5-10
Cisco AS5350 and Cisco AS5400 Universal Gateway Software Configuration Guide
OL-3418-02 B0
Chapter5 Managing and Troubleshooting the UniversalPort Card
Troubleshooting
You may additionally configure the following options:
• port modem autotest minimum ports—Define the minimum number of free ports available for
autotest to begin.
• port modem autotest time hh:mm interval—Enable autotesting time and interval.
• port modem autotest error threshold—Define the maximum number of errors detected for autotest
to begin.
A sample diagnostic autotest setting the time at 12:45 and at 8 hour intervals looks like the following:
AS5400(config)# port modem autotest time 12:45 8
AS5400(config)#
SPE Back-to-Back Test
When an SPE port is tested as Bad, you may perform additional testing by conducting a series of internal
back-to-back connections and data transfers between two SPE ports. All port test connections occur
inside the gateway. For example, if mobile users cannot dial into port 2/5 (the sixth port on the universal
port card in the second chassis slot), attempt a back-to-back test with port 2/5 and a known-functioning
port such as port 2/6.
Enter the following command in privileged EXEC mode (the prompt is displayed as
AS5350# or
AS5400#
) to perform internal back-to-back port tests between two ports:
test port modem back-to-back slot/port slot/port [num-packets]—Perform internal back-to-back
port tests between two ports, sending test packets of the specified size.
You might need to enable this command on several different combinations of ports to determine which
one is not functioning properly. A pair of operable ports successfully connect and complete transmitting
data in both directions. An operable port and an inoperable port do not successfully connect with each
other.
A sample back-to-back test might look like the following:
AS5400# test port modem back-to-back 2/10 3/20
Repetitions (of 10-byte packets) [1]:
*Mar 02 12:13:51.743:%PM_MODEM_MAINT-5-B2BCONNECT:Modems (2/10) and (3/20) connected in
back-to-back test:CONNECT33600/V34/LAP
*Mar 02 12:13:52.783:%PM_MODEM_MAINT-5-B2BMODEMS:Modems (3/20) and (2/10) completed
back-to-back test:success/packets = 2/2
A port that has been confirmed to have problems can often be fixed using the clear spe command. For
more information, see the “Clear an SPE” section on page 5-12.
The results of the test port modem back-to-back command are displayed in the show port modem test
command's output:
AS5400# show port modem test
Date Time Modem Test Reason State Result
3/02 12:00:57 PM 2/01 Back-To-Back :STARTUP TEST Idle PASS
3/02 12:00:57 PM 2/00 Back-To-Back :STARTUP TEST Idle PASS
3/02 12:00:58 PM 2/02 Back-To-Back :STARTUP TEST Idle PASS
3/02 12:00:58 PM 2/03 Back-To-Back :STARTUP TEST Idle PASS
3/02 12:00:58 PM 2/04 Back-To-Back :STARTUP TEST Idle PASS
3/02 12:00:58 PM 2/05 Back-To-Back :STARTUP TEST Idle PASS
...
3/02 12:01:14 PM 3/95 Back-To-Back :STARTUP TEST Idle PASS
3/02 12:01:14 PM 3/94 Back-To-Back :STARTUP TEST Idle PASS
3/02 12:01:15 PM 3/75 Back-To-Back :STARTUP TEST Idle PASS
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