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SMC Networks SMC-EZ1026DT User Manual Download Page 40

T

ROUBLESHOOTING

28

3. Symptom

Computer A can connect to computer B, but cannot connect to 
computer C through the 24-port switch.

Probable causes

•

Computers A and C may be in different VLAN groups.

•

Computer C’s network device may not be working.

•

There may be a problem with the network configuration of 
computer C.

Possible Solutions

•

Check the VLAN configuration from the console port.

•

Check the link status LED on computer C’s network device. 
If it is off, try using another network device that is known 
to work.

•

Verify the network configuration of computer C.

4. Symptom

A trunked connection does not work.

Probable Causes

•

The trunk is not configured correctly.

•

The connecting ports on the other switch are not trunked.

•

The cable connections are not correct.

Possible Solutions

•

Check the trunk configuration from the console port.

•

Check that the connecting ports are trunked.

Summary of Contents for SMC-EZ1026DT

Page 1: ...ith push button MDI MDI X selection Optional Gigabit modules for high speed uplink Auto negotiation of speed and duplex mode Half and full duplex flow control Desktop and rack mountable Broadcast storm control Support for up to eight trunk ports Configurable VLAN port groups User Guide SMC EZ1026DT ...

Page 2: ......

Page 3: ...6 Hughes Irvine CA 92618 Phone 949 707 2400 EZ Switch 10 100 User Guide From SMC s EZ line of low cost workgroup LAN solutions May 2001 Pub 150525 301 ...

Page 4: ...se No license is granted by implication or otherwise under any patent or patent rights of SMC SMC reserves the right to change specifications at any time without notice Copyright 2001 by SMC Networks Inc 6 Hughes Irvine CA All rights reserved Printed in Taiwan Trademarks SMC is a registered trademark and EZ Switch is a trademark of SMC Networks Inc Other product and company names are trademarks or...

Page 5: ...an Active SMC product A list of discontinued products with their respective dates of discontinuance can be found at http www smc com smc pages_html support html All products that are replaced become the property of SMC Replacement products may be either new or reconditioned Any replaced or repaired product carries either a 30 day limited warranty or the remainder of the initial warranty whichever ...

Page 6: ...LIGENCE SHALL SMC BE LIABLE FOR INCIDENTAL CONSEQUENTIAL INDIRECT SPECIAL OR PUNITIVE DAMAGES OF ANY KIND OR FOR LOSS OF REVENUE LOSS OF BUSINESS OR OTHER FINANCIAL LOSS ARISING OUT OF OR IN CONNECTION WITH THE SALE INSTALLATION MAINTENANCE USE PERFORMANCE FAILURE OR INTERRUPTION OF ITS PRODUCTS EVEN IF SMC OR ITS AUTHORIZED RESELLER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES SOME STATES ...

Page 7: ...l be required to correct the interference at his own expense EC Conformance Declaration Class A SMC contact for these products in Europe is SMC Networks Europe Edificio Conata II Calle Fructuós Gelabert 6 8 2o 4a 08970 Sant Joan Despí Barcelona Spain This information technology equipment complies with the requirements of the Low Voltage Directive 73 23 EEC and the EMC Directive 89 336 EEC and carr...

Page 8: ...ence causing equipment standard entitled Digital Apparatus ICES 003 of Industry Canada Cet appareil numérique respecte les limites de bruits radioélectriques applicables aux appareils numériques de Classe A prescrites dans la norme sur le matérial brouilleur Appareils Numériques NMB 003 édictée par l Industrie Safety Compliance CSA NRTL C22 2 950 UL 1950 EN 60950 IEC 950 ...

Page 9: ...traum nicht benutzt sollten Sie es vom Stromnetz trennen Somit wird im Falle einer Überspannung eine Beschädigung vermieden 12 Durch die Lüftungsöffnungen dürfen niemals Gegenstände oder Flüssigkeiten in das Gerät gelangen Dies könnte einen Brand bzw elektrischen Schlag auslösen 13 Öffnen sie niemals das Gerät Das Gerät darf aus Gründen der elektrischen Sicherheit nur von authorisiertem Serviceper...

