Juniper JUNOS - NETWORK OPERATION GUIDE REV1 User Manual

JUNOS Internet Software Network Operations Guide: Hardware
28 ! M160 Router Major Hardware Components
The M160 router can have up to four Switching and Forwarding Modules (SFMs).
The SFMs contain the Internet Processor II application-specific integrated circuit
(ASIC) and two Distributed Buffer Manager ASICs, and make forwarding decisions,
distribute packets throughout memory, and forward notification of outgoing
packets.
The M160 router includes the host module that constructs routing tables, performs
system management functions, and generates the SONET/SDH clock signal for
SONET/SDH interfaces. The host module contains the Routing Engine and the
Miscellaneous Control Subsystem (MCS). The Routing Engine manages routing
protocols and maintains the routing tables. For a host module to function, both of
these components must be installed and operational.
PICs are available in supported media types, including Asynchronous Transfer Mode
(ATM), Channelized DS3, E1, E3, T1, Ethernet, SONET/SDH, and IP services. The
M160 router supports both M160 and M40e PICs. For more information about
supported PICs for each M-series router type, see the appropriate PIC installation
guide.
The M160 router Internet Processor II ASIC forwards packets at a throughput rate of
up to 160 Gbps. The ASIC technology provides such packet processing as route
lookups, filtering, sampling, rate limiting, load balancing, buffer management,
switching, and encapsulation and de-encapsulation of IP services.
M160 Router Major Hardware Components
Table 9 lists the major M160 router components and characteristics.
Table 9: M160 Router Major Hardware Components
Component Quantity Function Redundant
Field-
replaceable
Offline
Button
CIP 1 Provides ports for external management,
BITS interfaces, and alarm relay devices
– Requires router
shutdown
–
Cooling system 3 impellers
and 1 fan
tray (4
fans)
Cools router components Yes Hot-removable –
Craft interface 1 Displays status and allows you to perform
control functions
– Hot-removable,
hot-insertable
–
FPC 1–8 Connects PICs to other components and
houses shared memory
– Hot-removable,
hot-insertable
Yes
Host module 1–2 Handles routing protocols and maintains
routing tables
Yes Hot-pluggable –
MCS 1–2 Provides system control and monitoring Yes Hot-pluggable Yes
PCG 2 Provides a 125-MHz system clock Yes Hot-pluggable Yes
PICs 1–4 per
FPC
Provides interfaces to various network
media
– Hot-removable,
hot-insertable
Yes
Power supply (DC only) 2 Distributes needed voltages to
components
Yes Hot-removable,
hot-insertable
–

Juniper JUNOS - NETWORK OPERATION GUIDE REV1 Specifications

General

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