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Cisco ONS 15540 ESPx Hardware Installation Guid e
Copyright © 2002-2005 Cisco Sys tems , Inc. All rights rese rved.
Preface xi
Audience xi
New and Changed Informati on xii
Organization xiii
Conventions xiii
Related Documentation xiv
Obtaining Documentation xiv
Cisco.com xv
Documentation DVD xv
Ordering Documentation xv
Documentation Feedback xvi
Cisco Product Secu rity Overview xvi
Reporting Security Problems in Cisco Products xvii
Obtaining Technical Assistance xviii
Cisco Technical Support Website xvi ii
Submitting a Service Request xix
Definitions of Service Request Severity xix
CONTENTS
CHAPTER
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Obtaining Additional Publications and Informatio n xx
1 Product Overview 1-1
Cisco ONS 15540 ESPx Chassis 1-1
Fan Assembly 1-4
Power Supplies 1-5
Backplane 1-5
Cisco ONS 15540 ESPx Hardware Installation Guide
v
Contents
Alarm Cards 1-5
Cisco ONS 15540 ESPx Compo nents 1-7
Processor Cards 1-7
Processor Card LEDs 1-8
Management Ports 1-10
Alarms 1-12
Flash SIMM 1-13
Flash PC Card Slots 1-13
NMI Clear 1-13
NME Interface 1-14
Mux/Demux Motherboards and Mux/Demux Modules 1-14
Mux/Demux Motherboard LEDs 1-16
PSMs 1-17
PSM LEDs 1-18
Line Card Motherboards 1-19
Line Card Motherboard LEDs 1-20
Transponder Modules 1-21
SM Transponder Modules 1-22
MM Transpon de r M o du le s 1-22
Type 2 Extended Range Transponder Modules with SFP Optics 1-22
Transponder Module LEDs 1-25
10-GE Transponder Module 1-26
10-GE Transponder Module LEDs 1-27
Cable Management Tray 1-29
Cross Connect Drawers 1-30
Cable Storage Drawer 1-30
Blank Panels 1-31
CHAPTER
vi
2 Installing the Cisco ONS 15540 ESPx 2-1
Before Installin g 2-2
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Unpacking and Inspecting the Cisco ONS 15540 ESPx 2-2
Mounting the Chassis 2-3
Rack-Mounting the Chassis 2-4
Installing the Chassis 2-6
Installing the Drawers 2-10
Installing the Adapters in the Cross Con nect Panels 2-12
Installing the Vertical Cable Guides 2-16
Grounding the Chassis 2-18
Shelf Grounding Guidelines 2-18
Shelf Grounding Procedures 2-18
Installing and Removing Motherboards and Processor Cards 2-21
Installing Mux/Demux Motherboards and Pro cessor Cards 2-21
Removing Mux/Demux Motherboards and Processor Cards 2-22
Installing Line Card Motherboards 2-22
Removing Line Card Motherboards 2-23
Contents
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Installing and Removing Modules 2-23
Installing Mux/Demu x Mo dules 2-24
Installing 2.5- Gbps Type 1 Transponder Modules 2-24
Installing PSMs 2-25
Installing the Type 2 Extended Range Transponder Modules with SF P
Optics
2-25
Removing SFP Optics from the Type 2 Extended Range Transponders
Modules
2-26
Removing SFP Optics with MT-RJ Connectors 2-27
Removing SFP Optics with LC Connectors 2-29
Installing 10-GE Transponder Modules 2-31
Using CLI Prior to 2.5-Gbps Transponder Module Removal 2-33
Verifying 2.5-Gbps Transponder Module Power Status 2-34
Removing Modules 2-35
Cisco ONS 15540 ESPx Hardware Installation Guide
vii
Contents
Installing and Removing the Fan Assembly 2-35
Powering Up the Shelf 2-40
Rack-Mounting the 15540-PWR-AC External Power Shelf 2-41
Installing and Connecting the 15540-P WR-AC External Power
Supply
2-43
Connecting DC-Inpu t Power from the 155 40-PWR-AC Power Supply 2-48
