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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 e x ception packets.
The processor has the following components:
One PowerPC 603e processor
P arity-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
SFMinthechassis.
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
1184
Offline button
Ejector handle
Ejector locking tab
LEDs
Packet Forwarding Engine 21