Specifications
Contents
Models Covered By This Reference .................................................................... 3
Why You Should Read This Reference ............................................................... 3
Where To Find More Information ...................................................................... 4
Hardware Description ....................................................................................... 4
Switch Overview ......................................................................................... 4
AT-9900 Series Switch Models .................................................................... 7
Online Documentation ...................................................................................... 9
How to access the CD-ROM and online documentation .............................. 9
How to Use AT-TFTP Server .............................................................................. 10
How to Use Windows Terminal and Windows Hyperterminal .......................... 11
Switch Start-up ............................................................................................... 14
How to log in ........................................................................................... 14
How to access help .................................................................................. 15
Start-up procedures .................................................................................. 15
RS-232 Terminal Port (ASYN0) ......................................................................... 18
Useful Cables .................................................................................................. 19
RS-232 terminal and modem cables ......................................................... 19
Cables for RJ-45 Ethernet LAN interfaces .................................................. 20
Port, Connector, and Cable Combinations ...................................................... 22
LEDs and What They Mean ............................................................................. 23
AT-9900 Series port LEDs .......................................................................... 24
PSU and FOM LEDs ................................................................................... 25
Power Supply Units (PSUs) .............................................................................. 25
Approved PSUs and FOM ......................................................................... 26
Network Processor Accelerator Card ............................................................... 26
What is an accelerator card? .................................................................... 26
Approved network processor accelerator card .......................................... 26
How an accelerator card works ................................................................ 26
How to check if an accelerator card is installed correctly ........................... 27
How to display information about the accelerator card ............................. 28
Small Form Factor Pluggable (SFP) Transceivers ................................................ 29
Approved SFP transceivers ........................................................................ 29
SFP port operation .................................................................................... 29
SFP port and RJ-45 port operation ............................................................ 30
How to install and remove a SFP transceiver ............................................. 30
CompactFlash ................................................................................................. 31
Approved CompactFlash cards .................................................................. 31
How to install and remove a CompactFlash card ....................................... 31
How to test a CompactFlash card ............................................................. 32
Dual In-line Memory Modules (DIMMs) ........................................................... 33
Approved DIMM for the AT-9924T and AT-9924SP switches ..................... 33
Approved DIMM for the AT9924T/4SP switch ........................................... 34
How to check if DIMM is installed correctly .............................................. 34
Lithium Battery ............................................................................................... 34
Optional Wall-mount Kit ................................................................................. 35
How to install a switch using the wall-mount kit ....................................... 35
Virtual Cable Test ............................................................................................ 36
How to use the Virtual Cable Test ............................................................. 36
Display Approximate Cable Length .................................................................. 39
Test Facility ..................................................................................................... 39
How to test Ethernet LAN ports ................................................................ 39
Other interface tests ................................................................................. 40
Diagnostics ..................................................................................................... 40
Troubleshooting .............................................................................................. 42
Check these first ...................................................................................... 42
Link/Activity LED on any port is off ........................................................... 42