Rack-Mounting the 15540-ACPS-N-E External Power Shelf 2-51
Connecting DC-Input Power from the 15540-ACPS-N-E External Power
Shelf
2-53
Installing and Connecting the 15540-ACPS-N-E External Power
Supply
2-57
Using Y-Cable 2-61
Attaching the Y-Cable 2-62
CHAPTER
viii
3 Connecting the Cisco ONS 15540 ESPx 3-1
Preparing for Network Connections 3-2
Cleaning the Shelf and Connectors 3-2
Connecting the Processor Card to a Network 3-4
Connecting the Console Port 3-5
Connecting the Auxiliary Port 3-5
Connecting the NME Por t 3-6
Connecting Mux/Demux Modules 3-6
Cabling Mux/Demux Modules with OSC 3-7
Interconnecting Mux/Demu x M o du le s 3-9
Connecting PSMs 3-9
Cabling PSMs 3-10
Connecting Transponder Modules 3-13
Connecting the Cables 3-16
Direct Connections with Cable Storage Drawers 3-16
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Contents
Mux/Demux Module an d Line Car d Motherboar d Cabling with Cr oss Connect
Drawers
3-21
Connecting Mux/Demu x Motherboards Land Line Card Motherboards with
Cross Connect Drawers
3-28
Connecting the 2. 5-Gbps Transponder Modul e 3-30
Using MTP Cables for Direct Connections 3-33
Cabling 2.5-Gbps Transponder Modules with Cross Connect Drawers 3-38
Connecting the 10- GE Transponder Module 3-45
Using MTP Cables for Direct Connections 3-46
Using Y Cables for 10- G E Direct Connections 3-51
Cabling 10-GE Transponder Modules with Cros s Connect Drawers 3-56
APPENDIX
I
NDEX
A Specifications A-1
Chassis Specifications A-2
Channel to Wavelength Mapping A-3
Mux/Demux Motherboard Specifications A-5
4-Channel OADM Module Specifications A-6
8-Channel OADM Module Specifications A-7
32-Channel Terminal Mux/Demux Module Specific ations A-8
PSM Optical Specif ica t io ns A-9
Line Card Motherboard Specifications A-10
2.5-Gbps Transpo nder Module Specifications A-11
Type 2 Extended Range Transpon de r Mo dule Specifications A-13
SFP Optics Specifications A-14
10-GE Transponder Module Specificat ions A-22
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Cisco ONS 15540 ESPx Hardware Installation Guide
ix
Contents
Cisco ONS 15540 ESPx Hardware Installation Guide
x
78-16436-01
Audience
Preface
This preface describes the audience, organization, and conventions of the
Cisco ONS 15540 ESPx H ardware Installation Guide. It also provides
information on how to obtain related documentation and technical assistance.
The information contained in this document pertains to the entire range of
hardware supporte d o n the Cisc o ON S 1 554 0 E SPx pl atf orm. A s n ew hardw are
and Cisco IOS sof tware relea ses are ma de ava ilab le for the
Cisco ONS 15540 ESPx platform, verification of compatibility becomes
extremely impor tant . T o en sure th at your h ardw a re i s su ppo rte d b y your r ele as e
of Cisco IOS software, see the “New and Changed Information” section on
page xii. Also refer to the “Hardware Supported” section of the latest release
notes for the Cisco ONS 15540 ESPx.
This guide is intend ed for ex perien ced ne twork a dministr ators who are
responsible for in stall ing an d maint ainin g th e Cisco O NS 1 554 0 E SPx.
78-16436-01
Cisco ONS 15540 ESPx Hardware Installation Guide
xi
New and Changed Information
New and Changed Information
This section lists the new and changed information for the Cisco ONS 15540 ESPx
Ha rd w are I ns tal l a tion G uide fo r Cisco IOS Relea se 12.2S and la ter.
