M320 Router Overview; Chapter 1 M320 Router Overview; M320 Router Description - Juniper M320 Hardware Manual

CHAPTER 1

M320 Router Overview

M320 Router Description

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Copyright © 2010, Juniper Networks, Inc.
M320 Router Description on page 3
The M320 Multiservice Edge Router is a high-density edge aggregation, routing, and
service creation platform that builds on Juniper Networks service-built edge design.
Constructed with separations between the control plane, forwarding plane, and services
plane, the router supports multiple services on a single platform. The Junos OS 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 that match current fiber-optic capacity. This
design eliminates processing and traffic bottlenecks, permitting the router to achieve
high performance.
The router can be deployed in core, peering, and data center applications, but is optimized
for dense edge aggregation and service creation. The M320 router can provide a single
point of edge aggregation for thousands of customers over any access type, including
ATM, Frame Relay, Ethernet, and TDM, at any speed from DS0 up to OC192/STM64 and
10-Gigabit Ethernet.
The router is a half-rack chassis that supports up to eight Flexible PIC Concentrators
(FPCs) providing up to 64 SONET/SDH OC48/STM16, 16 SONET/SDH OC192/STM64,
or 160 Gigabit Ethernet ports for the router. In a standalone configuration, the Router's
maximum aggregate throughput is 320 gigabits per second (Gbps), half duplex. The
routersupports up to eight of these FPCs:
Type 1 FPCs—Rated at 4 Gbps full duplex, supports up to four PICs.
Type 2 FPCs—Rated at 16 Gbps full duplex, supports up to four PICs.
Type 3 FPCs—Rated at 20 Gbps full duplex, supports up to two PICs, including
higher-speed PICs.
The router can operate with any FPC type in any slot. Type 1 FPCs and Type 2 FPCs each
support four PICs, and Type 3 FPCs supports two PICs.
M320 Chassis Description on page 6
M320 Router Physical Specifications on page 245
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