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4.1 Basic Concepts

Appearance and Structure

shows the appearance of an optical module.

Figure 4-1

Appearance of an optical module

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1. Handle

2. Receiver

3. Transmitter

4. Shell

5. Label

6. Dust cap

7. Spring

8. Module connector

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S2750 Series Ethernet Switches
Hardware Description

4 Optical Module

Issue 04 (2014-03-20)

Huawei Proprietary and Confidential

Copyright © Huawei Technologies Co., Ltd.

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Summary of Contents for S2750

Page 1: ...S2750 Series Ethernet Switches Hardware Description Issue 04 Date 2014 03 20 HUAWEI TECHNOLOGIES CO LTD ...

Page 2: ...t may not be within the purchase scope or the usage scope Unless otherwise specified in the contract all statements information and recommendations in this document are provided AS IS without warranties guarantees or representations of any kind either express or implied The information in this document is subject to change without notice Every effort has been made in the preparation of this docume...

Page 3: ... imminently hazardous situation which if not avoided will result in death or serious injury Indicates a potentially hazardous situation which if not avoided could result in death or serious injury Indicates a potentially hazardous situation which if not avoided may result in minor or moderate injury Indicates a potentially hazardous situation which if not avoided could result in equipment damage d...

Page 4: ...s One item is selected or no item is selected x y Optional items are grouped in braces and separated by vertical bars A minimum of one item or a maximum of all items can be selected x y Optional items are grouped in brackets and separated by vertical bars Several items or no item can be selected 1 n The parameter before the sign can be repeated 1 to n times A line starting with the sign is comment...

Page 5: ...le Changes in Issue 02 2013 07 25 This version has the following updates The following information is modified l 4 Optical Module Changes in Issue 01 2013 05 30 Initial commercial release S2750 Series Ethernet Switches Hardware Description About This Document Issue 04 2014 03 20 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd iv ...

Page 6: ...3 3 Indicator Description 10 2 3 4 Port Description 18 2 3 5 Power Supply Configuration 21 2 3 6 Heat Dissipation 22 2 3 7 Specifications 22 3 Cables 26 3 1 Ground Cable 27 3 2 Optical Fiber 27 3 3 Network Cable 32 3 4 AC Power Cable 34 3 5 Console Cable 35 3 6 High Speed Cable 36 4 Optical Module 39 4 1 Basic Concepts 40 4 2 SFP eSFP Modules 42 S2750 Series Ethernet Switches Hardware Description ...

Page 7: ...etails contact the product manager of Huawei local office l The figures in this document are for reference only 1 1 Components Available in V200R003C00 Version 1 2 Components Available in V200R005C00 Version S2750 Series Ethernet Switches Hardware Description 1 Version Support for Components Issue 04 2014 03 20 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 1 ...

Page 8: ...28 total 24 Ethernet 10 100 PoE ports 2 Gig SFP and 2 combo 10 100 1000 or SFP S2751 28TP PWR EI AC 28 total 12 Ethernet 10 100 PoE ports 12 Ethernet 10 100 ports 2 Gig SFP and 2 combo 10 100 1000 or SFP 1 2 Components Available in V200R005C00 Version Available Models Table 1 2 lists the switch models available in V200R005C00 Table 1 2 Switch models available in V200R005C00 Series Model Maximum Nu...

Page 9: ...Ethernet 10 100 PoE ports 2 Gig SFP and 2 combo 10 100 1000 or SFP S2751 28TP PWR EI AC 28 total 12 Ethernet 10 100 PoE ports 12 Ethernet 10 100 ports 2 Gig SFP and 2 combo 10 100 1000 or SFP S2750 Series Ethernet Switches Hardware Description 1 Version Support for Components Issue 04 2014 03 20 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 3 ...

Page 10: ...Chapter 2 1 Chassis Overview 2 2 Naming Conventions 2 3 S2750 EI S2750 Series Ethernet Switches Hardware Description 2 Chassis Issue 04 2014 03 20 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 4 ...

Page 11: ...AC and S2751 28TP PWR EI AC 2 2 Naming Conventions Figure 2 1 shows the switch naming conventions Figure 2 1 Switch naming conventions S2750 20TP PWR EI AC ABC D E F G H I Table 2 1 explains the switch naming conventions Table 2 1 Switch naming convention description Ide ntifi er Description A Switch B l 6 10GE downlink ports l 5 GE downlink ports l 3 Layer 3 switch with 100M downlink ports l 2 La...

