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Displaying Information about NFAS Configurations
Use the show Line0 command to display NFAS settings on an interface. For example, to
display NFAS settings on a line board in slot 3, enter the following commands:
Command> set view 3
Command 3> show line3
Use the show nfas command to display a list of the members, called "neighbors," in an
NFAS group. You must connect to a slot configured for NFAS to use this command. For
example, to list the members of an NFAS group of which slot 2 is a member, enter the
following commands:
Command 3> set view 2
Command 2> show nfas
Enter the following command to display the last 40 significant messages exchanged
between a PortMaster and its neighbors:
Command> show nfas history
Troubleshooting NFAS
Use the set debug nfas command to diagnose problems or errors during testing. For
example, to receive debug information from the line board in slot 3, enter the following
commands:
Command 2> set console
Command 2> set view 3
Command 3> set debug nfas on
Refer to the PortMaster Command Line Reference for more information about NFAS
commands.
Example NFAS Configurations
This section provides sample configurations to illustrate basic NFAS configuration for
standard NFAS and NFAS without D channel backup.
NFAS with D Channel Backup
The convention, when configuring NFAS, is to set interface 0 as the primary D channel.
In this example, Line0 in slot 0 is set as the primary D channel for group 5, Line1 in
slot 1 is the backup D channel, and all other interfaces are set as slave interfaces.
Command> set view 0
Command 0> set line0 nfas primary 0 5
Command 0> set line1 nfas slave 1 5
Command 0> set line2 nfas slave 2 5
Command 0> set line3 nfas slave 3 5
Command 0> save all
Command 0> reset slot0
Configuring T1, E1, and ISDN PRI
Using NFAS for ISDN PRI
10-19
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Troubleshooting