Feature Release Description Location
Variable rate SFP
optics
Protection switch
module (PSM)
Type 2 extended
range transparent
transponder module
with selectable
fixed rate SFP
optics
12.1(12c)EV3 Two new SFP optics that
support a wide range of
data rates.
12.1(12c)EV3 The main purp ose of the
protection switch m odul e
is to trigger trunk fiber
protection after a trunk
fiber has been cut.
12.1(10)EV A transponder module that
accepts selectable
fixed-rate SFP optics
supporting specfic
protocol rates.
“Type 2 Extended Rang e
Transponder Modules with SFP
Optics” section on page 1-22
“” section on pag e 1-16
“Cabling PSMs” section on
page 3-10
“Type 2 Extended Rang e
Transponder Modules with SFP
Optics” section on page 1-22
“Installing the Type 2 Extended
Range Transponder Modules with
SFP Optics” section on page 2-25
Preface
xii
“Removing SFP Optics from the
Ty pe 2 E xten de d R ange
Transponders Modules” section on
page 2-26
Cisco ONS 15540 ESPx Hardware Installation Guide
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Preface
Organization
This guide describes how to inst all th e Cisc o ONS 155 40 ESPx and is orga nized
as follows :
Chapter Title Description
Chapter 1 Product Overview Describes the Cisco ONS 1554 0
Chapter 2 Installing the Cisco ONS
Chapter 3 Connecting the Cisco
Appendix A Specifications Lists the specifications for the
15540 ESPx
ONS 15540 ESPx
Organization
ESPx chassis and its components
Describes how to install the
Cisco ONS 15540 E SPx chassis and
its compon ent s
Describes how to install and route the
cables in the Cisco ONS 15540 ESPx
Cisco ONS 15540 E SPx chassis and
components
Conventions
Notes use the following conventions:
Note Means reader take note. Notes contain helpful suggestions or
references to material not cove red in the publication.
Cautions use the following conv entions:
Caution Means caution should be taken. Cautions contain information that is
important to follow so as not to cause harm to the equipment.
Warnings use the fol low ing co nvent ions:
Warning
78-16436-01
IMPORTANT SAFETY INSTRUCTIONS
This warning symbol means danger. You are in a situation that could cause
Cisco ONS 15540 ESPx Hardware Installation Guide
xiii
Related Documentation
bodily injury. Before you work on any equipment, be aware of the hazards
involved with electrical circuitry and be familiar with standard practices for
preventing accidents. Use the statement number provided at the end of each
warning to locate its translation in the translated safety warnings that
accompanied this device.
SAVE THESE INSTRUCTIONS
Related Documentation
Refer to the following documents for additional information about the
Cisco ONS 15540 ESPx:
• Regulatory Complian ce and Safet y Inform ation for the Ci sco ONS 15500
Series
• Cisco ONS 15 540 ESP x Plan ning Gui de
• Cisco ONS 15540 ESPx Optical Transport Turn-Up and Test Guide
• Cisco ONS 15 540 ESP x Clea ning Procedures for Fiber Optic Connection s
Preface
Statement 1071
• Cisco ONS 15 540 ESP x Con figuration Guide
• Cisco ONS 15 540 ESP x Com man d R eference
• Cisco ONS 15 540 E SP x TL1 Comm and R eference
• Cisco ONS 15 540 ESP x Sy stem Al arms and Error Messages
• Cisco ONS 15 540 ESP x Troubleshooting Guide
• Network Management for the Cisco ONS 15 540 ESPx
• MIB Quick R eference for t he Ci sco O NS 15 500 Se rie s
Obtaining Documentation
Cisco documentation and a dd ition al litera tur e are available on Cisco.c om. Ci sco
also provides several ways to obtain technical assistance and other technical
resources. These sections e xplain ho w to obta in technical in formation from Cisco
Systems.
