Enterasys Networks Security Router X-PeditionTM - Manual (Page 239)

Overview of Dial on Demand/Bandwidth on Demand
XSR User’s Guide 10-17
XSR(config-if)#encapsulation ppp
XSR(config-if)#dialer pool 5
XSR(config-if)#no shutdown
Configure backup serial port for dial purposes to belong to dial pool 5:
XSR(config)#interface serial 1/0
XSR(config-if)#dialer pool-member 5
XSR(config-if)#no shutdown
Configure primary serial port to use dialer 1 as its backup interface:
XSR(config)#interface serial 1/1
XSR(config-if)#backup interface dialer1
XSR(config-if)#backup delay 110
XSR(config-if)#no shutdown
Configure primary serial port to use dialer 2 as its backup interface:
XSR(config)#interface serial 1/2
XSR(config-if)#backup interface dialer2
XSR(config-if)#backup delay 1 10
XSR(config-if)#no shutdown
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, they 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.