M320 Multiservice Edge Router Overview - Juniper M Series Monitoring And Troubleshooting Manual

Table 10: M160 Router Major Hardware Components (continued)
Component
Routing Engine
SFM
Related
Documentation

M320 Multiservice Edge Router Overview

Copyright © 2012, Juniper Networks, Inc.
Quantity Function
1–2 Manages routing protocols and maintains
routing tables
1–4 Provides packet switching, packet
forwarding, and route lookup
Field-replaceable units (FRUs) are router components that can be replaced at the
customer site. Replacing FRUs requires minimal router downtime. There are three types
of FRUs:
Hot-removable and hot-insertable—You can remove and replace the component
without powering down the router or interrupting the routing functions.
Hot-pluggable—You can remove the component without powering down the router,
but routing functions are interrupted until the replacement is installed.
Requires router shutdown—You must power down the router before removing the
component.
M160 Internet Router Overview on page 21
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. (See
Chapter 1: M Series Multiservice Edge Routers
Field-
Redundant replaceable
Yes Hot-pluggable
Yes Hot-removable,
hot-insertable
Figure 11 on page 24.)
Offline
Button
–
Yes
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