Page 12: ...on administration and maintenance OAM and built in real time clock RTC I Powering mode l AC alternating current power l DC direct current power 2 3 S2750 EI 2 3 1 Version Mapping Table 2 2 lists the mapping between the S2750 EI series switches and software versions Table 2 2 Matching between the S2750 EI series switches and software versions Device Series Device Model Available Version S2750 EI S2...

Page 13: ...DM optical module l GE DWDM optical module l GE SFP copper module l Stack optical module l 1 m 3 m 10 m SFP copper cables l 3 m 10 m AOC cables 3 Two combo ports 10 100 1000BASE T 100 1000BASE X Modules applicable to combo optical ports l FE optical module l GE optical module l GE CWDM optical module l GE DWDM optical module 4 One console port 5 Ground screw NOTE It is used with a ground cable 6 A...

Page 14: ... l GE CWDM optical module l GE DWDM optical module l GE SFP copper module l Stack optical module l 1 m 3 m 10 m SFP copper cables l 3 m 10 m AOC cables 3 Two combo ports 10 100 1000BASE T 100 1000BASE X Modules applicable to combo optical ports l FE optical module l GE optical module l GE CWDM optical module l GE DWDM optical module 4 One console port 5 Ground screw NOTE It is used with a ground c...

Page 15: ...ical module l GE DWDM optical module l GE SFP copper module l Stack optical module l 1 m 3 m 10 m SFP copper cables l 3 m 10 m AOC cables 3 Two combo ports 10 100 1000BASE T 100 1000BASE X Modules applicable to combo optical ports l FE optical module l GE optical module l GE CWDM optical module l GE DWDM optical module 4 One console port 5 Ground screw NOTE It is used with a ground cable 6 Jack re...

Page 16: ...le l Stack optical module l 1 m 3 m 10 m SFP copper cables l 3 m 10 m AOC cables 4 Two combo ports 10 100 1000BASE T 100 1000BASE X Modules applicable to combo optical ports l FE optical module l GE optical module l GE CWDM optical module l GE DWDM optical module 5 One console port 6 Ground screw NOTE It is used with a ground cable 7 Jack reserved for AC terminal locking latch NOTE The AC terminal...

Page 17: ...3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 3 4 1 2 MODE STCK STAT SYS PWR HUAWEI S2750 28TP EI AC 1G STACK 2 5G 1G 1G CONSOLE 1 6 5 2 4 3 1 2 3 4 5 6 7 8 MODE STCK STAT SYS PWR HUAWEI S2750 28TP EI AC 1 5 2 4 3 19 20 21 22 23 24 1 2 1G STACK 2 5G 6 Table 2 4 Description of indicators on the S2750 28TP EI AC Numbe r Indicator Button Color Description 1 PWR power supply indicator Off...

Page 18: ...tandby or slave state or the stacking function is not enabled on the switch l Blinking The switch is a stack master switch or a standalone switch with the stacking function enabled If you are changing the indicator mode l Off The stack mode is not selected l Steady on The switch is a standby or slave switch in a stack and the service port indicators show the stack ID of the switch l Blinking The s...

Page 19: ...seconds the service port indicators restore to the default mode In this case the STAT indicator is steady green and the STCK indicator is off or blinking green 6 Service port indicator l FE electrical ports The ports are numbered from bottom to top and left to right starting with 1 l GE ports Each GE port has an indicator above it Meanings of service port indicators vary in different modes For det...

Page 20: ...powered off Green Steady on The system power supply is normal 2 SYS system status indicator Off The system is not running Green l Fast blinking The system is starting l Slow blinking The system is running properly Red Steady on After registering the system does not operate properly or a fan or temperature alarm has been generated 3 STAT status indicator Off The status mode is not selected Green St...

Page 21: ...ck and the service port indicators show the stack ID of the switch l Blinking The switch is the master switch in a stack or a standalone switch and the service port indicators show the stack ID of the master switch After 45 seconds the service port indicators automatically restore to status mode 5 PoE PoE mode indicator Off The PoE mode is not selected Green Steady on The service port indicators s...

Page 22: ...to the default mode In this case the STAT indicator is steady green the PoE indicator is off and the STCK indicator is off or blinking green 7 Service port indicator l FE electrical ports The ports are numbered from bottom to top and left to right starting with 1 l GE ports Each GE port has an indicator above it Meanings of service port indicators vary in different modes For details see Table 2 6 ...

Page 23: ...ted to the port Green and yellow Blinking green and yellow alternately The port cannot provide power to a PD The possible reasons include l The power of the PD exceeds the maximum power or power threshold of the port l The total power consumption of PDs has reached the maximum power of the switch l The manual power management mode is used and the port is not enabled to provide power to the PD Stac...

