
Configuring Dial Services
3-14
Static Routes
You need to configure the demand-circuit protocols so that they do not send
broadcast messages out to the network. Once you disable broadcast messages, the
router must determine the destination address using another means: static routes.
A static route specifies the transmission path that data must follow to another
network. This path is based on the destination address of the data. Protocols that
can use static routes include:
• AURP
• DECnet
• DLSw
•IP
• IPX
• XNS
Demand circuits require static routes if you disable the circuit’s routing update
protocols. To configure a static route, you need to specify in the protocol’s routing
table the address of the network to which you will be sending data. The address
must be unique to that circuit. For more information about static routes for each of
these protocols, refer to the appropriate protocol manual.
IP RIP Triggered Updates and Broadcast Timers
To prevent broadcast messages from keeping the demand circuit up, you can
configure Routing Information Protocol (RIP) triggered updates or broadcast
timers for IP transmission.
RIP triggered updates enable you to limit the number of update packet
transmissions. The router sends a triggered update only as a result of a particular
event; it does not send updates at regular intervals. Consequently, the number of
triggered updates is less frequent, which reduces the traffic across the circuit.
RIP broadcast timers allow you to configure how often update transmissions
occur. By configuring the frequency of broadcast transmissions, you can prevent
the demand circuit from remaining active unnecessarily.
For information about these RIP features, refer to Configuring IP Services.
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