Juniper-networks MX480 Manual do Utilizador Página 46

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Switch fabric interfaces to the chassis
XM ASIC chip, which owns and manages the packet data memory built from external
DDR3 memory chips, the fabric queuing system, a portion of the WAN queuing system,
and the host queuing system
LU ASIC chip, which performs all functions relating to header processing including input
processing, route lookup, classification, filtering, policing, accounting, encapsulation,
and statistics
Midplane connectors and power circuitry
Processor Mezzanine Board (PMB), which contains the host processor and supporting
peripherals.
LED on the AS MCC, which displays the status of the AS MLC
MX480 SCB, Power Supply, and Cooling System Requirements for AS MLC
Each MX480 router requires specific SCB, power supply, and cooling system models to
run the AS MLC:
SCB—Enhanced MX Switch Control Board (SCBE-MX). See “MX480 Enhanced Switch
Control Board Description” on page 29 for details
Power supply:
2520W AC power supply—Model PWR-MX480-2520-AC
2400W DC power supply—Model PWR-MX480-2400-DC
Power requirement for AS MLC:
AS MCC—191W
AS MXC—259W
AS MSC—50W
Cooling system—Required fan and fan tray models:
Fans:
For ACpower supply: PWR-FAN-MX480-AC-HC-Uand PWR-MX480-2520-AC-S
For DC power supply: PWR-FAN-MX480-DC-HC-U and PWR-MX480-2520-DC-S
Fan tray—FFANTRAY-MX480-HC
Related
Documentation
Replacing an MX480 AS MLC on page 214
Replacing an MX480 AS MSC on page 217
Replacing an MX480 AS MXC on page 220
Copyright © 2013, Juniper Networks, Inc.22
MX480 3D Universal Edge Router Hardware Guide
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