Page 24: ...l port sends and receives service data at 10 100 Mbit s and must use 3 3 Network Cable Table 2 7 lists the attributes of a 10 100BASE TX Ethernet electrical port Table 2 7 Attributes of a 10 100BASE TX Ethernet electrical port Attribute Item Connector type RJ45 Standards compliance IEEE802 3 IEEE802 3u IEEE802 3ab Electrical port attributes MDI MDIX NOTE l A medium dependent interface MDI provides...

Page 25: ...mined as follows l If the optical port has no optical module installed and the electrical port has no network cable connected the port type depends on which port is connected first If the electrical port is connected by a network cable first the electrical port is used for data switching If the optical port has an optical module installed first the optical port is used for data switching l If the ...

Page 26: ...ribute Item Connector type RJ45 Standards compliance RS 232 Working mode Full duplex universal asynchronous receiver transmitter UART Baud rate 9600 bit s to 115200 bit s The default value is 9600 bit s JTAG port Figure 2 8 shows the JTAG port The JTAG port is an internal port of the switch and is used to check and diagnose equipment faults Figure 2 8 JTAG port S2750 Series Ethernet Switches Hardw...

Page 27: ... is transmitted to the PWR module on the switch the PWR module provides a channel of 12 V voltage and a channel of 53 V voltage The 12 V voltage is provided for the entire device and the 53 V voltage is provided for the PDs Figure 2 9 PoE power supply by AC power modules Motherboard GND 12V PWR L N PGND 53V RTN L Live wire N Neutral wire PGND Protective ground wire GND 12 V reference ground RTN 53...

Page 28: ...on Method l S2750 28TP EI AC l S2751 28TP PWR EI AC Natural heat dissipation l S2750 20TP PWR EI AC l S2750 28TP PWR EI AC Forcible heat dissipation The air flows in from the left and flows out from the right MODE 2 CONSOLE 3 4 Cold air Hot air 2 3 7 Specifications Table 2 11 lists specifications of the S2750 EI series switches Table 2 11 Specifications of the S2750 EI Item Description DDR memory ...

Page 29: ...S2751 28TP PWR EI AC 2kV in differential mode 4kV in common mode Dimensions W x D x H l S2750 28TP EI AC 442 0 mm x 220 0 mm x 43 6 mm l S2750 20TP PWR EI AC 442 0 mm x 310 0 mm x 43 6 mm l S2750 28TP PWR EI AC 442 0 mm x 310 0 mm x 43 6 mm l S2751 28TP PWR EI AC 442 0 mm x 310 0 mm x 43 6 mm Weight 5 kg Stack port Two uplink 1000BASE X optical ports Maximum stack bandwidth bidirectional 10 Gbit s...

Page 30: ...50 28TP EI AC 0 The device has no fans l S2750 20TP PWR EI AC less than 52 dBA l S2750 28TP PWR EI AC less than 52 dBA l S2751 28TP PWR EI AC 0 The device has no fans Relative humidity 5 RH to 95 RH noncondensing Operating altitude l S2750 28TP EI AC 0 m to 5000 m l S2750 20TP PWR EI AC 0 m to 5000 m l S2750 28TP PWR EI AC 0 m to 5000 m l S2751 28TP PWR EI AC 0 m to 2000 m EMC standards compliance...

Page 31: ...0950 1 l CSA C22 2 No 60950 1 l AS NZS 60950 1 Laser safety standards compliance l IEC60825 1 l IEC60825 2 l EN60825 1 l EN60825 2 S2750 Series Ethernet Switches Hardware Description 2 Chassis Issue 04 2014 03 20 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 25 ...

Page 32: ...2 Optical Fiber 3 3 Network Cable 3 4 AC Power Cable 3 5 Console Cable 3 6 High Speed Cable S2750 Series Ethernet Switches Hardware Description 3 Cables Issue 04 2014 03 20 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 26 ...

Page 33: ...n One end of the ground cable connects to the ground screw on the switch chassis and the other end connects to the ground point on the cabinet or ground bar 3 2 Optical Fiber Active Optical Cable An active optical cable AOC is an optical fiber with optical modules at both ends AOC cables are easy to use Figure 3 2 shows the appearance of an AOC cable S2750 Series Ethernet Switches Hardware Descrip...

Page 34: ...30 mm Fiber Jumper A fiber jumper consists of a length of a single fiber or multiple fibers with optical connectors at both ends The fiber jumper is a fiber patch cable that connects an optical module to a fiber terminal box Figure 3 3 shows the appearance of a single mode LC PC fiber jumper S2750 Series Ethernet Switches Hardware Description 3 Cables Issue 04 2014 03 20 Huawei Proprietary and Con...

