System Architecture Overview; Figure 18: System Architecture - Juniper M7I Hardware Manual

CHAPTER 3

System Architecture Overview

System Architecture Overview

Related
Documentation
Copyright © 2010, Juniper Networks, Inc.
System Architecture Overview on page 27
M7i and M10i Packet Forwarding Engine Architecture on page 28
Routing Engine Architecture on page 29
The router architecture consists of two major components:
Packet Forwarding Engine—Performs Layer 2 and Layer 3 packet switching, route
lookups, and packet forwarding.
Routing Engine—Provides Layer 3 routing services and network management.
The Packet Forwarding Engine and the Routing Engine perform independently but
communicate constantly through a 100-Mbps internal link. This arrangement provides
streamlined forwarding and routing control and the ability to run Internet-scale networks
at high speeds. Figure 18 on page 27 illustrates the relationship between the Packet
Forwarding Engine and the Routing Engine.

Figure 18: System Architecture

M7i Chassis Description on page 6
M7i Midplane Description on page 7
M7i Power System Description on page 21
27