Routing Engine Architecture; Figure 19: Packet Forwarding Engine Components And Data Flow - Juniper M7I Hardware Manual

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Routing Engine Architecture

Copyright © 2010, Juniper Networks, Inc.
The integrated ASIC reassembles data cells stored in shared memory into data packets
5.
as they are ready for transmission and passes them to the outbound networking
interface.
The outbound networking interface transmits the data packets.
6.

Figure 19: Packet Forwarding Engine Components and Data Flow

M7i Compact Forwarding Engine Board (CFEB) and Enhanced Compact Forwarding
Engine Board (CFEB-E) Description on page 8
M7i Router Description on page 3
The Routing Engine runs the Junos OS, which Juniper Networks has developed and
optimized to handle large numbers of network interfaces and routes. The software
consists of a set of system processes running in protected memory modules on top of
an independent operating system. The Junos kernel supports Junos system processes,
which handle system management processes, routing protocols, and control functions
(see Figure 20 on page 30).
The Routing Engine has a dedicated 100-Mbps internal connection to the Packet
Forwarding Engine.
Chapter 3: System Architecture Overview
29