The midplane performs the following functions:
•
Transfer of packets—An incoming data packet crosses the midplane to a CFEB or
CFEB-E. The CFEB or CFEB-E performs switching and forwarding functions and transfers
outgoing packets back across the midplane to the FIC or PICs for transmission to the
network.
•
Power distribution—The midplane distributes power to all router components from
the power supplies attached to it.
•
Signal connectivity—The midplane transports the signals exchanged by system
components for monitoring and control purposes.
Figure 7: Midplane
For midplane serial number information, see “Displaying M7i Router Components and
Serial Numbers” on page 213.
Related
Documentation
M7i Router Description on page 3•
• M7i Chassis Description on page 11
M7i Cable Management System
The cable management system consists of racks that attach vertically to each side of
the chassis at the front. Pass PIC cables through the slots in the racks to keep the cables
organized and securely in place, and to avoid bending optical cables beyond the proper
bend radius. The cable management system evenly distributes the weight of a cable, so
that it is not subjected to undue stress at the connector.
Related
Documentation
• Installing the M7i Cable Management System on page 109
• M7i Router Description on page 3
• Overview of M7i Router Installation on page 103
13Copyright © 2019, Juniper Networks, Inc.
Chapter 3: Chassis Components and Descriptions
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