Feb Components; Figure 22: M120 Feb - Juniper M120 Hardware Manual

M120 Multiservice Edge Router Hardware Guide

FEB Components

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Figure 22: M120 FEB

Each FEB consists of the following components:
I-chip ASIC, which provides multiple paths for PFE to PIC communication.
H2S—Bridge between HSLA and one SPI4 interface.
A crossbar switch that provides connection between the FEB WAN links and the FPC
WAN links.
Three LEDs located on the FEB faceplate that display the status of the FEB.
"M120 Forwarding Engine Boards (FEBs) LEDs" on page 77
the FEB LEDs.
Six LEDs located on the FEB faceplate indicate which FPC the FEB is connected to,
labeled through . The illuminated green LED corresponds to the FPC connected to
0 5
the FEB.
Midplane connectors and power circuitry.
Maximum 20-Gbps fabric interface.
Online/offline button.
Replacing an M120 FEB on page 255
Troubleshooting M120 FEBs on page 289
Maintaining the M120 FEBs on page 278
describes the functions of
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