x900-12XT/S fixed AC PSU. Allied Telesis AT-X900-24XS, AT-FAN03, AT x900-48FS, AT-9924Ts, AT-8948

38 x900 Series Switch and SwitchBlade

®

x908

The following LEDs report operations and faults on the PWR05 PSU

The following table describes LEDs on the PWR05 AC power supply unit.

IN

LED

~

OUT

FAULT

State

Green

Off

Green

Off

Red

Off

Description

AC input voltage is within 90-264 VAC, 47-63Hz.

AC input voltage is outside the acceptable range.

DC output voltage is within 12V +/- 10%.

DC output voltage is outside the acceptable range, or the Standby switch is Off. If a fault occurs then the FAULT LED will display and the OUT LED will be Off.

A fault has occurred. There is either a fan failure, or the temperature has exceeded its limit of 70º C (158º F).

No fault conditions detected.

The following table describes LEDs on the PWR05 DC power supply units.

LED

IN

OUT

FAULT

State

Green

Off

Green

Off

Red

Off

Description

DC input voltage is within 40 VDC to 60 VDC.

DC input voltage is outside the acceptable range.

DC output voltage is within 12V +/- 10%.

DC output voltage is outside the acceptable range, or the Standby switch is Off. If a fault occurs then the FAULT LED will display and the OUT LED will be Off.

A fault has occurred. There is either a fan failure, or the temperature has exceeded its limit of 70º C (158º F).

No fault conditions detected.

x900-12XT/S fixed AC PSU

Key features are:

■ Universal 100–240 V AC 50/60 Hz input

■

■

Maximum continuous current draw: 2 A at 90 V, 0.8 A at 230 V at full-rated load

Maximum inrush surge current (cold start at 25º C/77º F): 33 A peak at

115 VAC

A single LED on the front panel of the switch reports operations and faults on the PSU. See

“System LEDs” on page 17 for more information.

IPv6 Accelerator Card

An optional AT-ACC01 network processor accelerator card accelerates IPv6 unicast and multicast routing in hardware on AT-8948 switches. For full functionality, 512 MBytes SDRAM must be installed in the switch.

How the card works

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.

C613-03092-00 REV J

Hardware Reference 39

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.

C613-03092-00 REV J