Cisco ONS 15540 ESPx Hardware Installation Guide
xiv
78-16436-01
Preface
Cisco.com
You can access the most current Cisco documentation at this URL:
http://www.cisco.com/univercd/home/home.htm
You can access the Cisco website at this URL:
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You can access international Cisco websites at this URL:
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Documentation DVD
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The Documentation DVD package is available as a single unit.
Registered Cisco.com users (Cisco direct customers) can order a Cisco
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Obtainin g Do cumentatio n
Cisco Ordering tool:
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78-16436-01
Cisco ONS 15540 ESPx Hardware Installation Guide
xv
Documentation Feedback
You can order Cisco docum entation i n these ways:
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We appre ciat e your co mmen ts .
Preface
Cisco Product Security Overview
Cisco provides a free online Security Vulnerability Policy portal at this URL:
http://www.cisco.com/en/US/products/products_security_vulnerability_policy.ht
ml
From this site, you ca n pe rf orm t hes e ta sks:
• Report security vulnerabilities in Cisco products.
• Obtain assistance with security incidents that involve Cisco products.
• Register to rece ive security infor mation fro m Cisco .
Cisco ONS 15540 ESPx Hardware Installation Guide
xvi
78-16436-01
Preface
A current list of security advisories and notices for Cisco products is available at
this URL:
http://www.cisco.com/go/psirt
If you prefer to see advisories and notices as they are updated in real time, you
can access a Product Security Incident Response Team Really Simple Syndication
(PSIRT RSS) feed from this URL:
http://www.cisco.com/en/US/products/products_psirt_rss_feed.html
Reporting Security Problems in Cisco Products
Cisco is committed to delivering secure products. We test our products internally
before we release them, and we stri ve to correct all vulne rabilities q uickly. If you
think that you might have identified a vulner abilit y in a Cisco produ ct, cont act
PSIRT:
• Emergencies—security-alert@cisco.com
• Nonemergencies —psirt@cisco.com
Cisco Product Security Overview
78-16436-01
Tip We encourage you to use Pretty Good Privacy (PGP) or a compatible product to
encrypt any sensitive information tha t you send to Cisc o. PSIRT can work from
encrypted information that is compatible with PGP versions 2.x throug h 8.x.
Never use a revoked or an expired encryption key. The correct public key to use
in your correspondence with PSIRT is the one that has the most recent creation
date in this public key server list:
http://pgp.mit.edu: 11371/pk s/lo okup? search= psir t%40cis co.c om&op= ind ex&ex
act=on
In an emergency, you can also reac h PSIRT by telephone:
• 1 877 228-7 302
• 1 408 525-6 532
Cisco ONS 15540 ESPx Hardware Installation Guide
xvii
Obtaining Technical Assistance
Obtaining Technical Assistanc e
For all customers, partners, resellers, and distributors who hold valid Cisco
service contracts, Cisco Technical Support provides 24-hour-a-day,
award-winning technical assist ance. T he Cisco Technical Support Website on
Cisco.com features extensive online support resources. In additio n, Cisco
Technical Assistance Center (TAC) engineer s provide telephon e suppor t. If you
do not hold a valid Ci sco serv ice cont rac t, co ntac t y our rese ller.
Cisco Technical Support Website
The Cisco Technical Support Website provides online docum ent s and tool s fo r
troubleshooting a nd re solvi ng t ec hnic al iss ues with C isco produc ts and
technologies. Th e web site is available 2 4 h ours a d ay, 365 days a ye ar, at this
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http://www.cisco.com/techsupport
Access to all tools on the Cisco Technical Support Website requires a Cisco.com
user ID and password. If you have a valid service c ontract but do not have a user
ID or password, you can register at this URL:
Preface
xviii
http://tools.cisco.com/RPF/register/register.do
Note Use the Cisco Product Id entificati on (CPI) tool to locate your product se rial
number before submitting a web or phone request for service. Y ou can access the
CPI tool from the Cisco Technical Support Website by clicking the Tools &
Resources link under Documentation & Tools. Choose Cisco Product
Identification Tool from the Alphabetical Index drop-down list, or click the
Cisco Product Identification Tool link under Alerts & RMAs. The CPI tool
offers three search options: by product ID or mod el name ; by tree view; or for
certain products, by copying and pasti ng show comm and o ut put. S ear ch r esu lt s
show an illustration of your product with the serial number label location
highlighted. Locat e the seria l number lab el on your prod uct and rec ord the
information before placing a service call.
