Juniper M Series User Manual

Table 13: T640 Router Major Hardware Components (continued)
Offline
Button
Field-
ReplaceableRedundantFunctionQuantityComponent
—Hot-removable,
hot-insertable
YesDistributes needed voltages to router
components
2Power supply (DC only)
YesHot-removable,
hot-insertable
YesProvides routing functions and routing
tables
1–2Routing Engine
YesHot-pluggableYesProvides Stratum 3 SONET/SDH clockings1 - 2SONET Clock Generator
(SCG)
YesHot-removable,
hot-insertable
4 active,
1 standby
Provides switch fabric5SIB
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.
Related
Documentation
T640 Core Router Overview on page 31•
T1600 Core Router Overview
The T1600 router delivers up to 1.6 Tbps of capacity (100 Gbps/slot) with the ability to
forward up to 1.92 billion pps and supports eight 100-Gigabit Ethernet ports, 16
OC-768c/STM-256 ports, 64 OC-192/STM-64 ports, or 80/160 10-Gigabit Ethernet (line
rate/oversubscribed). The T1600 router also supports lower-speed interfaces for
combining high-speed core routing with dedicated access aggregation in a single platform.
The T1600 router supports Junos OS, which provides router configuration and monitoring.
Figure 15 on page 35 and Figure 16 on page 36 illustrate the front and rear of a T1600
router.
Copyright © 2012, Juniper Networks, Inc.34
M Series and T Series Routers Monitoring and Troubleshooting Guide

Juniper M Series Specifications

General

Brand	Juniper
Model	M Series
Category	Network Router
Language	English