Troubleshooting - Allied Telesis AT-AR020 PRI E1/T1 Hardware Reference Manual

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Troubleshooting

This section provides information on how to detect and resolve problems with PICs.
Performing the following tasks will eliminate the most common faults.
1. Check that the PIC is correctly installed. See the Port Interface Card
Installation and Safety Guide for a step by step guide to installing PICs.
2. Make sure the power cord is securely connected to the switch or router.
3. Check that the power supply voltage to the switch or router is stable.
4. Check that the correct data cables are being used and that their connections
are secure.
5. Make sure that other network devices are working properly.
6. Use the show install command to check that the latest software release is
loaded. The AlliedWare
or router has more information about obtaining and installing the latest
software release. In particular, the AT-AR021 V3 hardware revision requires
a switch or router running Software Version 2.9.1-13 or later.
7. If the switch is malfunctioning, reboot it by pressing the recessed Reset
button or entering the command restart reboot. Alternatively, power off
and on the switch by disconnecting and reconnecting the main power
supply and, if connected, the RPS power.
Other sources of troubleshooting information are:
■
"Test Facility" on page 43
■
The Installation and Safety Guide or Quick Install Guide for your switch or
router, which can be downloaded from
www.alliedtelesis.com/support/software.
■
The Hardware Reference for your switch or router, which can be
downloaded from www.alliedtelesis.com/support/software.
■
www.alliedtelesis.com
®
Operating System Software Reference for your switch
Port Interface Card
C613-03023-00 REV N