Specifications
Table Of Contents
- AT-8900 Series Hardware Reference
- Contents
- Models Covered By This Reference
- Why You Should Read This Reference
- Where To Find More Information
- Hardware Description
- Online Documentation
- AT-TFTP Server
- Using Windows Terminal and Windows Hyperterminal
- Switch Start-up
- RS-232 Terminal Port (ASYN0)
- Useful Cables
- Test Facility
- Power Supply Units (PSUs)
- Port, Connector, and Cable Combinations
- Troubleshooting
- Expansion Options
- Restricted Procedures
- Contacting Us
28 AT-8900 Series Switch
C613-03075-00 REV A
Fault LED is on
This can indicate:
■ There is a problem with the switch.
■ The switch or management software is malfunctioning.
■ A hardware fault is preventing switch start-up.
Perform the following steps in sequence:
1. Check “LEDs and What They Mean” on page 24 for descriptions and
explanations of LED flashing sequences.
2. Reset the switch by pressing the recessed RESET button on the front panel.
3. If you were attempting to download software or manage the switch via the
RS-232 Terminal Port, check that connections between the Terminal Port
and local terminal or PC are secure.
If you cannot access the switch’s software because of a faulty RS-232
Terminal Port connection, you can still manage the switch via Telnet or
SNMP until the problem is fixed.
4. Download the latest software release. See the AT-8900 Series Software
Reference for more information on how to obtain the latest software release.
Expansion Options
This section provides an overview of the expansion options for AT-8900 Series
Switches. The following expansion options were available when this Reference
was written. See your Authorised Allied Telesyn distributer or reseller, or visit
http:// www.alliedtelesyn.co.nz/support/at8900
to see if any new options are
available.
SFP transceivers
AT-8900 Series switches have 4 1000BASE-X small form-factor pluggable (SFP)
uplink sockets on their front panel. SFP transceivers allow users to interchange
port types to meet changing network requirements. SFP transceivers are hot
swappable, fixed at full-duplex and fixed at a speed of 1Gbps. SFP transceivers
can be purchased when a switch is purchased, or can be ordered separately as
needed.
A range of SFP transceivers have been tested and approved for use with the AT-8900
Series Switches. Contact your authorised Allied Telesyn distributor or reseller for more
information.
The following SFP transceivers have been approved for use with AT-8900
Series switches:
■ AT-MG8T 100m Base-T SFP
■ AT-MG8SX 300m SX SFP
■ AT-MG8ZX 70km ZX SFP
For the latest list of approved SFP transceivers, visit
http:// www.alliedtelesyn.co.nz/support/at8900
.