Page 10: ...COMPLIANCES iv ...

Page 11: ...ty 14 Program Description 15 Main Window 15 Properties Window 17 Port Page 17 Trunk Assignment 19 Default Switch Configuration 25 Default Settings 26 Troubleshooting 27 Cables 30 Cable Specifications 30 RJ 45 Connector Pin Assignments 31 10BASE T 100BASE TX Pin Assignments 31 1000BASE T Pin Assignments 33 1000BASE T Cable Requirements 34 Cable Testing for Existing Category 5 Cable 34 Adjusting Exi...

Page 12: ...ABLE OF CONTENTS vi Console Port to 9 Pin COM Port on PC 37 Specifications 38 EZ Switch 10 100 38 Optional Modules 40 100BASE TX Module 40 1000BASE T Module 40 100BASE FX Module 41 1000BASE SX Module 42 ...

Page 13: ...as an MDI or MDI X port via a push button switch Auto negotiation is used to select the optimal transmission speed and communication mode for each connection With store and forward switching and flow control maximum data integrity is always maintained even under heavy loading This switch also provides advanced features that are configurable via a console port connection A Windows based utility all...

Page 14: ...ion module gives remote 100 Mbps links up to a distance of 2 km Auto negotiation of half or full duplex on all ports IEEE 802 3 and 802 3u compliance ensures compatibility with standards based hubs switches and cards from any vendor Half and full duplex flow control prevents packets from being dropped under heavy loading At a glance LEDs for port and system status monitoring Desktop and rack mount...

Page 15: ...work connection On Yellow The port has established a valid network connection and communications have been set to 10 Mbps On Green The port has established a valid network connection and communications have been set to 100 Mbps Flashing Yellow Communications have been set to 10 Mbps and traffic is passing through the port Flashing Green Communications have been set to 100 Mbps and traffic is passi...

Page 16: ...are four optional modules a 2 port 1000BASE T a 2 port 1000BASE SX an 8 port 10BASE T 100BASE TX module and a 2 port 100BASE FX module These are shown in that order in the figure below 25X 26X 25 26 FDX Col ACT LINK SPD GN 1000M OFF 10M YW 100M 25X 26X 27X 28X 25X 26X 27X 28X 29X 30X 31X 32X 29X 30X 31X 32X 25 26 27 28 29 30 31 32 LINK ACT FDX COL ...

Page 17: ...have been set to 1 Gbps LNK Off The port has not established any network connection On Green The port has established a valid network connection ACT Off The port is not receiving traffic On The port is receiving traffic FDX Col Off The port is in half duplex mode On The port is in full duplex mode Flashing Packet collision is occuring in half duplex mode EZ SMC1026GSSC Module Ports LNK Off The por...

Page 18: ...alid network connection and communications have been set to 10 Mbps On Green The port has established a valid network connection and communications have been set to 100 Mbps Flashing Yellow Communications have been set to 10 Mbps and traffic is passing through the port Flashing Green Communications have been set to 100 Mbps and traffic is passing through the port FDX COL On The port is in full dup...

Page 19: ...ts EZ Switch 10 100 SMC EZ1026DT Appropriate AC power cable Rackmount kit Four adhesive foot pads SMC Warranty Registration Card This User Guide Console cable RS232 null modem Setup Utility disk Selecting a Site Be sure to follow the site selection guidelines below when choosing a location Select a suitable location for the switch It should be accessible for installing cabling and maintaining the ...

Page 20: ...pment on top of a rack mounted switch Circuit Overloading Be sure that the supply circuit to the rack assembly is not overloaded Grounding Rack mounted equipment should be properly grounded Particular attention should be given to supply connections other than direct connections to the mains Make sure twisted pair cable is always routed away from power lines fluorescent lighting fixtures and other ...

Page 21: ...sitioning the Switch For desktop or shelf mounting attach the four adhesive feet to the bottom of the switch For rack mounting attach the mounting brackets on both sides of the switch with the screws provided and install the switch in the rack ...

