T320 Router Major Hardware Components; Table 12: T320 Router Major Hardware Components - Juniper M Series Monitoring And Troubleshooting Manual

M Series and T Series Routers Monitoring and Troubleshooting Guide
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T320 Router Major Hardware Components

Table 12: T320 Router Major Hardware Components

Component
Connector Interface
Panel (CIP)
Control Board
Cooling system
Craft interface
FPC
PIC
Power supply (DC only)
30
OC12c/STM4, OC48c/STM16, OC192c/STM64, and Tunnel services. For more information
on PICs used in the router, see the T320 Core Router PIC Guide.
The T320 router supports two DC power supplies, which share the load evenly.
Three Switch Interface Boards (SIBs) provide the switching function to the destination
FPC. The SIBs create the switch fabric for the router, providing up to a total of 320 million
packets per second (Mpps) of forwarding.
Routing and system management functions of the router are performed by the host
subsystem. The host subsystem consists of the Routing Engine and the Control Board.
The Routing Engine maintains the routing tables used by the router and controls the
routing protocols that run on the router. Each Control Board works with an adjacent
Routing Engine to provide control and monitoring functions for the router. These include
determining Routing Engine mastership, controlling power, reset and SONET clocking
for the other router components, monitoring and controlling fan speed, and monitoring
system status using I²C controllers.
T320 Router Major Hardware Components on page 30
Table 12 on page 30 lists the T320 router major components and characteristics.
Quantity Function
1 Provides ports for external management
and alarm relay devices
1–2 Monitors and controls router components
2 front Cools router components
fan trays,
1 rear fan
tray
1 Displays status and provides an interface
for controlling router functions
1–8 Connect PICs to other router components,
contains Packet Forwarding Engines
1–2 per Provides an interface to various network
FPC media
2 Distributes needed voltages to router
components
Field-
Redundant Replaceable
— Hot-pluggable
Yes Hot-pluggable
Yes hot-removable,
hot insertable
— Hot-removable.
hot-insertable
— Hot-removable,
hot-insertable
— Hot-removable,
hot-insertable
Yes Hot-removable,
hot-insertable
Copyright © 2012, Juniper Networks, Inc.
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