Juniper Networks M160 manual Switching and Forwarding Module

Hardware Component Overview

FPCs, while the second forwards notification of routing decisions to the I/O Manager ASICs.

One Internet Processor II ASIC—Performs route lookups and makes routing decisions.

Parity-protected SSRAM—Stores the forwarding table.

Processor subsystem—Manages SFM functions and handles exception packets. The processor has the following components:

One PowerPC 603e processor

Parity-protected Level 2 cache

Parity-protected DRAM

EEPROM—Stores the serial number and revision level.

Offline button—Prepares the SFM for removal from the router when pressed.

Two LEDs—Indicate SFM status. There is a green one labeled OK and an amber one labeled FAIL. Table 7 describes the LED states.

Ejector handles and locking tabs—Control the locking system that secures the SFM in the chassis.

NOTE: For specific information about SFM components (for example, the amount of SSRAM and DRAM), issue the show chassis sfm detail command.

Figure 8: Switching and Forwarding Module

Ejector handle

Ejector locking tab

Offline button LEDs

1184

Packet Forwarding Engine 21