Page 22: ...TX module is installed this increases the number of 10 100 Mbps connections from 24 to 32 Note If an attached device does not support auto negotiation the data rate will be sensed automatically and the communication mode will default to half duplex 4 Connecting to a 100BASE FX Port The 100BASE FX module operates at 100 Mbps full duplex and supports IEEE 802 3x flow control When you connect fiber c...

Page 23: ...x and supports IEEE 802 3x flow control When you connect fiber cable to a 1000BASE SX module on the switch be sure you use an SC type connector When inserting the cable be sure the tab on the plug clicks into position to ensure that it is properly seated For fiber optic connections use 50 125 or 62 5 125 micron multimode fiber optic cable If you need to connect a cable with ST type plugs to a devi...

Page 24: ... supports IEEE 802 3x flow control Auto negotiation is used to select the optimal transmission speed and communication mode for each connection Use Category 5 or 5e cable of maximum length 100m 328 feet You should also test the cable installation for IEEE 802 3ab compliance See 1000BASE T Cable Requirements on page 34 ...

Page 25: ... dedicated 20 Mbps full duplex connections to workstations and 200 Mbps full duplex connections to power users and servers An optional Gigabit fiber module installed in the front panel is used to provide a 2 Gbps full duplex link to a switch up to 550 m away An 800 Mbps trunk link is provided to another switch by grouping four full duplex 200 Mbps links ...

Page 26: ...ram for configuring the SMC EX1026DT You can use the utility to configure port parameters port trunks and VLAN membership You can also download the switch s default configuration via the utility For details see Default Switch Configuration on page 25 Note Backup your utility diskettes and use the copies as working diskettes to protect the originals from accidental damage Follow the steps below to ...

Page 27: ... new configuration and write this configuration into the device The parts of the main window are summarized as follows Device Type Select the device type that you wish to configure Three types may be selected 24 Port N Way Switch no installed module 32 Port N Way Switch with SMC EZ1026T module 24 Port Switch 1000Base SX On Board with SMC EZ1026GSSC module ...

Page 28: ... and open it to configure the switch File Save Save the current configuration to a switch configuration file Properties This opens up the three page properties window from which new configuration settings may be entered Device Write Write the current configuration data into the switch Device Read Read the configuration data from the switch Exit Leave the program ...

Page 29: ...nfiguration section You can set other ports to the selected configuration by using the Apply to other ports button Port Selection Select a port to set its configuration Address Learning Enables the source MAC address of packets arriving at this port to be learned Broadcast Storm Control If the number of broadcast packets in the input buffer is over the threshold new incoming packets will be discar...

Page 30: ...nected directly to the switch IEEE 802 3x Flow Control is used for full duplex Auto Negotiation Auto negotiation for data rate and duplex mode may be enabled If auto negotiation is disabled data rate and duplex mode must be specified Apply to Other Ports This window may be used to automatically apply the current port s configuration to the other ports selected ...

Page 31: ...cing the load across each port in the trunk the additional ports provide redundancy by taking over the load if a port in the trunk should fail However before making any physical connections between devices use the Trunk Configuration menu to specify the trunk on the devices at both ends When using port trunks remember that The ports used in a trunk must all be of the same media type RJ 45 or 1000 ...

Page 32: ...tion menu This allows the traffic passing across that link to be automatically distributed to the other links in the trunk without losing any significant amount of traffic Trunk Selection Trunk Port Assignment Click the Trunk Selection and Trunk Port Assignment checkboxes to configure the port trunking For Mac address based load balancing each trunk may consist of two to eight ports For port based...

Page 33: ...hod is an explicit port assignment scheme Each port that does not belong to a particular trunk must be assigned to a port in that trunk When the switch receives a packet with a DA that is associated with a trunk it will automatically forward the packet to the trunk port that the receiving port has been assigned to ...

Page 34: ...ancing Mapping to invoke the dialog box Port Balanced Trunk Port Mapping for Trunk X Then click the radio buttons to configure the port based load balancing mapping as shown below After assigning all mappings click OK to leave this dialog box The status on the right hand side of the Port Based button will now be OK ...

