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Lantronix  

 

 

SM4T4DPA Install Guide 

33867 Rev. A 

https://www.lantronix.com 

 

Page 

25

 of 

29

 

1000BASE-T Pin Assignments 

All 1000BASE-T ports support automatic MDI/MDI-X operation, so you can use straight-through cables for all 
network connections to PCs or servers, or to other switches or hubs.  
The table below shows the 1000BASE-T MDI and MDI-X port pinouts. These ports require that all four pairs of 
wires be connected. Note that for 1000BASE-T operation, all four pairs of wires are used for both transmit and 
receive.  
Use 100-ohm Category 5, 5e, or 6 unshielded twisted-pair (UTP) or shielded twisted-pair (STP) cable for 
1000BASE-T connections. Also, be sure that the length of any twisted-pair connection does not exceed 100 meters 
(328 feet). 

1000BASE-T MDI and MDI-X Port Pinouts  
Pin  

MDI Signal Name    

 

 

 

 

MDI-X Signal Name  

1    

Bi-directional Pair A Plus (BI_DA+)    

Bi-directional Pair B Plus (BI_DB+)  

2    

Bi-directional Pair A Minus (BI_DA-)   

Bi-directional Pair B Minus (BI_DB-)  

3    

Bi-directional Pair B Plus (BI_DB+)    

Bi-directional Pair A Plus (BI_DA+)  

4    

Bi-directional Pair C Plus (BI_DC+)   

Bi-directional Pair D Plus (BI_DD+)  

5    

Bi-directional Pair C Minus (BI_DC-)  

Bi-directional Pair D Minus (BI_DD-)  

6    

Bi-directional Pair B Minus (BI_DB-)   

Bi-directional Pair A Minus (BI_DA-)  

7   

Bi-directional Pair D Plus (BI_DD+)   

Bi-directional Pair C Plus (BI_DC+) 

8    

Bi-directional Pair D Minus (BI_DD-)  

Bi-directional Pair C Minus (BI_DC-) 

Cable Testing for Existing Category 5 Cable 

Installed Category 5 cabling must pass tests for Attenuation, Near-End Crosstalk (NEXT), and Far-End Crosstalk 
(FEXT).  
This cable testing information is specified in the ANSI/TIA/EIA-TSB-67 standard. Additionally, cables must also 
pass test parameters for Return Loss and Equal-Level Far-End Crosstalk (ELFEXT). These tests are specified in 
the ANSI/TIA/EIA-TSB-95 Bulletin, “The Additional Transmission Performance Guidelines for 100 Ohm 4-Pair 
Category 5 Cabling.” 

Note

: When testing your cable installation, be sure to include all patch cables between switches and end devices. 

Adjusting Existing Category 5 Cabling to Run 1000BASE-T 

If your existing Category 5 installation does not meet one of the test parameters for 1000BASE-T, there are 
basically three measures that can be applied to try and correct the problem:  
1. Replace any Category 5 patch cables with high-performance Category 5e or Category 6 cables. 
2. Reduce the number of connectors used in the link.  
3. Reconnect some of the connectors in the link. 

 

 

Summary of Contents for SM4T4DPA

Page 1: ...SM4T4DPA Managed Layer 2 Gigabit Ethernet Switch 4 10 100 1000Base T Ports 4 100 1000Base X SFP Slots Install Guide Part Number 33867 Revision A August 2023 ...

Page 2: ... Support Online https www lantronix com technical support Sales Offices For a current list of our domestic and international sales offices go to www lantronix com about contact Disclaimer All information contained herein is provided AS IS Lantronix undertakes no obligation to update the information in this publication Lantronix does not make and specifically disclaims all warranties of any kind ex...

Page 3: ...nsceiver Slots 9 Port and System Status LEDS 9 AC Input 9 Network Planning 10 Application Examples 10 Installation 12 Equipment Checklist 13 Package Contents 13 Mounting 13 Rack Mounting 13 Desktop or Shelf Mounting 14 Installing an Optional SFP Transceiver 15 Connecting to a Power Source 15 Connecting to the Console Port 16 Making Network Connections 18 Connecting Network Devices 18 Troubleshooti...

Page 4: ...Guide 33867 Rev A https www lantronix com Page 4 of 29 Switching Features 27 Management Features 27 Standards 27 Compliance 28 Regulatory Agency Information 28 RoHS WEEE and Environmental Programs 28 Declaration of Conformity 28 ...

