area Network (WAN) routing is performed
over a serial interface using two basic protocols: Frame Relay and point-to-point protocol
(PPP). Both protocols have their own set of configuration and monitoring CLI commands
described in the
DIGITAL GIGAswitch/Router Command Line Interface Reference Manual
.
High-Speed Serial Interface (HSSI) and Standard Serial Interfaces
In both the Frame Relay and PPP environments on the GSR, you can specify ports to be
High-Speed Serial Interface (HSSI) or standard serial interface ports, depending, of
course, on the type of hardware you have. Each type of interface plays a part in the
nomenclature of port identification. You must use either the “hs.” or “se.” prefix for HSSI
and serial interfaces, respectively, when specifying WAN port identities.
