T640 Flexible Pic Concentrators (Fpcs) Overview; T640 Fpc Description - Juniper T640 Hardware Manual

Related
Documentation

T640 Flexible PIC Concentrators (FPCs) Overview

T640 FPC Description

Copyright © 2013, Juniper Networks, Inc.
T640 Hardware Component Overview on page 11
T640 Router Description on page 3
T640 Physical Specifications on page 421
T640 FPC Description on page 17
T640 FPCs Supported on page 27
Up to eight Flexible PIC Concentrators (FPCs) install vertically in the front of the T640
Core Router (see Figure 7 on page
to . An FPC can be installed into any FPC slot on the router, regardless of which
FPC0 FPC7
PICs it contains.
If a slot is not occupied by an FPC, an FPC blank panel must be installed to shield the
empty slot and to allow cooling air to circulate properly through the router.
Each FPC contains one or two Packet Forwarding Engines. The Packet Forwarding Engines
receive incoming packets from the PICs installed on the FPC and forward them through
the switch planes to the appropriate destination port. Each FPC contains data memory
that is managed by the Queuing and Memory Interface ASICs.
FPCs are hot-removable and hot-insertable, as described in
Units" on page 217. When you install an FPC into a functioning router, the Routing Engine
downloads the FPC software, the FPC runs its diagnostics, and the PICs housed on the
FPC are enabled. Forwarding continues uninterrupted during this process. For FPC
replacement instructions, see
Each FPC consists of the following components:
FPC card carrier.
One or two Packet Forwarding Engines, consisting of Layer 2/Layer 3 Packet Processing
ASICs, Switch Interface ASICs, T-series Internet Processor ASICs, and a Memory
Mezzanine Board (MMB) which includes the Queuing and Memory Interface ASICs.
Each Type 1, Type 2, and Type 4 FPC has one Packet Forwarding Engine, and each Type
3 FPC has two Packet Forwarding Engines.
Processor Mezzanine Board (PMB), which includes a 300-MHz CPU, system controller,
256 MB of SDRAM, and two Fast Ethernet interfaces.
Two LEDs, located on the craft interface above the FPC, that display the status of the
FPC. For more information about the FPC LEDs, see
and Online/Offline Buttons" on page
FPC online/offline button, located on the craft interface above the FPC.
Chapter 3: T640 Router Hardware Component Overview
18). The FPC slots are numbered left to right from
"Replacing a T640 FPC" on page
"T640 Craft Interface FPC LEDs
55.
"T640 Field-Replaceable
288.
17