Juniper Networks
Log in
|
How to Buy
|
Contact Us
|
United States (Change)
Choose Country
Close

Choose Country

North America

  • United States

Europe

  • Deutschland - Germany
  • España - Spain
  • France
  • Italia - Italy
  • Россия - Russia
  • United Kingdom

Asia Pacific

  • Asean Region (Vietnam, Indonesia, Singapore, Malaysia)
  • Australia
  • 中国 - China
  • India
  • 日本 - Japan
  • 대한민국 - Korea
  • 台灣 - Taiwan
Solutions
Products & Services
Company
Partners
Support
Education
Community
Security Intelligence Center

Technical Documentation

Download Software
Research a Problem Login required
Case Management Login required
Contract & Product Management Login required
Technical Documentation
Documentation Archive
Enterprise MIBs
File Format Help
Glossary
Portable Libraries
End-of-Life Products
Contact Support
Guidelines and Policies
Security Resources
Home > Support > Technical Documentation > M Series Routers > M120 Router Hardware > M120 Field-Replaceable Units (FRUs)
Print
Rate and give feedback:  Feedback Received. Thank You!
Rate and give feedback: 
Close
This document helped resolve my issue.  Yes No

Additional Comments

800 characters remaining

May we contact you if necessary?

Name:  
E-mail: 
Submitting...

M Series Search

Advanced Search |  Search Tips
 

Supported Platforms

  • M120 Routers
 
 

Related Documentation

  • M Series
  • M120 Router Chassis Description
  • Overview of Troubleshooting Resources for the M120 Router
 
Recent Community Posts
Show All Show Fewer 
 
 
Related Links
M Series Product Literature
  • Junos Central
  • Junos Technotes
  • Junos Day One Books
M Series Certification
  • Fast Track Certification Program
  • Certification Study Guides
Junos Technical Education Courses (Free)
  • Networking Fundamentals
  • Junos As A Second Language
  • Junos As A Scripting Language
  • Junos As A Security Language
  • Juniper Networks Books
Support
  • Junos Software (Canada & US)  Login required
  • Junos Software (Worldwide) Login required
  • Knowledge Base - Browse M Series Articles  Login required
  • Technical Bulletins for M Series Login required
  • IOS to Junos Migration Tool Login required
  • ScreenOS to Junos software with enhanced services Migration Tool Login required
Show All Show Fewer 
 
 

M120 Field-Replaceable Units (FRUs)

Field-replaceable units (FRUs) are router components that can be replaced at the customer site. Replacing most FRUs requires minimal router downtime. The router uses the following types of FRUs:

  • Hot-removable and hot-insertable FRUs—You can remove and replace these components without powering off the router or disrupting the routing functions.
  • Hot-pluggable FRUs—You can remove and replace these components without powering down the router, but the routing functions of the system are interrupted when the component is removed.

Table 1 lists the FRUs for the M120 router. If the router contains a redundant host subsystem, the Control Board (CB) and the Routing Engine are hot-removable and hot-insertable. Before you replace a CB or a Routing Engine, you must take the host subsystem offline (see Taking the M120 Host Subsystem Offline).

Table 1: M120 Field-Replaceable Units

Hot-Removable and Hot-Insertable FRUs

Hot-Pluggable FRUs

Air filter

Craft interface

Control Board (CB) (if redundant)

Routing Engine (if redundant)

Forward Engine Boards (FEBs)

Flexible PIC Concentrators (FPCs)

Compact Flexible PIC Concentrators (CFPCs)

AC and DC power supplies (if redundant)

Front and rear fan trays

Physical Interface Cards (PICs)

Control Board (CB) (if not redundant)

Routing Engine (if not redundant)

Forwarding Engine Boards (FEBs) (if not redundant)

 

Related Documentation

  • M Series
  • M120 Router Chassis Description
  • Overview of Troubleshooting Resources for the M120 Router
 

Published: 2011-02-23

 
  • About Juniper
  • The New Network
  • Investor Relations
  • Press Releases
  • Newsletters
  • Juniper Offices
  • Resources
  • How to Buy
  • Partner Locator
  • Image Library
  • Visio Templates
  • Security Center
  • Community
  • Forums
  • Blogs
  • Junos Central
  • Social Media
  • Support
  • Technical Documentation
  • Knowledge Base (KB)
  • Software Downloads
  • Product Licensing
  • Contact Support
Site Map / RSS Feeds / Careers / Accessibility / Feedback / Privacy & Policy / Legal Notices
Copyright© 1999-2012 Juniper Networks, Inc. All rights reserved.
Help
|
My Account
|
Log Out