Page 35: ...a VLAN group A maximum of 32 VLAN groups can be specified The forwarding rule is that packets from the source port trunk will only be forwarded to ports within the same VLAN group A broadcast multicast packet will be forwarded to all ports trunks within the same VLAN s as the source port trunk except the source port itself A unicast packet will be forwarded to the destination port trunk only if th...

Page 36: ...n click OK Note Once a VLAN group has been added all other unselected ports will be gathered into one implicit VLAN group However it is recommended to configure all needed VLAN groups Modify Click on the Modify button or double click on a highlighted group to invoke the Modify the VLAN Group dialog box Then click on the Individual Port checkboxes to modify the membership of the VLAN group then cli...

Page 37: ...rovided on diskette 2 2 of the Setup Utility The file that is used depends on the module installed as shown in the table below To download the file 1 Insert the diskette into the floppy drive of your computer 2 Click on Open in main window of the utility program to browse for the file 3 Click on Open The file will now download Filename Module Installed 24P BIN None 32P BIN 8 Port 10BASE T 100BASE ...

Page 38: ...ng table shows the default configuration Page Option Default Port Address Learning Enabled Broadcast Storm Control Disabled Full Duplex Flow Control Enabled Auto Negotiation Enabled Trunk Assignment Load Balancing Method Port Based Trunk Selection None VLAN VLAN Group List None ...

Page 39: ...e Possible Solutions Check that the switch and attached device are both powered on Be sure the network cable is connected to both devices Verify that Category 5 cable is used for 100 Mbps connections and that the length of any cable does not exceed 100 meters 328 feet Check the network card and cable connections for defects Replace the defective card or cable if necessary For ST type fiber module ...

Page 40: ...eck the VLAN configuration from the console port Check the link status LED on computer C s network device If it is off try using another network device that is known to work Verify the network configuration of computer C 4 Symptom A trunked connection does not work Probable Causes The trunk is not configured correctly The connecting ports on the other switch are not trunked The cable connections a...

Page 41: ...ble is used for 100 Mbps RJ 45connections and that the length of any cable does not exceed 100 meters 328 feet Verify that cross over cables are used for MDI X to MDI X connections and straight through cables are used for MDI X to MDI connections ...

Page 42: ...Type Max Length Connector 10BASE T Cat 3 4 5 100 ohm UTP 100 m 328 ft RJ 45 100BASE TX Cat 5 100 ohm UTP 100 m 328 ft RJ 45 1000BASE T Cat 5 5e 100 ohm UTP 100 m 328 ft RJ 45 100BASE FX 50 125 or 62 5 125 micron multimode fiber optic cable 2 km 1 24 miles SC Maximum 1000BASE SX Cable Length Fiber Size Fiber Bandwidth Max Length Connector 62 5 125 micron 160 MHz km 2 220 m 7 722 ft SC 200 MHz km 2 ...

Page 43: ...elow Port 13 on this switch and the SMC EZ1026GT module ports support automatic MDI MDI X operation So for these ports you can use straight through cables for all network connections to PCs or servers or to other switches or hubs In straight through cable pins 1 2 3 and 6 at one end of the cable are connected straight through to pins 1 3 and 6 at the other end of the cable Pin MDI X Signal Name MD...

Page 44: ...hrough 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 Straight Through RJ 45 Pin Assignments End 1 End 2 1 RD 1 TD 2 RD 2 TD 3 TD 3 RD 6 TD 6 RD Crossover RJ 45 Pin Assignments End 1 End 2 1 TD 3 RD 2 TD 6 RD 3 RD 1 TD 6 RD 2 TD ...

Page 45: ...able for 1000BASE T connections Also be sure that the length of any twisted pair connection does not exceed 100 meters 328 feet Pin MDI Signal Name MDI X Signal Name 1 2 3 4 5 6 7 8 Transmit Data plus TD1 Receive Data minus RD1 Transmit Data plus TD2 Transmit Data plus TD3 Receive Data minus RD3 Receive Data minus RD2 Transmit Data plus TD4 Receive Data minus RD4 Transmit Data plus TD2 Receive Dat...

