Juniper-networks MX480 Bedienungsanleitung Seite 52

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Switch fabric—Provides the switching functions for the DPCs, FPCs, and MPCs
Control field-programmable gate array (FPGA)—Provides the Peripheral Component
Interconnect (PCI) interface to the Routing Engine
1000Base-T Ethernet controller—Provides a 1-Gbps Ethernet link between the Routing
Engines
Ethernet switch—Provides 1-Gbps link speeds between the Routing Engine and the
DPCs, FPCs, and MPCs
Circuits for chassis management and control
Power circuits for the Routing Engine and SCB
LEDs—Provide status
Related
Documentation
MX480 Host Subsystem Description on page 26
MX480 Routing Engine Description on page 32
MX480 Switch Control Board (SCB) LEDs on page 28
MX480 Switch Control Board (SCB) LEDs
Three LEDs on the SCB indicate the status of the SCB. The LEDs, labeled FABRIC ACTIVE,
FABRIC ONLY, and OK/FAIL, are located directly on the SCB. Table 6 on page 28 describes
the functions of the SCB LEDs.
Table 6: SCB LEDs
DescriptionStateColorLabel
Fabric is in active mode.On steadilyGreenFABRIC
ACTIVE
SCB operates in fabric-only mode.On steadilyGreenFABRIC
ONLY
SCB operates in fabric/control board mode.Off
SCB is online.On steadilyGreenOK/FAIL
SCB has failed.On steadilyRed
SCB is offline.Off
Each SCB also has two LEDs on the craft interface that indicate its status. The SCB LEDs,
labeled 0 and 1, are located along the bottom of the craft interface. For more information
about the SCB LEDs on the craft interface, see “SCB LEDs on the MX480 Craft Interface”
on page 40.
Related
Documentation
MX480 Switch Control Board (SCB) Description on page 26
MX480 Host Subsystem Description on page 26
Copyright © 2013, Juniper Networks, Inc.28
MX480 3D Universal Edge Router Hardware Guide
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