Cisco ONS 15540 ESPx Hardware Installation Guide
78-16436-01
Preface
Submitting a Service Request
Using the online TAC Ser vice Re quest Tool is the fastest way to open S3 and S4
service requests. (S3 a nd S4 ser vic e reque sts ar e those i n whi ch y our net work is
minimally impaired or fo r which you require product info rmat ion.) A fter you
describe your sit uatio n, the TAC Service Request Tool provides recommended
solutions. If your issue is not resolved us ing the reco mmen ded res ources, yo ur
service request is assigned to a Cisco TAC engineer. The TAC Service Request
Tool is located at this URL:
http://www.cisco.com/techsupport/servicerequest
For S1 or S2 service requests or if you do not have Internet access, co ntact the
Cisco TAC by telephone. (S1 or S2 serv ice r eque sts a re t ho se i n wh ich you r
production network is down or severely degraded.) Cisco TAC engineers are
assigned immediate ly to S1 and S2 ser vic e re quest s to hel p keep y our business
operations running smoothly.
To open a service request by telep hone, use one of the fo llowing number s:
Asia-Pacific: +61 2 8446 7411 (Australia : 1 800 805 227)
EMEA: +32 2 704 55 55
USA: 1 800 553-2447
Obtaining Technical Assistance
For a complete list of Cisco TAC contacts, go to this URL:
http://www.cisco.com/techsupport/contacts
Definitions of Service Request Severity
To ensure that all service requests are reported in a standard format, Cisco has
established severity definitions.
Severity 1 (S1)—Your net work is “down,” or ther e is a criti cal impa ct to your
business operations. You and Cisco will comm it all nece ssary resour ces aroun d
the clock to resolve the situation.
Severity 2 (S2)—Operation of an existing network is severely degraded, or
significant aspects of y our business ope rat ion are negatively affected by
inadequate performa nce of Cisco pro duc ts. You and Cisco will commit full-time
resources during normal business hours to reso lve the situation .
Cisco ONS 15540 ESPx Hardware Installation Guide
78-16436-01
xix
Preface
Obtaining Additional Publications and Information
Severity 3 (S3) —Opera tiona l per for manc e of you r net w ork is im pair ed, but most
business operations remain functional. You and Cisco will commit resources
during normal business hours to restore servi ce to sati sfactory levels.
Severity 4 (S4)—You require infor mation or as sistance with Cisco product
capabilities, installation, or configuration. There is little or no effect on your
business operations.
Obtaining Additional Publications and Information
Information about C isco pr odu cts, te chnol og ies, a nd network solu tio ns is
available from various online and printed sources.
