Page 2 - EC Declaration of Conformity
2 212257-B Copyright © 2002 Nortel Networks All rights reserved. January 2002. The information in this document is subject to change without notice. The statements, configurations, technical data, and recommendations in this document are believed to be accurate and reliable, but are presented withou...
Page 3 - Japan/Nippon requirements only; Voluntary Control Council for Interference (VCCI) statement; Taiwan requirements; Bureau of Standards, Metrology and Inspection (BSMI) Statement; Canada requirements only
3 Installation and Networking Guidelines for Optical Routing Japan/Nippon requirements only Voluntary Control Council for Interference (VCCI) statement Taiwan requirements Bureau of Standards, Metrology and Inspection (BSMI) Statement Canada requirements only Canadian Department of Communications Ra...
Page 4 - Nortel Networks Inc. software license agreement
4 212257-B Nortel Networks Inc. software license agreement NOTICE: Please carefully read this license agreement before copying or using the accompanying software or installing the hardware unit with pre-enabled software (each of which is referred to as “Software” in this Agreement). BY COPYING OR US...
Page 7 - Contents
7 Installation and Networking Guidelines for Optical Routing Contents Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Before you begin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
Page 9 - Figures
9 Installation and Networking Guidelines for Optical Routing Figures Figure 1 Wavelength division multiplexing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Figure 2 CWDM GBIC transceiver and label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Figure 3 CWDM OADM net...
Page 11 - Tables
11 Installation and Networking Guidelines for Optical Routing Tables Table 1 Parts of the optical routing system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Table 2 Assumptions used in calculating maximum transmission distance . . . . . 28 Table 3 Point-to-point signal loss values...
Page 13 - Preface; Connecting Gigabit Ethernet ports with fiber optic networks.
13 Installation and Networking Guidelines for Optical Routing Preface Nortel Networks* optical routing system supports high-speed data communications in metropolitan area networks (MANs) by: • Connecting Gigabit Ethernet ports with fiber optic networks. • Combining multiple wavelengths on a single f...
Page 14 - Before you begin; Basic knowledge of networks, and network hardware; Hard-copy technical manuals; URL to download a free copy of the Adobe Acrobat Reader.
14 Preface 212257-B Before you begin This guide is intended for network administrators who have the following background: • Basic knowledge of networks, and network hardware • Familiarity with networking concepts and terminology • Familiarity with Ethernet network administration and Fiber Channel ne...
Page 15 - How to get help
Preface 15 Installation and Networking Guidelines for Optical Routing How to get help If you purchased a service contract for your Nortel Networks product from a distributor or authorized reseller, contact the technical support staff for that distributor or reseller for assistance. If you purchased ...
Page 17 - Figure 1; Figure 1 Wavelength division multiplexing; This chapter includes the following topics:
17 Installation and Networking Guidelines for Optical Routing Chapter 1Describing the optical routing system Nortel Networks* optical routing system uses coarse wavelength division multiplexing (CWDM) in a grid of eight optical wavelengths. CWDM Gigabit Interface Converters (GBICs) in the switch tra...
Page 18 - Parts of the optical routing system; The optical routing system includes the following parts:; Gigabit interface converter description; Figure 2; Table 1 Parts of the optical routing system
18 Chapter 1 Describing the optical routing system 212257-B Parts of the optical routing system The optical routing system includes the following parts: • Gigabit interface converters (CWDM GBICs) • Optical add/drop multiplexers (CWDM OADMs) • Optical multiplexer/demultiplexers (CWDM OMUXs) • Optica...
Page 19 - Figure 2 CWDM GBIC transceiver and label; Optical add drop multiplexer description; Figure 3
Chapter 1 Describing the optical routing system 19 Installation and Networking Guidelines for Optical Routing Figure 2 CWDM GBIC transceiver and label For more information about CWDM GBICs, including specifications, see Installing CWDM Gigabit Interface Converters, part number 212256-B. Optical add ...
Page 20 - Figure 3 CWDM OADM network and equipment side connections; For information about installing a CWDM OADM, see; Network add/drop ring application; The wavelength of the CWDM OADM and the corresponding
20 Chapter 1 Describing the optical routing system 212257-B Figure 3 CWDM OADM network and equipment side connections The CWDM OADM ( Figure 4 ) is installed in a 19-inch, rack-mounted 1RU optical shelf ( Figure 15 ). Figure 4 CWDM OADM Front Panel For information about installing a CWDM OADM, see “...
Page 21 - Figure 5; Figure 5 CWDM OADM ring configuration example; “Calculating transmission distance,” on page 27; Optical multiplexer/demultiplexer description; Figure 6
Chapter 1 Describing the optical routing system 21 Installation and Networking Guidelines for Optical Routing Figure 5 shows an example of two separate fiber paths in a ring configuration traveling in opposite or east/west directions into the network. Figure 5 CWDM OADM ring configuration example Fo...
