Approved Psus And Fom; Leds On The Psu And Fom; Ipv6 Accelerator Card; How The Card Works - Allied Telesis AT-8900 Hardware Reference Manual

34
Approved PSUs
and FOM
LEDs on the
PSU and FOM

How the card works

Verifying installation

Product numbers for the power supply unit (PSU) and the fan-only module
(FOM) that can be fitted in the AT-8900 and AT-9900 switches are:
AT-PWR01(either AC or DC power supply unit)
■
AT-PWR02 (AC power supply unit only)
■
AT-FAN01 (fan-only module)
■
For the AT-9900s Series switch only, you can install the AT-PWR01 and
AT-FAN01 models.
The following table describes how LEDs on power supply units and fan-only
modules report faults and operational activities.
LED State
Fault Red
PWR Green

IPv6 Accelerator Card

An optional AT-ACC01 network processor accelerator card accelerates IPv6
unicast and multicast routing in hardware on AT-8900 and AT-9924T/4SP
switches. For full functionality, 512MB SDRAM must be installed in the switch.
When the switch receives an IPv6 packet to route, the packet is sent to the
network processor accelerator card. The card processes the packet and sends it
out the correct port with appropriate alterations to the packet. Other IPv6
functions are passed to software, such as routing protocol control packets,
encryption, authentication, and Hop-by-Hop headers.
No configuration is necessary for the accelerator card to function; the card is
enabled at installation. If you disable the card (using software), the switch
handles IPv6 routing in the software.
Use the hardware filter and QoS commands to enable Quality of Service (QoS)
functionality on the accelerator card. For information about QoS functionality
and hardware filters, see the Quality of Service and Switching chapters in the
Software Reference.
Warning Only authorised service personnel should install a network processor
accelerator card. Opening the switch's lid may cause personal injury from
electric shock, could damage the switch, and will invalidate the product
warranty.
To confirm that the network processor accelerator card is installed and
operating correctly, check that the switch has recognised it. Turn on the switch
and enter the show system command to display system information. The
AT-8900, AT-9900, AT-9900s Series Switches
Description
There is either a fan failure, or the temperature has exceeded
º
the limit of 75ºC (167 F).
A PSU is installed in the switch and is receiving power. The
FOM does not have this LED.
Software Release 3.0.2
C613-03092-00 REV C