LevelOne GSW-2476 User Manual Download Page 83

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A-1

PPENDIX

ROUBLESHOOTING

Diagnosing Switch Indicators

Table A-1 Troubleshooting Chart

Symptom

Action

Power LED is Off

•

Check connections between the switch, the power
cord, and the wall outlet.

•

Contact your dealer for assistance.

•

Contact LevelOne Technical Support.

Link LED is Off

•

Verify that the switch and attached device are powered
on.

•

Be sure the cable is plugged into both the switch and
corresponding device.

•

If the switch is installed in a rack, check the
connections to the punch-down block and patch panel.

•

Verify that the proper cable type is used and its length
does not exceed specified limits.

•

Check the adapter on the attached device and cable
connections for possible defects. Replace the defective
adapter or cable if necessary.

Summary of Contents for GSW-2476

Page 1: ...LevelOne GSW 2476 24 Port Gigabit w 4 Port SFP Web Smart Switch User Manual Version 1 0 0608...

Page 2: ......

Page 3: ...e to radio communications Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expen...

Page 4: ...voltage supply system according to EN 61000 3 3 1995 Immunity Product family standard according to EN 55024 1998 Electrostatic Discharge according to EN 61000 4 2 1995 Contact Discharge 4 kV Air Disch...

Page 5: ...the unit and easily accessible You can only remove power from the unit by disconnecting the power cord from the outlet This unit operates under SELV Safety Extra Low Voltage conditions according to I...

Page 6: ...east 10 A The attachment plug must be an earth grounding type with NEMA 5 15P 15 A 125 V or NEMA 6 15P 15 A 250 V configuration Denmark The supply plug must comply with Section 107 2 D1 Standard DK2 1...

Page 7: ...tation for this product uses biodegradable paper that originates from sustained and managed forests The inks used in the printing process are non toxic Warning This product does not contain any servic...

Page 8: ...ics and how to install the switch Audience This guide is for system administrators with a working knowledge of network management You should be familiar with switching and networking concepts Related...

Page 9: ...Management 1 6 2 Network Planning 2 1 Introduction to Switching 2 1 Application Examples 2 2 Collapsed Backbone 2 2 Central Wiring Closet 2 3 Remote Connections with Fiber Cable 2 4 Making VLAN Connec...

Page 10: ...rnet Collision Domain 4 7 Cable Labeling and Connection Records 4 8 5 Configuring the Switch 5 1 Using the Web Interface 5 1 Navigating the Web Browser Interface 5 2 Home Page 5 2 Configuration Option...

Page 11: ...es B 1 Twisted Pair Cable and Pin Assignments B 1 10BASE T 100BASE TX Pin Assignments B 2 Straight Through Wiring B 3 Crossover Wiring B 4 1000BASE T Pin Assignments B 5 Cable Testing for Existing Cat...

Page 12: ...TABLE OF CONTENTS xii...

Page 13: ...ber Optic Cable Length 4 7 Table 4 4 Maximum 1000BASE ZX Fiber Optic Cable Length 4 7 Table 4 5 Maximum Fast Ethernet Cable Length 4 7 Table 4 6 Maximum Ethernet Cable Length 4 7 Table 5 1 Web Page Co...

Page 14: ...Making Twisted Pair Connections 4 2 Figure 4 2 Wiring Closet Connections 4 3 Figure 4 3 Making Connections to SFP Transceivers 4 5 Figure 5 1 Home Page 5 2 Figure 5 2 Front Panel Indicators 5 3 Figur...

Page 15: ...N Configuration 5 32 Figure 5 23 802 1Q VLAN Group 5 32 Figure 5 24 QoS Settings 5 34 Figure 5 25 Management Access Filter Configuration 5 35 Figure 5 26 IGMP Snooping Configuration 5 37 Figure 5 27 I...

Page 16: ...FIGURES xvi...

Page 17: ...Rear Panel If an SFP transceiver is plugged in the corresponding RJ 45 port is disabled for ports 21 24 1 2 7 8 12 3 4 5 6 9 10 11 13 14 15 16 17 18 19 20 21 22 23 24 Link Act Link Act Power 1000 1000...

Page 18: ...tch uses store and forward switching to ensure maximum data integrity With store and forward switching the entire packet must be received into a buffer and checked for validity before being forwarded...

Page 19: ...connected to one of these ports does not support auto negotiation the communication mode of that port can be configured manually SFP Slots The Small Form Factor Pluggable SFP transceiver slots are sha...

Page 20: ...ashing indicates activity Off There is no valid link on the port 1000 Mbps On Green Port is operating at 1000 Mbps Off Port is operating at 10 or 100 Mbps Table 1 2 Power Status LED LED Condition Stat...

Page 21: ...gotiation enables each RJ 45 port to automatically select the optimum communication mode half or full duplex if this feature is supported by the attached device otherwise the port can be configured ma...

Page 22: ...s 1000BASE SX 1000BASE LX and 1000BASE ZX SFP transceivers Performance Transparent bridging Provides store and forward switching Supports Jumbo frames up to 9 6 Kbytes Supports flow control Broadcast...

