Datasheet

CHAPTER 3
System Architecture Overview
•
System Architecture Overview on page 29
•
M7i and M10i Packet Forwarding Engine Architecture on page 30
•
Routing Engine Architecture on page 31
System Architecture Overview
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 19 on page 29 illustrates the relationship between the Packet
Forwarding Engine and the Routing Engine.
Figure 19: System Architecture
Related
Documentation
M7i Chassis Description on page 6•
• M7i Midplane Description on page 7
• M7i Power System Description on page 23
29Copyright © 2012, Juniper Networks, Inc.