Page 5: ...eral switch functions the Internet Protocol IP Ethernet switches and networking and Simple Network Management Protocol SNMP Transition Networks is now Lantronix Some products firmware items are still in process of being re branded and may still reflect the Transition Networks name logo Related Manuals SM4T4DPA Web User Guide 33868 SM4T4DPA CLI Reference 33869 Software Release Note version specific...

Page 6: ...col stack Redundant Ring Protection Protocol Specifications Standards IEEE 802 3 IEEE 802 3u IEEE 802 3z IEEE 802 3x IEEE 802 3ad IEEE 802 1D IEEE 802 1w IEEE 802 1s IEEE 802 1Q IEEE 802 1p IEEE 802 1ad IEEE 802 1AB IEEE 802 3az IEEE 802 1X Connectors 1 RJ 45 console port 4 10 100 1000 RJ 45 ports 4 100 1000 SFP slots Protocols CSMA CD Technology Store and forward switching architecture MAC Addres...

Page 7: ...this warning could result in an electrical shock even death Warning Equipment grounding is vital to ensure safe operation The installer must ensure that the power module is properly grounded during and after installation Failure to observe this warning could result in an electric shock even death Warning A readily accessible suitable National Electrical Code NEC or local electrical code approved d...

Page 8: ... received into a buffer and checked for validity before being forwarded This prevents errors from being propagated throughout the network Network Management Options The switch can be managed over the network with a web browser or Telnet application The switch includes a built in network management agent that allows it to be managed in band using SNMP or RMON Groups 1 2 3 9 protocols It also has an...

Page 9: ... network troubleshooting The LEDs which are located on left hand side of the front panel for easy viewing Details are shown below and described in the following tables Table 1 Port Status LEDs LED Condition Status TP Link ACT Green Lit Green when TP link good Blinks when any traffic is present TP SPEED Green Lit Green when TP link on 1000Mbps Blinks when TP link on 100Mbps Off when TP link on 10Mb...

Page 10: ... into smaller and more manageable segments and linking them to the larger network than it turns the hop count back to zero and removes the limitation A switch can be easily configured in any Ethernet Fast Ethernet or Gigabit Ethernet network to significantly increase bandwidth while using conventional cabling and network cards Application Examples The Switch implements 4 Gigabit Ethernet TP ports ...

Page 11: ...Lantronix SM4T4DPA Install Guide 33867 Rev A https www lantronix com Page 11 of 29 Network Connection between Remote Site and Central Site Office Network Connection ...

Page 12: ... any other electrical interference Make sure that SM4T4DPA Switch is connected to a separate grounded power outlet that provides 100 to 240 VAC 50 to 60 Hz Ethernet Cabling To ensure proper operation when installing the switch into a network make sure that the current cables are suitable for 100BASE TX or 1000BASE T operation Check the following criteria against the current installation of your ne...

Page 13: ...ent rack or on a desktop or shelf Mounting instructions for each type of site as follows Rack Mounting Before rack mounting the switch please pay attention to the following factors Temperature Since the temperature within a rack assembly may be higher than the ambient room temperature check that the rack environment temperature is within the specified operating temperature range 0 to 40 C Mechanic...

Page 14: ... or Shelf Mounting Step 1 Attach the four adhesive rubber feet to the bottom of the first switch Attaching the Adhesive Rubber Feet Step 2 Set the device on a flat surface near an AC power source making sure there are at least two inches of space on all sides for proper air flow Step 3 If installing a single switch only go to Connecting to a Power Source at the end of this Chapter Step4 If install...

Page 15: ...down Note that SFP transceivers are keyed so they can only be installed in one orientation Step 3 Slide the SFP transceiver into the slot until it clicks into place Note SFP transceivers are not provided in the switch package Connecting to a Power Source You can plug or remove the power cord from AC power socket to switch the power on and off Inserting the Power Cord to AC Power Socket Step 1 Inse...

Page 16: ...pin assignments used to connect to the serial port are provided below Serial Port RJ 45 Pin Out Wiring Map for the Serial Cable Table 3 Serial Cable Wiring Switch s 8 Pin Serial Port Null Modem Cable PC s 9 Pin DTE Port 2 RXD receive data 3 TXD transmit data 3 RXD receive data 2 RXD receive data 5 SGND Signal ground 5 SGND Signal ground Note No other pins are used Plug in the Console Port The seri...

Page 17: ...e http 192 168 1 77 in the address row in a browser and it will show the following screen and ask you to enter a username and password in order to login and access authentication The default username and password are both admin For first time use enter the default username and password and then click the Login button The login process now is completed SM4T4DPA Web User Interface Note If you need t...