Page 23: ...ice experiencing congestion server power user or hub can be attached directly to a switched port And by using full duplex mode the bandwidth of the dedicated segment can be doubled to maximize through...

Page 24: ...or servers When the time comes for further expansion just connect to another hub or switch using one of the Gigabit Ethernet ports built into the front panel or a Gigabit Ethernet port on a plug in S...

Page 25: ...are providing 1 Gbps full duplex connections for up to 24 local segments In addition the switch is also connecting remote servers over fiber optic cable at 1 Gbps Figure 2 2 Central Wiring Closet 10 1...

Page 26: ...connecting multiple segments with fiber cable Figure 2 3 Remote Connections with Fiber Cable Server Farm 10 100 Mbps Segments Remote Switch Remote Switch 1000BASE LX SMF 5 kilometers Headquarters 1000...

Page 27: ...ks attached to a single switch However tagged VLANs should be used for larger networks and all the VLANs assigned to the inter switch links Figure 2 4 Making VLAN Connections Note When connecting to a...

Page 28: ...that require routing between dissimilar network types you can attach the switch directly to a multi protocol router 3 As a general rule the length of fiber optic cable for a single switched link shoul...

Page 29: ...oximately five centimeters or two inches on all sides for proper air flow be accessible for installing cabling and maintaining the devices allow the status LEDs to be clearly visible Make sure twisted...

Page 30: ...Unshielded twisted pair UTP or shielded twisted pair STP cables with RJ 45 connectors Category 3 or better for 10BASE T Category 5 or better for 100BASE TX and Category 5 5e or 6 for 1000BASE T Protec...

Page 31: ...t screws for attaching the brackets to the switch Power cord CD User Guide Optional Rack Mounting Equipment If you plan to rack mount the switches be sure to have the following equipment available Fou...

Page 32: ...the specified operating temperature range see page C 2 Mechanical Loading Do not place any equipment on top of a rack mounted unit Circuit Overloading Be sure that the supply circuit to the rack assem...

Page 33: ...the screws provided in the Bracket Mounting Kit Figure 3 2 Attaching the Brackets 2 Mount the device in the rack using four rack mounting screws not provided Figure 3 3 Installing the Switch in a Rac...

Page 34: ...e making sure there are at least two inches of space on all sides for proper air flow 3 If installing a single switch only go to Connecting to a Power Source at the end of this chapter 4 If installing...

Page 35: ...on page 4 6 2 Insert the transceiver with the optical connector facing outward and the slot connector facing down Note that SFP transceivers are keyed so they can only be installed in one orientation...

Page 36: ...ocket 2 Plug the other end of the cable into a grounded 3 pin AC power source Note For international use you may need to change the AC line cord You must use a line cord set that has been approved for...

Page 37: ...s Use Category 5 5e or 6 cable for 1000BASE T connections Category 5 or better for 100BASE TX connections and Category 3 or better for 10BASE T connections Cabling Guidelines The RJ 45 ports on the sw...

Page 38: ...in the wiring closet attach the other end of the cable segment to a modular wall outlet that is connected to the wiring closet See Network Wiring Connections on page 4 3 Otherwise attach the other end...

Page 39: ...segment to the back of the patch panel where the punch down block is located and the other end to a modular wall outlet 3 Label the cables to simplify future troubleshooting See Cable Labeling and Co...

Page 40: ...erently eye safe in normal operation However you should never look directly at a transmit port when it is powered on Note When selecting a fiber SFP device considering safety please make sure that it...

Page 41: ...ransceivers 4 As a connection is made check the Link LED on the switch corresponding to the port to be sure that the connection is valid The 1000BASE SX 1000BASE LX and 1000BASE ZX fiber optic ports o...

Page 42: ...egory 5e enhanced Category 5 or Category 6 cable should be used The Category 5e specification includes test parameters that are only recommendations for Category 5 Therefore the first step in preparin...

Page 43: ...4 Maximum 1000BASE ZX Fiber Optic Cable Length Fiber Diameter Fiber Bandwidth Cable Length Range Connector 9 125 micron single mode fiber N A 2 m 70 km 7 ft 43 5 miles LC Table 4 5 Maximum Fast Ether...

Page 44: ...el the opposing ends of each cable Using your building s floor plans draw a map of the location of all network connected equipment For each piece of equipment identify the devices to which it is conne...

Page 45: ...ccessing the switch from a web browser be sure you have first performed the following tasks 1 Configure the switch with a valid IP address subnet mask and default gateway Defaults IP address 192 168 2...

Page 46: ...is admin Note If user input is not detected within five minutes the current session is terminated Home Page When your web browser connects with the switch s web agent the home page is displayed as sho...

Page 47: ...he menu Tools Internet Options General Temporary Internet Files Settings the setting for item Check for newer versions of stored pages should be Every visit to the page Panel Display The web interface...

