Juniper JUNOS - NETWORK OPERATION GUIDE REV1 User Manual

JUNOS Internet Software Network Operations Guide: Hardware
32 ! M320 Router Major Hardware Components
The M320 router includes Switch Interface Boards (SIBs) that provide the switching
function to the destination Flexible PIC Concentrator (FPC) at a total of 385 million
packets per second (Mpps) of forwarding. The host subsystem, which consists of
the Routing Engine and Control Board, provides the routing and system
management functions of the router.
The router supports up to eight FPCs providing SONET/SDH OC-48/STM16,
SONET/SDH OC192/STM64, and 160-Gigabit Ethernet media. The router supports
three types of FPCs: FPC1 for hot-swappable M40e PICs, FPC2 for hot-swappable
M160 PICs, and FPC3 for 10-Gbps T-series Physical Interface Cards (PICs). For more
information about supported PICs, see the M320 Internet Router PIC Guide.
The M320 router provides a maximum aggregate throughput of 320 gigabits per
second (GBps) full duplex. The JUNOS software runs on a control subsystem with
dedicated hardware, ensuring that control functions are performed without
affecting the forwarding subsystem. Forwarding and packet processing operations
in the router are performed by dedicated programmable ASICs that enable the
router to achieve data forwarding rates the match current fiber-optic capacity.
M320 Router Major Hardware Components
Table 10 lists the T320 router major components and characteristics.
Table 10: M320 Router Major Hardware Components
Component Quantity Function Redundant
Field-
Replaceable
Offline
Button
Connector Interface Panel
(CIP)
1 Provides ports for external management
and alarm relay devices; includes an
electrostatic discharge (ESD) point
— Hot-pluggable —
Control Board 1–2 Monitors and controls router components
(requires a Routing Engine)
Yes Hot-pluggable
(if not redundant)
Yes
Cooling system 2 front fan
trays,
1 rear fan
tray
Cools router components Yes Hot-removable,
Hot insertable
—
Craft interface 1 Displays status and provides an interface
for controlling router functions
— Hot-removable.
hot-insertable
—
FPC 1–8 Connects PICs to other router
components, contains Packet Forwarding
Engines (supports FPC1, FPC2, and FPC3)
— Hot-removable,
hot-insertable
Yes
Host subsystem 1–2 Consists of a Routing Engine and Control
Board and provides routing and system
management functions
Yes Hot-pluggable —
PIC 1–4 per
FPC
Provides an interface to various network
media
— Hot-removable,
hot-insertable
Yes
Power supply (DC only) 2 Distributes needed voltages to router
components
Yes Hot-removable,
hot-insertable
—
Routing Engine 1–2 Provides routing functions and routing
tables (requires a Control Board)
Yes Hot-pluggable
(if not redundant)
Reset
button
SIB 4 Provides switching function to the
destination FPC
Yes Hot-removable,
hot-insertable
Yes

Juniper JUNOS - NETWORK OPERATION GUIDE REV1 Specifications

General

Brand	Juniper
Model	JUNOS - NETWORK OPERATION GUIDE REV1
Category	Software
Language	English