Page 22 - Figure 6 Four-channel CWDM OMUX front panel; Table 1; Figure 7 CWDM OMUX-4 network and equipment side connections; Figure 8
22 Chapter 1 Describing the optical routing system 212257-B Figure 6 Four-channel CWDM OMUX front panel Connectors with color-coded labels ( Table 1 ) simplify connection to color-coded CWDM GBICs in the switch. CWDM OMUX-4 Figure 7 shows the CWDM OMUX-4 version, with four CWDM GBIC equipment side c...
Page 23 - Figure 8 CWDM OMUX-8 network and equipment side connections; For information about installing a CWDM OMUX, see; CWDM OMUX in a point-to-point application; Figure 9
Chapter 1 Describing the optical routing system 23 Installation and Networking Guidelines for Optical Routing Figure 8 CWDM OMUX-8 network and equipment side connections For information about installing a CWDM OMUX, see “Inserting a CWDM OADM or a CWDM OMUX” on page 38 . For specifications, see “CWD...
Page 24 - CWDM OMUX; CWDM OMUX in a ring application; ). Two CWDM OMUXs are installed in the optical shelf at
24 Chapter 1 Describing the optical routing system 212257-B Figure 9 CWDM OMUX point-to-point configuration example For information about calculating network transmission distance, see Chapter 2, “Calculating transmission distance,” on page 27 . CWDM OMUX in a ring application CWDM OMUXs are also us...
Page 25 - Figure 10 CWDM OMUX ring configuration example
Chapter 1 Describing the optical routing system 25 Installation and Networking Guidelines for Optical Routing Figure 10 CWDM OMUX ring configuration example For information about calculating network transmission distance, see Chapter 2, “Calculating transmission distance,” on page 27 . OADM OMUX OMU...
Page 27 - About transmission distance and optical link budget; network devices the signal passes through
27 Installation and Networking Guidelines for Optical Routing Chapter 2Calculating transmission distance This chapter will help you determine the maximum transmission distance for your CWDM network configuration. This chapter includes the following topics: • “About transmission distance and optical ...
Page 28 - How to calculate expected loss budget; Identify all points where signal strength will be lost.; How to calculate maximum transmission distance; Assumptions; The examples assume use of the values and information listed in
28 Chapter 2 Calculating transmission distance 212257-B How to calculate expected loss budget To calculate the expected loss budget for a proposed network configuration: 1 Identify all points where signal strength will be lost. 2 Calculate the expected loss for each point. 3 Add the expected losses ...
Page 29 - Procedure; Figure 11 Point-to-point network configuration example
Chapter 2 Calculating transmission distance 29 Installation and Networking Guidelines for Optical Routing Procedure To calculate the maximum transmission distance for a proposed network configuration: 1 Identify all points where signal strength will be lost. 2 Calculate the expected loss for each po...
Page 30 - Table 3; Mesh ring transmission distance; Table 3 Point-to-point signal loss values; 9 dB Implied Fiber Loss
30 Chapter 2 Calculating transmission distance 212257-B Table 3 shows typical loss values that can be used to calculate the transmission distance for the point-to-point network in Figure 11 . Table 4 shows calculations used to determine maximum transmission distance for the point-to-point network ex...
Page 31 - ), the signal is expected to lose strength in the fiber; Figure 12 Mesh ring network configuration
Chapter 2 Calculating transmission distance 31 Installation and Networking Guidelines for Optical Routing As it passes from point A to point B (the most remote points in the mesh ring network example in Figure 12 ), the signal is expected to lose strength in the fiber optic cable, and in each connec...
Page 32 - Table 5; Table 5 Mesh ring signal loss values; Table 6 Mesh ring maximum transmission distance calculations
32 Chapter 2 Calculating transmission distance 212257-B Table 5 shows typical loss values that can be used to calculate the transmission distance for the mesh ring network example in Figure 12 . Table 6 shows the calculations used to determine maximum transmission distance for the mesh ring network ...
Page 33 - Hub and spoke transmission distance; Figure 13 Hub and spoke network configuration
Chapter 2 Calculating transmission distance 33 Installation and Networking Guidelines for Optical Routing Hub and spoke transmission distance Hub and Spoke topologies are the most complex. The characteristics of all components designed into the network must be considered in calculating transmission ...
Page 34 - Table 7; Table 7 Hub and spoke signal loss values; dB Passive Loss
34 Chapter 2 Calculating transmission distance 212257-B Table 7 shows typical loss values that can be used to calculate the transmission distance for the hub and spoke network in Figure 13 . Table 8 shows the calculations used to determine maximum transmission distance for the hub and spoke network ...
