M7i pics description – Juniper Networks M7I User Manual
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M7i PICs Description
PICs physically connect the router to network media. PICs receive incoming packets from
the network and transmit outgoing packets to the network, performing framing and
line-speed signaling for their media type as required. PICs also encapsulate outgoing
packets received from the Compact Forwarding Engine Board (CFEB) or Enhanced CFEB
(CFEB-E) before transmitting them. The controller ASIC on each PIC performs additional
control functions specific to the PIC media type.
The router supports various PICs, including ATM, Channelized, Gigabit Ethernet, Services,
and SONET/SDH interfaces. You can install PICs of different media types on the same
router as long as the router supports those PICs.
Blank PICs resemble other PICs but do not provide any physical connection or activity.
When a slot is not occupied by a PIC, you must insert a blank PIC to fill the empty slot
and ensure proper cooling of the system.
Four PIC slots are located in one Flexible PIC Concentrator (FPC),
FPC0
, which is built in
to the chassis. The PIC slots are numbered from
0
(zero) through
3
, right to left. The
number of ports on a PIC depends on the type of PIC.
The M7i router has a maximum throughput of 3.2 Gbps full duplex for the FPC with 4 PIC
slots. Inserting a combination of PICs with an aggregate higher than the maximum
throughput is supported, but constitutes oversubscription of the FPC. The fixed interface
card (FIC) has a maximum throughput of 1 Gbps full duplex.
PICs are hot-removable and hot-insertable.
Most PICs supported on the M7i router have the following components.
•
One or more cable connector ports—Accept a network media connector.
•
LEDs—Indicate PIC and port status. Most PICs have an LED labeled
STATUS
on the
PIC faceplate. Some PICs have additional LEDs, often one per port. The meaning of
the LED states differs for various PICs.
•
Ejector lever—Controls the locking system that secures the PIC in the card cage.
Related
Documentation
•
•
M7i End-of-Life PICs Supported
•
M7i PIC LEDs
•
M7I Field-Replaceable Units (FRUs)
•
M7i Flexible PIC Concentrators (FPCs) Description
•
PIC Serial Number ID Label
•
Replacing an M7i PIC
•
Troubleshooting the M7i FIC or PICs
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Copyright © 2010, Juniper Networks, Inc.
M7i PICs Description