Figure 21: Control Packet Handling For Routing And Forwarding Table - Juniper M7I Hardware Manual

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Copyright © 2010, Juniper Networks, Inc.
The Routing Engine constructs and maintains one or more routing tables (see Figure 21
on page 31). From the routing tables, the Routing Engine derives a table of active routes,
called the forwarding table, which is then copied into the Packet Forwarding Engine. The
design of the ASICs allow the forwarding table in the Packet Forwarding Engine to be
updated without interrupting forwarding performance.

Figure 21: Control Packet Handling for Routing and Forwarding Table

Updates
M7i Routing Engine Description on page 18
Maintaining the M7i Routing Engine on page 72
Replacing the M7i Routing Engine on page 97
Chapter 3: System Architecture Overview
31