Page 35 - Preparing for installation; Exceeding class 1 power level warning; appears on
35 Installation and Networking Guidelines for Optical Routing Chapter 3Installing the shelf, OADM, and OMUX The shelf and multiplexers are passive equipment and require no power or electronic This chapter describes how to install optical routing components, and includes the following topics. • “Prep...
Page 36 - Figure 14 Class 1M laser warning; Environmental and physical requirements; Do not touch anyone who is not grounded.
36 Chapter 3 Installing the shelf, OADM, and OMUX 212257-B Figure 14 Class 1M laser warning Environmental and physical requirements The optical routing system is mounted in an optical shelf with connections at the front of the module. For user access to these connections, a minimum of 36 inches (90 ...
Page 37 - Installing the shelf; To install the optical shelf (
Chapter 3 Installing the shelf, OADM, and OMUX 37 Installation and Networking Guidelines for Optical Routing • Clear the area of synthetic materials such as polyester, plastic, vinyl, or styrofoam because these materials carry static electricity that damages the equipment. Installing the shelf To in...
Page 38 - Figure 15 Shelf with plug-in module in 19-inch rack; Inserting a CWDM OADM or a CWDM OMUX; connect them into your network.
38 Chapter 3 Installing the shelf, OADM, and OMUX 212257-B Figure 15 Shelf with plug-in module in 19-inch rack Inserting a CWDM OADM or a CWDM OMUX CWDM OADMs and CWDM OMUXs are passive devices that require no power for their operation. You can insert them in the optical shelf ( Figure 15 ) and then...
Page 39 - Cabling a CWDM OADM or a CWDM OMUX; Cabling a CWDM OADM
Chapter 3 Installing the shelf, OADM, and OMUX 39 Installation and Networking Guidelines for Optical Routing To insert a CWDM OADM or a CWDM OMUX in the optical shelf: 1 Align the plug-in module with the optical shelf. 2 Gently push the plug-in module into the shelf cavity. 3 Tighten the captive scr...
Page 40 - Clean all fiber optic connectors on the cabling (see; Figure 16 Cabling a CWDM OADM
40 Chapter 3 Installing the shelf, OADM, and OMUX 212257-B 2 Insert the wavelength-specific CWDM GBICs into their respective network device(s). To install a CWDM GBIC, see Installing CWDM Gigabit Interface Converters, part number 212256-B. 3 Clean all fiber optic connectors on the cabling (see “Hand...
Page 41 - Cabling a four-channel CWDM OMUX; This section describes how to cable the following:; Figure 17 Cabling a CWDM OMUX-4
Chapter 3 Installing the shelf, OADM, and OMUX 41 Installation and Networking Guidelines for Optical Routing Cabling a four-channel CWDM OMUX This section describes how to cable the following: • CWDM GBIC to a CWDM OMUX-4 ( Figure 17 ) • CWDM OMUX-4 to west and east network backbone interfaces ( Fig...
Page 42 - Cabling an eight-channel CWDM OMUX; “Handling and cleaning
42 Chapter 3 Installing the shelf, OADM, and OMUX 212257-B 4 Make the following network backbone connections ( Figure 17 ): • Connect the network backbone east fiber optic cables to the east (left) CWDM OMUX-4. • Connect the network backbone west fiber optic cables to the west (right) CWDM OMUX-4. C...
Page 43 - Make the following network backbone connections (; Figure 18 Cabling an
Chapter 3 Installing the shelf, OADM, and OMUX 43 Installation and Networking Guidelines for Optical Routing 4 Make the following network backbone connections ( Figure 18 ): • Connect the network backbone east fiber optic cables to the east (left) CWDM OMUX-8. • Connect the network backbone west fib...
Page 44 - Removing a CWDM OADM or a CWDM OMUX; disconnecting them from your network.
44 Chapter 3 Installing the shelf, OADM, and OMUX 212257-B Removing a CWDM OADM or a CWDM OMUX CWDM OADMs and CWDM OMUXs are passive devices that require no power for their operation. You can remove them from the optical shelf ( Figure 15 ) after disconnecting them from your network. To remove a CWD...
Page 45 - Table 9 CWDM OADM specifications
45 Installation and Networking Guidelines for Optical Routing Appendix ACWDM OADM specifications Table 9 CWDM OADM specifications Item Specification Physical Dimensions Plug-in Module SizeRack Mount 8.35” x 1.7" x 10.4"1RU Connectors Network Side Equipment Side 2 dual SC/PC2 dual SC/PC Cabli...
Page 47 - Appendix B; CWDM OMUX specifications; Table 10 CWDM OMUX specifications
47 Installation and Networking Guidelines for Optical Routing Appendix B CWDM OMUX specifications Table 10 CWDM OMUX specifications Item Specification Physical Dimensions Plug-in Module SizeRack Mount 8.35” x 1.75" x 8.7"1RU Connectors Network Side Equipment Side OMUX-41 dual SC/PC4 dual SC/...
