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M120 Flexible PIC Concentrators (FPCs) Overview
FPC Description
Copyright © 2010, Juniper Networks, Inc.
Signal path—The midplane provides the signal path to the FPCs, FEBs, Routing Engines,
CB, and other system components for monitoring and control of the system.
Figure 4: M120 Midplane
For chassis serial number information , see "Displaying M120 Router Components and
Serial Numbers" on page 257.
M120 Router Description on page 3
M120 Router Chassis Description on page 6
FPC Description on page 9
FPC Components on page 11
FPC Terminology on page 11
The Flexible PIC Concentrators (FPCs) provide the infrastructure to power and control
PICs and to translate packets to and from each PIC into a standard interface that the
FEB processes.
Each Packet Forwarding Engine receives incoming packets from the PICs installed on
the FPC and forwards them through the switch planes to the appropriate destination
FPC and port. Each FPC contains data memory, which is managed by the Queuing and
Memory Interface ASICs, and either one or two Packet Forwarding Engines.
Chapter 2: M120 Hardware Components
9
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Troubleshooting