Page 18: ...hone jack connector into an RJ 45 port This will damage the switch Use only twisted pair cables with RJ 45 connectors that conform to FCC standards Connecting to PCs Servers Hubs and Switches Step 1 Attach one end of a twisted pair cable segment to the device s RJ 45 connector Making Twisted Pair Connections Step 2 If the device is a network card and the switch is in the wiring closet attach the o...

Page 19: ... optic port requires 50 125 or 62 5 125 micron multimode fiber optic cabling with an LC connector at both ends Warning This switch uses lasers to transmit signals over fiber optic cable The lasers are inherently eye safe in normal operation However user should never look directly at a transmit port when it is powered on Warning When selecting a fiber SFP device considering safety make sure that it...

Page 20: ...ters that are only recommendations for Category 5 So the first step in preparing existing Category 5 cabling for running 1000BASE T is a simple test of the cable installation to be sure that it complies with the IEEE 802 3 2005 standards Cable Labeling and Connection Records When planning a network installation it is essential to label the opposing ends of cables and to record where each cable is ...

Page 21: ...are snug If that does not correct the problem try a different cable Non standard cables Non standard and miswired cables may cause network collisions and other network problems and can seriously impair network performance Use a new correctly wired cable For pinouts and correct cable wiring A category 5 cable tester is a recommended tool for every 100Base TX and 1000Base T network installation Impr...

Page 22: ...vironment where you are sure that all the other components are functioning properly In Band Access You can access the management agent in the switch from anywhere within the attached network using Telnet a web browser However you must first configure the switch with a valid IP address subnet mask and default gateway If you have trouble establishing a link to the management agent check to see if yo...

Page 23: ...SE TX Pin Assignments Use unshielded twisted pair UTP or shielded twisted pair STP cable for RJ 45 connections 100 ohm Category 3 or better cable for 10 Mbps connections or 100 ohm Category 5 or better cable for 100 Mbps connections Also be sure that the length of any twisted pair connection does not exceed 100 meters 328 feet The RJ 45 ports on the switch base unit support automatic MDI MDI X ope...

Page 24: ...ll four wire pairs as shown in the following diagram to support Gigabit Ethernet EIA TIA 568B RJ 45 Wiring Standard 10 100BASE TX Straight through Cable Straight through Wiring Crossover Wiring If the twisted pair cable is to join two ports and either both ports are labeled with an X MDI X or neither port is labeled with an X MDI a crossover must be implemented in the wiring When auto negotiation ...

Page 25: ...ir C Minus BI_DC Bi directional Pair D Minus BI_DD 6 Bi directional Pair B Minus BI_DB Bi directional Pair A Minus BI_DA 7 Bi directional Pair D Plus BI_DD Bi directional Pair C Plus BI_DC 8 Bi directional Pair D Minus BI_DD Bi directional Pair C Minus BI_DC Cable Testing for Existing Category 5 Cable Installed Category 5 cabling must pass tests for Attenuation Near End Crosstalk NEXT and Far End ...

Page 26: ...Shifted Fiber Single mode 9 125 micron core Longer spans and extended reach Optimized for wavelength division multiplexing WDM transmission across wavelengths from 1285 to 1625 nm The zero dispersion wavelength is in the 1310 nm region G 653 Dispersion Shifted Fiber Single mode 9 125 micron core Longer spans and extended reach Optimized for operation in the region from 1500 to 1600 nm G 654 1550 n...

Page 27: ...2 F to 104 F Humidity Operating 5 to 90 non condensing Power Input 100 240VAC 50 60Hz Power Supply Internal auto ranging transformer 100 to 240 VAC 50 to 60 Hz Power Consumption 20 Watts maximum Switching Features Forwarding Mode Store and forward Throughput 11 9 Mpps Flow Control Full Duplex IEEE 802 3x Half Duplex Back pressure Management Features In Band Management SSH SSL Telnet SNMP or HTTP O...

Page 28: ...cture s Address 48 Discovery Suite 250 Irvine California 92618 USA Declares that the products SM4T4DPA Conforms to the following Product Regulations FCC Part 15 Class A EN 55032 2012 EN 55024 2010 Directive 2014 30 EU Low Voltage Directive 2014 35 EU IEC EN 60950 1 2006 A2 2013 2011 65 EU EN 50581 2012 With the technical construction on file at the above address this product carries the CE Mark I ...

Page 29: ...s 48 Discovery Suite 250 Irvine CA 92618 USA Toll Free 800 526 8766 Phone 949 453 3990 Fax 949 453 3995 Technical Support Online https www lantronix com technical support Sales Offices For a current list of our domestic and international sales offices go to the Lantronix web site at www lantronix com about contact ...

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