Figure 14: T640 Router - Juniper M Series Monitoring And Troubleshooting Manual

M Series and T Series Routers Monitoring and Troubleshooting Guide

Figure 14: T640 Router

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In a standalone configuration, the T640 router's maximum aggregate throughput is 320
Gbps, full duplex.
The T640 router supports two types of Flexible PIC Concentrators (FPCs):
FPC2—Rated at 10 Gbps full duplex; supports PICs that are also used in the M160
router.
FPC3—Rated at 40 Gbps full duplex; supports higher-speed PICs.
The T640 router can operate with any combination of FPC2s and FPC3s installed. Each
FPC contains one or two Packet Forwarding Engines. The Packet Forwarding Engine
consists of Layer 2/Layer 3 Packet Processing application-specific integrated circuits
(ASICs), Switch Interface ASICs, T Series Internet Processor ASICs, and a memory
subsystem (MMB) which includes the Queuing and Memory Interface ASICs. The Packet
Forwarding Engine receives incoming packets from the PICs installed on the FPC and
forwards them through the switch planes to the appropriate destination port. Each FPC
contains data memory, which is managed by the Queuing and Memory Interface ASICs.
Each FPC3 has two Packet Forwarding Engines, and each FPC2 has one Packet Forwarding
Engine.
PICs provide the physical connection to various network media types, receiving incoming
packets from the network and transmitting outgoing packets to the network. PICs for
the T640 router currently support the following network media types: Gigabit Ethernet,
Copyright © 2012, Juniper Networks, Inc.