Juniper Networks M5 - Manual (Page 32)

Routing Engine
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Processor subsystem—Manages FEB functions and handles exception packets. The
processor has the following components:
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One PowerPC 603e processor
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Parity-protected Level 2 cache
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Parity-protected DRAM
•
EEPROM—Stores the serial number and revision level.
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19.44-MHz stratum 3 reference clock—Generates clock signal for SONET/SDH PICs.
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I2C controller—Monitors the status of router components.
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Ejector levers—Control the locking system that secures the FEB in the chassis.
For specific information about FEB components (for example, the amount of
DRAM), issue the show chassis feb command.
Figure 5: Forwarding Engine Board
1307
Routing Engine
The Routing Engine is an Intel-based PCI platform that runs JUNOS Internet software.
Software processes that run on the Routing Engine maintain the routing tables, manage the
routing protocols used on the router, control the router’s interfaces, control some chassis
components, and provide the interface for system management and user access to the router.
12 M5 and M10 Internet Routers Hardware Guide