Juniper Networks M5 - Manual (Page 51)

Routing Engine Architecture
Figure 13: Packet Forwarding Engine Components and Data Flow
1335
= ASIC
Routing
Engine
Midplane
PIC
Controller
PIC
Controller
Packet
out
Packet
in
Distributed
Buffer
Manager
Distributed
Buffer
Manager
FEB
Internet
Processor
II
I/O
Manager
Routing Engine Architecture
The Routing Engine is an Intel-based PCI platform running the JUNOS Internet software,
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 14).
The Routing Engine has a dedicated 100-Mbps internal connection to the Packet Forwarding
Engine.
System Architecture Overview 31