Juniper CBL-M40-PWR-EU User Manual
Packet Forwarding Engine
M40 Internet Router Hardware Guide
12
The PICs that install on both types of FPC are also hot-removable and hot-insertable. For
more information, see “Physical Interface Cards (PICs)” on page 10.
more information, see “Physical Interface Cards (PICs)” on page 10.
Figure 4: FPC Installed in Slot FPC7
FPC Components
Each FPC contains the following components:
FPC card carrier—Houses the other FPC components.
I/O Manager ASIC—Parses Layer 2 and Layer 3 data and performs encapsulation and
segmentation.
Two identical SDRAM dual inline memory modules (DIMMs)—Form the memory pool
shared with the other FPCs installed in the router.
Parity-protected SSRAM—Stores data structures used by the I/O Manager ASIC.
Processor subsystem—Manages packet handling in the FPC and communication with
the SCB. It is a PowerPC 603e-based CPU with parity-protected DRAM.
EEPROM—Stores the serial number and revision level of the FPC.
Two LEDs—Indicate FPC status. There is a green one labeled
OK
and a red one labeled
FAIL
. The LEDs for each FPC are located directly below it, on the router craft interface.
For more information, see “FPC LEDs and Offline Button” on page 18.
Offline button—Prepares the FPC for removal from the router when pressed. Like the
LEDs, an offline button is located on the craft interface directly below each FPC slot. For
more information, see “FPC LEDs and Offline Button” on page 18.
more information, see “FPC LEDs and Offline Button” on page 18.
Extractor clips—Control the locking system that secures the FPC in the card cage.
1059
RX AC
TIVITY
RX
STATU
S
TX
LINE
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