User`s guide
XSR User’s Guide 157
Chapter 8 Overview of Dial on Demand/Bandwidth on Demand
Configuring Dialer Services
Overview of Dial on Demand/Bandwidth on Demand
The XSR’s Dial on Demand/Bandwidth on Demand applications provide
high-speed, available-when-needed dial services over point-to-point or
multipoint PPP ISDN connections. Different network topologies can be
configured for different applications - mainly under Dialer Interface
configuration mode - including the following:
Dial on Demand
– PPP Point to Multipoint
– PPP Multi to Multipoint
– MLPPP Point to Multipoint
– MLPPP Multi to Multipoint
– Incoming Call Mapping
Switched PPP Multilink
– Bandwidth on Demand
Backup
– Backup using ISDN
– Backup with MLPPP
The caveats below apply to the XSR’s support of switched multilink
connections:
They use the dialer and are set up in Dialer interface mode and must
include an ISDN interface or associated modem.
Configuring switched connections on a Serial line is unnecessary, the
process is performed automatically.
Leased-line connections are supported and must be configured in
Multilink interface mode.
Support on FastEthernet/GigabitEthernet ports is not available.
For more information on ISDN fundamentals, refer “Configuring Integrated
Services Digital Network (ISDN)” on page 187 and the XSR CLI Reference
Guide.
NOTE
Optional commands shown in sample configurations are preceded by an
exclamation point.