Page 35: ...ode LC PC fiber jumper Figure 3 4 Appearance of amultimode LC PC fiber jumper Figure 3 5 shows the appearance of a single mode SC PC fiber jumper S2750 Series Ethernet Switches Hardware Description 3 Cables Issue 04 2014 03 20 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 29 ...

Page 36: ...re that the optical connector at each end of a fiber jumper is the same type as the interface connected Fiber Pigtail A fiber pigtail is an optical fiber that has an optical connector on one end and a length of exposed fiber at the other end The exposed fiber can be fused to another optical fiber Fiber pigtails are commonly used to connect optical fibers to optical fiber modules in fiber terminal ...

Page 37: ...e 3 3 l Multimode fibers have a diameter of 50 um or 62 5 um and transmit laser light in multiple modes with a specified wavelength These fibers have a lower transmission capacity than single mode fibers and are used for short distance transmission Most multimode fibers are orange as shown in Figure 3 4 Optical Connector Optical connectors are used to connect optical fibers of the same type Table ...

Page 38: ...onsole port on the main control board for local or remote maintenance Network cables are classified into straight through cables and crossover cables l A straight through cable connects a terminal such as a computer or switch to the network The straight through cable uses two RJ45 connectors which have the same pinout l A crossover cable connects two terminals such as computers or switches The cro...

Page 39: ...gure 3 8 Structure of a network cable X1 8 1 Main lable X2 Pin Assignments Table 3 3 shows the pin assignments of a straight through cable S2750 Series Ethernet Switches Hardware Description 3 Cables Issue 04 2014 03 20 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 33 ...

Page 40: ... Pin 1 White and orange 3 2 Orange 6 3 White and green 1 4 Blue 4 5 White and blue 5 6 Green 2 7 White and brown 7 8 Brown 8 NOTE To achieve the best electrical transmission performance ensure that the wires connected to pins 1 and 2 and to pins 3 and 6 are twisted pairs 3 4 AC Power Cable Appearance and Structure Figure 3 9 shows the appearance of an AC power cable S2750 Series Ethernet Switches ...

Page 41: ... chassis and cannot be used on other devices Connection An AC power cable connects to the following l An AC power input port on the device l The mains supply 3 5 Console Cable Appearance and Structure Figure 3 10 and Figure 3 11 show the appearance and structure of a console cable Figure 3 10 Appearance of a console cable S2750 Series Ethernet Switches Hardware Description 3 Cables Issue 04 2014 0...

Page 42: ... is inserted into the console port of the device l The DB9 connector is inserted into the terminal serial port 3 6 High Speed Cable Types of High Speed Cables Table 3 5 shows the types of high speed cables Table 3 5 Types of high speed cables Model Length Electrical attribute Bend Radius Connector Type SFP 10G CU1M 1 m Passive 25 mm SFP SFP 10G CU3M 3 m Passive 25 mm SFP SFP 10G AC10M 10 m Active ...

Page 43: ... of an SFP high speed cable Figure 3 13 Structure of an SFP high speed cable X1 X2 Stack Description In addition to data transmission high speed cables can be used for stack connection as described in Table 3 6 S2750 Series Ethernet Switches Hardware Description 3 Cables Issue 04 2014 03 20 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 37 ...

Page 44: ...SFP copper cable l 3 m passive SFP copper cable l 10 m active SFP copper cable l 3 m 10 m AOC cables l 6GE stack optical module SFP 6GE LR and optical fiber 2 5 Gbit s Any models of the S2750 EI series can set up a stack S2750 Series Ethernet Switches Hardware Description 3 Cables Issue 04 2014 03 20 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 38 ...

Page 45: ...ei switches Non certified optical modules cannot ensure transmission reliability and may affect service stability on the switch Huawei is not responsible for any problem caused by non certified optical modules and will not fix such problems l All the optical modules listed in the documentation are Huawei certified optical modules 4 1 Basic Concepts 4 2 SFP eSFP Modules S2750 Series Ethernet Switch...

Page 46: ...4 1 Appearance of an optical module 1 3 2 4 5 8 7 6 1 Handle 2 Receiver 3 Transmitter 4 Shell 5 Label 6 Dust cap 7 Spring 8 Module connector S2750 Series Ethernet Switches Hardware Description 4 Optical Module Issue 04 2014 03 20 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 40 ...

