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To add a dial circuit, enter the add device dial-circuit command at the Config>
prompt. The software assigns an interface number to each circuit. You will use this
number to configure the dial circuit. For example:
Config>add device dial-circuit
Enter the number of PPP Dial Circuit interfaces [1]?
Adding device as interface 6
Base net for the circuits(s) [0]?
The number of dial circuits that can be configured depends on the total number of
parameters to be configured and the size of the resulting configuration file.
Note: Dial circuits default to point-to-point (PPP) protocol. To change the dial circuit
protocol to Frame Relay, enter the set data-link fr command at the Config>
prompt. To change the dial circuit protocol to X.25, enter the set data x25
command at the Config> prompt. Other data-link types (SDLC and SRLY)
are not supported over ISDN.
Configuring Dial Circuits
This section describes how to configure a dial circuit.
1. Display the Circuit Config> prompt by entering the network command
followed by the interface number of the dial circuit. You can enter the list
devices command at the Config> prompt to display a list of the interface
numbers configured on the router. For example:
Config> network 6
Circuit configuration
Circuit Config>
2. Map the dial circuit to an ISDN interface. Use the set net command. The Base
net is the ISDN interface number. (This is needed only if you are changing the
base net.)For example:
Circuit Config> set net
Base net for this circuit [0]? 3
Note: If the dial circuit data link type is X.25 or the base net switch variant is
I.43x or channelized, the following steps (3-11 on page 624 ) do not
apply.
3. Specify the address name of the remote router to which the dial circuit will
connect. You must use one of the names you defined using the add
isdn-address command. For example:
Circuit Config> set destination
Assign destination address name []? baltimore
4. Configure the dial circuit to initiate outbound calls only, accept inbound calls
only, or to both initiate and accept calls.
Use the set calls command. For example:
Circuit Config> set calls outbound
Circuit Config> set calls inbound
Circuit Config> set calls both
Note: For WAN-Restoral operations or dial-on-demand applications, you
should set up the circuit for either inbound or outbound calls.
5. Specify the timeout period for the circuit.
Use the set idle command. If there is no traffic over the circuit for this
specified time period, the dial circuit hangs up. To configure the circuit as a
dedicated circuit, set the idle timer to zero. To configure the circuit to dial on
demand, set the idle timer to a value other than zero. The range is 0 to 65535
and the default is 60 seconds. For example:
Using ISDN
Chapter 45. Using the ISDN Interface 623
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