• Cisco Market place provi des a variety of Cisco books, refe rence gui des, and
logo merchand is e. Visit Cisc o Ma rke tpl ac e, t h e compa ny s tor e, at th is UR L:
http://www.cisco.com/go/marketplace/
• Cisco Press publishes a wi de range o f gener al net working, tra ini ng a nd
certification titles. Both new and experienced users will benefit from these
publications. For current Cisco Press titles and other information, go to Cisco
Press at this URL:
xx
http://www.ciscopress.com
• Packet magazine is the Cisco Systems techni cal user ma gazine for
maximizing Internet and netwo rking investments. Each qua rter, Packet
delivers coverage of the latest industry trends, technology breakthroughs, and
Cisco products and solutions, as w ell as network depl oyment and
troubleshooting ti ps, c onfigura tio n examp les, c ustom er ca se studie s,
certification and training information, and links to scores of in-depth online
resources. You can access Packet magazine at this URL:
http://www.cisco.com/packet
• iQ Magazine is the quar terly publ icat ion fr om Ci sco Sy stem s d esign ed to
help growing compan ies lea rn how t hey ca n u se tec hn ology to i ncr ea se
revenue, streamline their business, and expand services. The publication
identifies the challen ges fac ing these co mpanies and th e technolo gies to help
solve them, using real-world case studies and business strategies to help
readers make sound technology i nvestment decisions. You can access iQ
Magazine at this URL :
http://www.cisco.com/go/iqmagazine
Cisco ONS 15540 ESPx Hardware Installation Guide
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Preface
Obtaining Additional Pub li cations and Information
• Internet Protocol Journal is a qua rte rly jour nal pub lished by Ci sco Syste ms
for engineering p rofe ssiona ls i nvolved in designing, developing, and
operating public and private internets and intranets. You can access the
Internet Protocol Journa l at this UR L:
http://www.cisco.com/ipj
• World-class networking training is available from Cisc o. You can view
current offerings at this URL :
http://www.cisco.com/en/US/learning/index.html
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Obtaining Additional Publications and Information
Preface
xxii
Cisco ONS 15540 ESPx Hardware Installation Guide
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CHAPTER
1
Product Overview
The Cisco ONS 15540 ESPx is an optical transport platform that employs DWDM
(dense wavelength division multiplexing) technology. With the Cisco ONS 15540
ESPx, users can take advantage of the availab ility of dark fiber to build a common
infrastructure that supports data, SAN (storage area network), and TDM
(time-divis ion multiplexi ng) traff ic. The system uses an enhanced chassis with front
fiber-optic cable access for o pt ical int erc onn ect ions bet wee n tr an spon ders an d
optical mux/demux modu les.
This chapter describes the Cisc o ONS 15540 ESPx and incl udes the following
sections:
• Cisco ONS 1554 0 E SPx Chassis, page 1-1
• Cisco ON S 1 554 0 ESPx Com pon ents , page 1- 7
Note Before you install, operate, or service the system , read the Re gulatory Compliance
and Safety Information for the Cisco ONS 15500 Series for important safety
information you sh oul d kn ow befo re wo rking wi th t he syst em.
Cisco ONS 15540 ESPx Chassis
The Cisco ONS 15540 ESPx is a 12-slot modular vertical chassis. The system uses
redundant -48 VDC i nput s. A redundant extern al AC-input power supply is
available or DC-input power can be provided direct ly. Slots 0 and 1 hold th e
optical mux/dem ux mot h erboa rd s, whi ch a r e p opula te d wit h op tica l mux / demux
modules. Slots 2 to 5 and 8 to 11 hold the 2.5-Gbps line card motherboards, which
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1-1
Cisco ONS 15540 ESPx Chassis
are populated with 2.5- Gbps tra nsponder mo dules , and 10-Gb ps line card
motherboards, which are populated with 10-GE transponder modules. Slots 6 to 7
hold the processor cards. (See Figure 1-1.)
The air intake, fan assembly, cable management tray, cross connect drawers, and
cable storage drawers are located beneath the modular slots. The system has an
electrical backplane for system control.
Figure 1-1 shows a populated Cisco ONS 15540 ESPx shelf with a cabl e storage
drawer and two cross conne ct drawer s.
