Allied Telesis AR400 Series Router - Manual (Page 91)

Physical and Layer 2 Interfaces 91
Software Release 2.6.1
C613-02021-00 REV D
and other call is cleared. The direction of precedence is not important, but
set precedence to IN at one end of the call and OUT at the other end of the
call.
The ISDN number is the exact sequence required to reach the remote router
from the local router, including STD access codes and area codes. The
number may contain only decimal digits. Hyphens and other characters
will result in an error.
Check that the ISDN calls are successfully added with the command:
SHOW ISDN CALL
5. Create PPP interfaces.
Create PPP interfaces to use the ISDN calls. PPP provides the link layer
protocol and enables multiple network and transport layer protocols such
as IP and Novell® IPX to be carried over the same ISDN link.
For example, on the Head Office router create PPP interface 0 to use the
ISDN call ROHO by entering the command:
CREATE PPP=0 OVER=ISDN-ROHO
On the Remote Office router, create PPP interface 0 to use the ISDN call
ROHO by entering the command:
CREATE PPP=0 OVER=ISDN-ROHO
Check the configuration with the commands:
SHOW ISDN CALL
SHOW PPP
The call ROHO should appear in the output of the SHOW ISDN CALL
command. The output of the SHOW PPP command should show interface
ppp0 over ISDN-ROHO.
ISDN is now ready for use by routing protocols such as IP and IPX.
Configuring ISDN Dial on Demand
A PPP interface that uses an ISDN call as its physical interface can be
configured for dial-on-demand operation. The ISDN call is activated only
when data is transmitted, and is disconnected when the link is idle for a period
of time.
To configure ISDN dial-on-demand follow these steps
The following steps are required:
1. Configure BRI or PRI ISDN.
2. Create PPP interfaces.
1. Configure BRI or PRI ISDN.
Complete steps 1 to 5 of “Configuring Basic Rate ISDN” on page 86, or steps
1 to 4 of “Configuring Primary Rate ISDN” on page 89.