Fpc components, Mx480 flexible pic concentrator (fpc) leds – Juniper Networks MX480 User Manual

Page 42

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Engines receive incoming packets from the PICs installed on the FPC and forwards them
through the switch planes to the appropriate destination port. The FPCs interface with
the power supplies and SCBs.

FPCs are hot-removable and hot-insertable, as described in

“MX480 Component

Redundancy” on page 4

. When you install an FPC into a functioning router, the Routing

Engine downloads the FPC software, the FPC runs its diagnostics, and the PICs, housed
on the FPC, are enabled. Forwarding continues uninterrupted during this process. When
you remove or install an FPC, packet forwarding between other DPCs or FPCs is not
affected.

FPC Components

Each FPC consists of the following components:

•

FPC card carrier, which includes two PIC slots

•

Up to two Packet Forwarding Engines, each consisting of one I-chip for Layer 3
processing and one Layer 2 network processor

•

Midplane connectors and power circuitry

•

Processor subsystem (PMB), which includes a 1.2-GHz CPU, system controller, 1 GB of
SDRAM, and two Gigabit Ethernet interfaces

•

Two LEDs, located on the craft interface above the FPC, that display the status of the
FPC and are labeled