Chapter 1 Product Overview
1-2
Cisco ONS 15540 ESPx Hardware Installation Guide
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Chapter 1 Product Overview
Figure 1-1 Cisco ONS 15540 ESPx Populated Shelf
Cisco ONS 15540 ESPx Chassis
1 2 3 4
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5
6
7
8
105701
1 Slots 0 and 1 hold the mu x/demux
5 Cable manageme nt tray
motherboards
2 Slots 2 to 5 hold line card motherboards 6 Cable storage drawer
3 Slots 6 and 7 hold the pr ocessor cards 7 Cross connect drawer
4 Slots 8 to 11 hold line card motherboards 8 Cross connect drawer
Cisco ONS 15540 ESPx Hardware Installation Guide
1-3
Cisco ONS 15540 ESPx Chassis
Fan Assembly
Chapter 1 Product Overview
The fan assembly is loc ated at th e botto m of the cha ssis and co ntain s eight
individual fans and a fan controller board. (See Figure 1-2.) The controller board
monitors the status of each fan and reports the status to the processor cards. If a
single fan fails, a m inor al ar m is re po rted to t he pr oc essor ca rd. If two or mo re
fans fail, a major alar m is reported to the processor car d. To prevent damage to the
cards and modules in the shelf when two or more fans fail, you can conf igure the
system to automaticall y reset or power off the transponde r module s. The
transponder module s p ower off if the hardwa re ver sio n of t he l ine car d
motherboard is 5.1 o r l at er, otherwis e th e t ransp onde r mo dule s r es et. Us e t he
show hardware command to determine the hardware version of the 2.5-Gbps line
card motherboards.
Figure 1-2 Fan Assembly
1-4
79724
To recover from fan failure shutdown, you must power-cycle the shelf.
Note Because the syste m doe s n ot k now which fans have failed, al l of the ca rds and
modules on the shelf are powered down or reset.
Caution The fan failure shutdown feature disrupts traffic on the shelf when two or more fans
fail.
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Chapter 1 Product Overview
Power Supplies
The optional external power supply i s a single- phase, AC-DC, 1050W, -48VDC
output power supply th at co nnec ts to the c hassis thr ough te rm inal bl ocks. T he
external power supply is installed in an external power shelf that fits into a
standard equipment rack. Up to three external power supplies can be installed in
the external power shelf.
See the “Po wering U p the S helf” s ectio n on pag e 2-40 for more informati on about
the power supplies.
Backplane
The Cisco ONS 15540 ESPx uses an electrical backplane. The power connectors
on the modules connect to the electrical backplane allowing line card
motherboards to draw u p to 10 0W of power. Optical connec tions be twee n
transponder modules on t he client side and the mux/demux modules on the trunk
side are made i n th e front .
The alarm signal s from t he proc essor ca rd are sent to the ala rm car d atta ched to
the bottom of the backpla ne. Th ey connect to th e centr al office alarm thr ough
connectors on the backplane.
Cisco ONS 15540 ESPx Chassis
Alarm Cards
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The alarm card has relays and terminal blocks to inter face the chassis to the Telco
Central Office alarm equipment . It is a sepa rate card that moun ts to the ba ck of
the chassis and connects to the backplane.
There are six relays on the alarm card. They are audible and visible with three
levels for each type:
• critical
• major
• minor
Each relay has two form C contacts. One is used to connect to the terminal block
and the outside. T he ot h er is u sed to pr ovide f eedb ack on the sta te of the rel ay.
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Cisco ONS 15540 ESPx Chassis
A processor card energizes t he rela ys by driving 3.3 volts to them. Only the
primary processor card drives the relays, however, each processor card can tell if
the relay is en erg ized by sensi n g th at t h e fe ed ba ck lin e i s gro und ed t hr ough the
second contact .
Table 1-1 lists the specifications for the alarm cards on the
Cisco ONS 15540 ESPx.
Table 1-1 Alarm Card Specifications
Connector Type Level Pin Contact Notes
P1 Visible Minor 1 C
2NC
3NO
Major 4 C
5NC
6NO
Critical 7 C
8NC
1
2
3
Each type and level of al arm is
signaled by a contact closure of
C to NO and an op en from C t o
NC.
Voltage at contacts is limited to
48 VDC.
Switched current / load is limit ed
to 1 A resistive.
Alarms are signaled when the
chassis is unpowered.
9NO
P2 Audible Minor 1 C
2NC
3NO
Major 4 C
5NC
6NO
Critical 7 C
8NC
9NO
1. C = center
2. NC = normally closed
3. NO = no rm all y op e n
Chapter 1 Product Overview
1-6
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