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Hardware Reference 15
C613-03022-00 REV K
DS3 Interface Cables
Use 75Ω RG59 coaxial cables with BNC connectors. Two cables are required,
one for transmit and one for receive. Neither cable should exceed 135m
(455feet) in length.
Testing an AT-AR048 NSM
The Test Facility is built into the AlliedWare operating system, and is the best
method to verify the correct operation of the DS3 interface on the AT-AR048
NSM. Testing can be performed while the switch or router is operational, but
any interfaces being tested are dedicated to the Test Facility. For more
information about the Test Facility, see the Test Facility chapter of the
AlliedWare
®
Operating System Software Reference.
To test an AT-AR048 DS3 interface, connect a 75Ω RG59 cable between the
transmit and receive BNC connectors, and enter the command:
enable test interface=ds3n
where n is the interface number.
Alternatively, enter the command:
enable test interface=expansion
Tests run for 4 minutes. Test status and results can be viewed at any time, using
the command:
show test
which produces a display like that shown in Figure 10.
Figure 10: Example output from the show test interface command for a DS3 interface
A more detailed output (with frame counts) can be displayed with the
command:
show test interface counter
which produces a display like that shown in Figure 11 on page 16.
For more information on the meanings of the output, see the see the Test Fa cility
chapter of the AlliedWare
®
Operating System Software Reference. If you are unsure
about running the Test Facility, have difficulty evaluating the results, or if a test
fails, contact your authorised Allied Telesis distributor or reseller.
Board ID Bay Board Name Host Id Rev Serial number
-------------------------------------------------------------------------------
Base 114 AT-RP24i Rapier 24i M2-0 41376726
NSM DS3 187 AT-AR048 NSM DS3 M1-1 49986061
Duration Details
Interface State Result Type (minutes) Data( %OK ) Control
-----------------------------------------------------------------------------
DS30 complete good - 4 good(100.0) -
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