Page 47: ...tances due to negative effects of optical fibers such as dispersion and attenuation Interface rate Maximum rate of electrical signals that an optical device can transmit without bit errors Various interface rates are defined in Ethernet standards such as 125 Mbit s 1 25 Gbit s 10 3125 Gbit s and 41 25 Gbit s Center wavelength Wavelength measured at the midpoint of the half amplitude line in the tr...

Page 48: ...FP SFP and XFP modules MPO applicable to some of QSFP modules and SC Transmit optical power Output optical power of an optical module when it is working properly Maximum receiver sensitivity Minimum average input optical power that the receiver of an optical module can receive within a range of bit error rate BER 10 12 Overload optical power Maximum average input optical power that the receiver of...

Page 49: ...Appearance of a GE SFP copper module FE Optical Module Table 4 2 and Table 4 3 list the attributes of an FE optical module S2750 Series Ethernet Switches Hardware Description 4 Optical Module Issue 04 2014 03 20 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 43 ...

Page 50: ...X SM1310 15 100base LX l Fiber mode single mode l Connector type LC S SFP FE LH40 SM1310 40 100base LX S SFP FE LH80 SM1550 80 100base LX SFP FE LX SM1310 BIDI Bidirectional optical module 15 100base BX SFP FE LX SM1550 BIDI Bidirectional optical module 15 100base BX S2750 Series Ethernet Switches Hardware Description 4 Optical Module Issue 04 2014 03 20 Huawei Proprietary and Confidential Copyrig...

Page 51: ...15 0 to 8 0 32 0 8 0 8 5 SFP FE LX SM1550 BIDI Bidirectional optical module TX1550 RX1310 15 0 to 8 0 32 0 8 0 8 5 GE Optical Module Table 4 4 and Table 4 5 list the attributes of a GE optical module Table 4 4 Attributes of GE optical modules Model Transmiss ion Distance km Standard Fiber Type eSFP GE SX MM850 0 22 1000base SX l Fiber mode multimode l Pattern bandwidth 160 MHz km l Core diameter 6...

Page 52: ... LH40 SM1550 40 1000base LX LH S SFP GE LH80 SM1550 80 1000base ZX eSFP GE ZX100 SM1550 100 1000base ZX SFP GE LX SM1310 BIDI Bidirectional optical module 10 1000base BX SFP GE LX SM1490 BIDI Bidirectional optical module 10 1000base BX LE2MGSC40DE0 Bidirectional optical module 40 1000base BX LE2MGSC40ED0 Bidirectional optical module 40 1000base BX SFP GE BXU1 SC Bidirectional optical module 10 100...

Page 53: ...irectional optical module RX1490 TX1310 9 0 to 3 0 19 5 3 0 6 SFP GE LX SM1490 BIDI Bidirectional optical module RX1310 TX1490 9 0 to 3 0 19 5 3 0 6 LE2MGSC40DE0 Bidirectional optical module RX1490 TX1310 2 0 to 3 0 23 3 0 9 LE2MGSC40ED0 Bidirectional optical module RX1310 TX1490 2 0 to 3 0 23 3 0 9 SFP GE BXU1 SC Bidirectional optical module RX1310 TX1490 9 0 to 3 0 19 5 3 0 9 GE CWDM Optical Mod...

Page 54: ...nd DWDM optical modules is similar to that of common optical modules These optical modules are distinguished by their labels In practice the corresponding optical fibers are labeled to distinguish the optical modules GE DWDM Optical Module Table 4 7 lists the attributes of a GE dense wavelength division multiplexing DWDM optical module Table 4 7 Attributes of DWDM optical modules Center Wavel engt...

Page 55: ...1554 94 1555 75 DWDM SFPGE 155 5 75 1556 55 DWDM SFPGE 1556 55 1557 36 DWDM SFPGE 1557 36 1558 17 DWDM SFPGE 1558 17 1558 98 DWDM SFPGE 1558 98 1559 79 DWDM SFPGE 155 9 79 1560 61 DWDM SFPGE 1560 61 Specifi cations Encapsulation type eSFP Transmission distance 120 km Fiber type single mode LC Standard DWDM Operating temperature 0 C to 70 C NOTE The operating temperature cannot exceed 45 C when DWD...

Page 56: ...ttributes of a stack optical module Table 4 9 Attributes of a stack optical module mod el Trans missi on Dista nce km Cente r Wavel ength nm Trans mit Powe r dBm Receiv er Sensiti vity dBm Over load Opti cal Pow er dB m Extinctio n Ratio dB Fiber Type SFP 6GE LR 2 1310 8 4 to 0 5 13 8 0 5 3 5 l Fiber mode single mode l Connector type LC S2750 Series Ethernet Switches Hardware Description 4 Optical...

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