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2Modem/DSU Commands
2-76800-A2-GB31-20 January 1997
Automatic Network Test (ant)
(Disruptive)
Use the ant command to test the primary data channel between a DATAPHONE II or
COMSPHERE modem or DATAPHONE II DSU and each of its tributary devices.
The control device tests the primary data channel by sending a test message to each tributary on its
poll list. The tributary checks the received message for errors. If the message received by the
tributary is corrupted an indication of the errors is sent back to the control device. In addition to the
error count, the tributary sends another test message back to the control device. Each tributary is
tested 50 times.
The control device checks the message sent by the tributary for errors, and also logs the errors
found by the tributary in the received message. If more than two corrupt messages are received
from the tributary, the tributary fails the test. The execution of the Automatic Network Test on
DATAPHONE II control devices causes all tests currently being run on all tributary devices to be
aborted. On COMSPHERE point-to-point modems, this test can be directed to a specific port;
therefore, activity on ports other than the one specified is not disrupted by the test.
For most commands, NMS enables you to specify the destination for the command’s results and
schedule its execution. If the last page of the input form cannot accommodate the Destination for
results and Schedule execution fields, an additional page is provided. For a complete description
of these fields, refer to Chapter 1, Introduction.
Access Level: Data Technician, Manager, Systems Administrator
Abbreviation: ant
Alternate: auto
Restrictions: This test cannot be run if all tributaries are in the Disabled mode. Enable at
least one tributary by using the de command.
Routine: Yes
Schedule: Yes
Related Commands: None
Automatic Network Test Input Form
This input form contains the following fields:
Device(s) (Required field)
Enter the control device(s) to which the test will be sent. One or more control devices
may be specified. Standard addressing format applies to the input. For information on
device addressing, refer to Appendix D of the COMSPHERE 6800 Series Network
Management System User’s/System Administrator’s Guide.
Port number (Required field)
Enter the port number to which the test is to be directed.
For 3400/4400 Series modems, valid entries are from 1 (default) through 4.
For DATAPHONE II devices, the only valid entry is 1 (default).