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Cisco 12000 Series Routers

Fiber Loss Budgets

Cisco - Fiber Loss Budgets

Introduction

This document provides the optical transmit power and receive sensitivity for fiber optic connectors on various router and switch interfaces. These numbers can be used in the calculations explained in the "Evaluating the Power Budget" section of the ATM Interface Processor (AIP) documentation. (When you view the AIP documentation, use your browser's "Find" feature to locate the desired section of the document.)

Note: The AIP documentation uses the terms PT (minimum transmitter power) and PR (minimum receiver sensitivity). In this document, the "transmit dBm min" column equals PT and the "receive dBm min" column equals PR.

Prerequisites

Requirements

There are no specific requirements for this document.

Components Used

This document is not restricted to specific software and hardware versions.

The information in this document was created from the devices in a specific lab environment. All of the devices used in this document started with a cleared (default) configuration. If your network is live, make sure that you understand the potential impact of any command.

Conventions

For more information on document conventions, refer to the Cisco Technical Tips Conventions.

Optical Transmit Power and Receive Sensitivity for Fiber Optic Connectors Table

Standard Fiber Transmit (dBm) Receive (dBm) Distance Objective
max min max min km mi
ISO/IEC 9314-3 MM -14 -20 -14 -31 2 1.2
SM cat I -14 -20 -14 -31 14 8.4
SM cat II 0 -4 -15 -37 58 34.8
Device Fiber Type Connector Transmit (dBm) Receive (dBm) Distance Objective
max min max min km mi
Catalyst 1900c, Catalyst 2820 MM 100BaseFX SC -14 -19 -14 -33.5    
Catalyst 3000 SM OC-3 SC -8 -14 -8 -32.5 10 6.2
MM OC-3 SC            
MM 100BaseF SC         full-duplex 2; half-duplex 0.4 full-duplex 1.2; half-duplex 0.24
MM 10BaseF SC         2 1.2
MM 100VG SC            
Catalyst 5000 Catalyst 2900 (non-XL) Catalyst 2926 MM 10baseFL ST -12 -20 -12 -32.5 2 1.2
SM OC-3 SC -8 -14 -8 -32.5 30 18
MM OC-3 SC -14 -19 -14 -32.5 2 1.2
SM FDDI ST -4 -7 -14 -33 30 18
MM FDDI MIC -14 -18.5 -14 -34 2 1.2
Cisco 1100 concentrator Cisco 1400 concentrator SM FDDI ST -4 -7 -14 -33 30 18
MM FDDI MIC -14 -18.5 -14 -34 2 1.2
Cisco 4000 NPs SM FDDI MIC -14 -20 -14 -31 10 6.2
MM FDDI MIC -10 -16 -10 -27 2 1.2
SM OC-3 SC -8 -18.5 -14 -30 15 9
SM LR OC-3 SC   -3   -36 20 12.4
MM OC-3 SC   -15   -28 3 1.5
AIP SM OC-3 ST -8 -15 -14 -31 14.8 9
MM OC-3 SC -14 -20 -14 -30 2.4 1.5
SM TAXI ST -14 -20 -14 -31    
MM TAXI MIC -10 -16 -10 -27 2 1.2
FDDI Interface Processor (FIP) AGS+ FDDI applique SM FDDI ST -14 -20 -14 -31 10 6.2
MM FDDI MIC -10 -16 -10 -27 2 1.2
ATM Port Adapters (PAs) (ATM lite) SM OC-3 SC -8 -15 -8 -31    
MM OC-3 SC -14 -20 -14 -30    
Fast Ethernet PA MM FE SC            
FDDI PA SM FDDI SC -14 -19 -14 -31 15 9.3
MM FDDI MIC -14 -19 -14 -31 2 1.2
Packet OC-3 Interface Processor (POSIP) SM IR OC-3 SC -8 -15 -8 -31 15 9
MM OC-3 SC -14 -18.5 -14 -30 3 1.5
Cisco 12000 SM IR OC-3 SC -8 -15 -8 -28 15 9.3
MM OC-3 SC -14 -20 -14 -26 0.5 0.3
SM IR OC-3 SC -8 -15 -8 -31 15 9.3
MM OC-3 SC -14 -20 -14 -26 0.5 0.3
LightStream 100 ATM switch 155-Mbps SM OC-3C SC -8 -15 0 -34    
155-Mbps MM OC-3C SC            
100-Mbps MM TAXI MIC            
LightStream 1010 ATM switch SM IR OC-3 SC -8 -15 -8 -30 15 9
SM IR+ OC-3 SC -3 -8 -3 -32 30 18
SM LR OC-3 SC 0 -5 -10 -30 40 25
MM OC-3 SC -14 -20 -14 -30 2 1.2
SM IR OC-12 SC -8 -15 -8 -28 15 9
SM LR OC-12 SC 2 -3 -8 -28 40 25
MM OC-12 SC -14 -20 -14 -26 0.5 0.3
Catalyst 8540MSR ATM switch SM IR OC-12 SC -8 -14 -3 -28 15 9
MM OC-12 SC -14 -20 -14 -26 0.5 0.3
HP Gigabit Ethernet Converters (GBIC) HFBR-5601 Cisco Field-replaceable unit (FRU) WS-G5484 62.5/125um MM SR 1000Base-SX SC -4 -10 0 -17 220/275 meters 720/900 feet
50/125um MM SR 1000Base-SX SC -4 -10 0 -17 550 meters 1800 feet
HP GBIC HFCT-5611 1 Cisco FRU WS-G5486 62.5um MM LR 1000Base-LX/LH SC -3 -9.5 -3 -19 550 meters 1800 feet
50um MM LR 1000Base-LX/LH SC -3 -9.5 -3 -19 550 meters 1800 feet
9/125um SM LR 1000Base-LX/LH SC -3 -9 -3 -19 10 6
Catalyst 8510 MM 100BaseFX SC -8 -15 -8 -28 .5 1640 feet
Catalyst 8540 MM 100BaseFX MT-RJ -8 -15 -8 -28 .5 1640 feet

Note: 

1 All GBICs use Class 1 lasers, even with multimode fiber. A Mode Conditioning Cable (MCC) is required when using multimode fiber with any LX/LH GBIC. All of these GBICs have a minimum cable length of two meters.

Related Information

Updated: Jan 15, 2008
Document ID: 12221