Page 46: ...SE T is a simple test of the cable installation to be sure that it complies with the IEEE 802 3ab standards 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 R...

Page 47: ...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 cables 2 Reduce the number of connectors used in the link 3 Reconnect some of the connectors in the link ...

Page 48: ...on the switch s rear panel is used to connect to the switch for out of band console configuration The switch can be configured from a PC running the Setup utility program The pin assignments used to connect to the serial port are provided in the following tables ...

Page 49: ...BB 104 RxD Received Data 2 2 3 BA 103 TxD Transmitted Data 3 3 2 CD 108 2 DTR Data Terminal Ready 4 4 20 AB 102 SG Signal Ground 5 5 7 CC 107 DSR Data Set Ready 6 6 6 CA 105 RTS Request to Send 7 7 4 CB 106 CTS Clear to Send 8 8 5 CE 125 RI Ring Indicator 9 9 22 Switch s 9 Pin Serial Port CCITT Signal PC s 9 Pin COM Port 1 DCD DCD 1 2 RXD TXD 3 3 TXD RXD 2 4 DTR DSR 6 5 SGND SGND 5 6 DSR DTR 4 7 R...

Page 50: ...k Interface RJ 45 100 ohm UTP cable 10BASE T Categories 3 4 or 5 100BASE TX Category 5 LEDs System Power Ports LINK ACT FDX COL Switching Method Store and forward MAC Address Table 17K entries per system Memory Buffer 2 MBytes per port Filtering Forwarding Learning Rates Full line rate Flow Control Full Duplex IEEE 802 3x Half Duplex Back pressure ...

Page 51: ...midity 5 to 95 non condensing Power Requirements 100 to 240 VAC 10 50 to 60 Hz 3 Hz Power Consumption 35 Watts maximum Heat Dissipation 119 BTU hr maximum 100 240 VAC Standards IEEE 802 3 IEEE 802 3u EMC Safety Compliances CE Mark FCC Class A EN55024 CISPR 22 Class A IEC 61000 4 2 3 4 5 6 11 CSA NRTL C22 2 950 UL 1950 TÜV GS EN60950 Warranty Limited Lifetime ...

Page 52: ...tiation Communication Mode Full and half duplex with auto negotiation Network Interface RJ 45 100 ohm UTP cable 10BASE T Categories 3 4 or 5 100BASE TX Category 5 LEDs LINK ACT FDX COL Standards IEEE 802 3 IEEE 802 3u 1000BASE T Module Model SMC EZ1026GT Access Method CSMA CD Ports 2 10BASE T 100BASE TX 1000BASE T with auto negotiation ...

Page 53: ... or 5 100BASE TX Category 5 1000BASE T Category 5 or 5e LEDs SPD LINK ACT FDX Col Standards IEEE 802 3 IEEE 802 3u IEEE 802 3ab 100BASE FX Module Model SMC EZ1026FMSC Access Method CSMA CD Ports 2 100BASE FX Communication Mode Full duplex Network Interface SC connector 50 125 or 62 5 125 micron multimode fiber cable LEDs LNK ACT Standards 802 3u ...

Page 54: ...000BASE SX Module Model SMC EZ1026GSSC Access Method CSMA CD Ports 2 1000BASE SX Communication Mode Full duplex Network Interface SC connector 50 125 or 62 5 125 micron multimode fiber cable LEDs LNK ACT Standards 802 3z ...

Page 55: ......

Page 56: ...OU Fax 949 707 2460 Spain 34 93 477 4920 Fax 34 93 477 3774 UK 44 0 1188 748700 Fax 44 0 1189 748701 Southern Europe 33 1 41 18 68 68 Fax 33 1 41 18 68 69 Central Eastern Europe 49 0 89 92861 200 Fax 49 0 89 92861 230 Nordic 46 8 564 33145 Fax 46 8 87 62 62 Middle East 971 48818410 Fax 971 48817993 South Africa 27 0 11 3936491 Fax 27 0 11 3936491 PRC 86 10 6235 4958 Fax 86 10 6235 4962 Taiwan 886 ...

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