Page 49 - Precautions; Do not stand on fiber optic cable and keep the cable off the floor.
49 Installation and Networking Guidelines for Optical Routing Appendix CHandling and cleaning fiber optic equipment Precautions Although the glass optical path of fiber optic cable is protected with reinforcing material and plastic insulation, it is subject to damage. Use the following precautions t...
Page 50 - Tools and Materials; “Cleaning Single SC and FC Connectors” next
50 Appendix C Handling and cleaning fiber optic equipment 212257-B Frequent overstressing of fiber optic cable causes progressive degeneration that leads to failure. If you suspect damage to a fiber optic cable, either due to mishandling or an abnormally high error rate observed in one direction, re...
Page 51 - Cleaning Single SC and FC Connectors
Appendix C Handling and cleaning fiber optic equipment 51 Installation and Networking Guidelines for Optical Routing Before connecting them to transmission equipment, test equipment, patch panels, or other connectors, clean all fiber optic connectors. The performance of an optical fiber connector de...
Page 52 - Cleaning Duplex SC Connectors; To clean duplex connectors:
52 Appendix C Handling and cleaning fiber optic equipment 212257-B 4 Dry the connector surfaces by applying canned air or letting them air dry. Cleaning Duplex SC Connectors To clean duplex connectors: 1 To remove or retract the shroud, do one of the following. • On removable shroud connectors, hold...
Page 53 - Cleaning Receptacle or Duplex Devices
Appendix C Handling and cleaning fiber optic equipment 53 Installation and Networking Guidelines for Optical Routing Cleaning Receptacle or Duplex Devices To clean receptacle or duplex devices: 1 Remove dust or debris by blowing canned air into the optical port of the device using the canned air ext...
Page 55 - Glossary; signal loss between two points
55 Installation and Networking Guidelines for Optical Routing Glossary attenuation The decrease in signal strength in an optical fiber caused by absorption and scattering. Attenuation can be calculated to express • signal loss between two points • total signal loss of a telecommunications system or ...
Page 56 - compact disc read-only memory
56 Glossary 212257-B CD-ROM compact disc read-only memory A compact disc with pre-recorded data, normally used in large database-type applications such as directory, reference, or data retrieval. channel A communications path or the signal sent over that path. By multiplexing several channels, voice...
Page 57 - dense wavelength division multiplexing
Glossary 57 Installation and Networking Guidelines for Optical Routing demultiplexing The separating of different wavelengths in a wavelength-division multiplexing system. The opposite of multiplexing. dispersion The broadening of input pulses as they travel the length of an optical fiber. There are...
Page 59 - A group of circuits connected at one point on a network.
Glossary 59 Installation and Networking Guidelines for Optical Routing hub A group of circuits connected at one point on a network. insertion loss In an optical fiber system, the total optical power loss caused by insertion of an optical component, such as a connector, splice, or coupler. Usually gi...
Page 60 - metropolitan area network
60 Glossary 212257-B loss budget The amount of optical power launched into a system that will be lost through various mechanisms, such as insertion losses and fiber attenuation. Usually given in dB. MAN metropolitan area network A MAN consists of LANs interconnected within a radius of approximately ...
Page 62 - optical carrier - level 1; optical multiplexer; An optical wavelength band for WDM optical communications.
62 Glossary 212257-B each signal level thereafter operates at a speed divisible by that number. For example, OC-3 operates at 155.52 Mbit/s. OC-1 optical carrier - level 1 An optical SONET signal at 51.84 Mbit/s. OC-3 optical carrier - level 3 An optical SONET signal at 155.52 Mbit/s. OC-12 optical ...
Page 63 - A device that does not require a source of energy to function.
Glossary 63 Installation and Networking Guidelines for Optical Routing optical waveguide See optical fiber. passive device A device that does not require a source of energy to function. passthrough A signal bypass mechanism that allows the signal to pass through a device with little or no signal pro...
Page 64 - transmit; wide area network
64 Glossary 212257-B single-mode fiber See SMF. SMF A mode is one of the various light waves that can be transmitted in an optical fiber. Each optical signal generates many different modes, but in single-mode fiber the aim is to only have one of them transmitted. This is achieved through having a co...
Page 65 - wavelength division multiplexing
Glossary 65 Installation and Networking Guidelines for Optical Routing WDM wavelength division multiplexing Transmitting many different colors (wavelengths) of laser light down the same optical fiber at the same time in order to increase the amount of information that can be transferred.
Page 67 - Index
Installation and Networking Guidelines for Optical Routing 67 Index A add/drop mux connecting cables 39description 19insert in shelf 38remove from shelf 44ring application 20specifications 45 application point-to-point, mux/demux 23ring, add/drop mux 20ring, mux/demux 24 attenuation 27 B block diagr...
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