Page 48: ...13 Name Shows the name of the switch 5 13 LAN Settings Sets the LAN IP address subnet mask and gateway IP address 5 14 Password Changes the password 5 15 Tools 5 16 Reset to Factory Defaults Force the...

Page 49: ...up into static trunks 5 27 Settings Configures trunk connection settings 5 27 VLANS 5 28 VLAN Membership Configure VLAN port groups 5 28 VLAN Port Config Configures VLAN behavior for individual ports...

Page 50: ...all ports on the unit are members of VLAN 1 The management station must always be attached to a port on VLAN 1 IP Address Address of the VLAN to which the management station is attached Note that the...

Page 51: ...and receive untagged packets PVID The VLAN ID assigned to untagged frames received on the interface Default 1 Trunk Information Trunk The trunk label T1 through T8 are used as trunk labels Type All t...

Page 52: ...CONFIGURING THE SWITCH 5 8 Web Click STATUS Overview Figure 5 3 Switch Information...

Page 53: ...them from being deliverable to a higher layer protocol Transmitted Multicast Packets The total number of packets that higher level protocols requested be transmitted and which were addressed to a mul...

Page 54: ...ound packets that could not be transmitted because of errors Received Medium Priority Packets The total number of received packets that set as Medium Priority in the QoS settings Received Low Priority...

Page 55: ...he network This statistic can be used as a reasonable indication of Ethernet utilization Broadcast Frames The total number of good frames received that were directed to the broadcast address Note that...

Page 56: ...ts but including FCS octets 65 127 Byte Frames 128 255 Byte Frames 256 511 Byte Frames 512 1023 Byte Frames 1024 1518 Byte Frames The total number of frames including bad packets received and transmit...

Page 57: ...ON 5 13 Web Click STATUS Statistics Figure 5 4 Port Statistics Displaying System Name You can easily identify the system by displaying the device name Field Attributes Switch Name Name assigned to the...

Page 58: ...ions that exist on another network segment Field Attributes DHCP Enabled Check the box to enable DHCP default disabled LAN IP Address Address of the VLAN interface that is allowed management access Va...

Page 59: ...Settings Configuring the Logon Password The administrator has write access for all parameters governing the onboard agent You should therefore assign a new administrator password as soon as possible a...

Page 60: ...7 Password Settings Tools On the Tools page you can restore the switch to default settings upgrade the firmware of the switch or restart the switch Reset to Factory Defaults Force the switch to restor...

Page 61: ...s Upgrade Firmware To Upgrade the switch system firmware select Upgrade Firmware from the Tools drop down list then click on the Browse button to select the firmware file Click the APPLY button to upg...

Page 62: ...elect Upload Download Configuration from the Tools drop down list then click Upload or Download and then click on the Browse button to select the file Figure 5 10 Restart Switch Set boot Image Web Cli...

Page 63: ...c address table which removes ages out any addresses that are not seen for a specified time period You can also manually configure static MAC addresses that are assigned to specific ports on the switc...

Page 64: ...nsmit counters and five receive counters as well as 1 transmit byte counter and receive byte counter Please also note the following restrictions Received Unicast Packets can be enabled after Received...

Page 65: ...nually fix the speed duplex mode and flow control Field Attributes Enable Jumbo Frames Click to enable or disable Jumbo Frames Speed Duplex Allows you to manually set the port speed and duplex mode Fl...

Page 66: ...CONFIGURING THE SWITCH 5 22 Web Click PORTS Settings Figure 5 15 Port Configuration...

Page 67: ...d for broadcast traffic for each port Any broadcast packets exceeding the specified threshold will then be dropped Field Attributes Type List the type of traffic which can be rate limited including IC...

Page 68: ...ossing the source port in a completely unobtrusive manner Field Attributes Ports to Mirror Select the ports that you want to mirror from this section of the page A port will be mirrored when the Mirro...

Page 69: ...l ingress bandwidth never exceeds the egress bandwidth Web Click PORTS Port Mirroring Figure 5 17 Port Mirroring Cable Diagnostic You can perform cable diagnostics for all ports or selected ports to d...

Page 70: ...Membership This page allows you to create a maximum of eight trunks of up to eight ports each The Membership Table has one row for each port and ten columns Each row contains nine radio buttons which...

Page 71: ...button in the corresponding column then click APPLY Web Click TRUNKS Membership To assign a port to a trunk click the required trunk number then click APPLY Figure 5 19 Trunk Membership Trunk Configu...

Page 72: ...individual ports VLANs are powerful but can be difficult to set up properly Each row of the table corresponds to one port or trunk trunked ports cannot be configured individually Introduction to VLAN...

Page 73: ...ultiple customers across their networks QinQ tunneling is used to maintain customer specific VLAN configurations even when different customers use the same internal VLAN IDs This is accomplished by in...

Page 74: ...to All PCs cannot in general send or receive tagged packets Switches should be connected to each other with Packet Type set to Tagged If the Packet Type is set to All the port can accept incoming tagg...

Page 75: ...Ns to change the VLAN membership and behaviour of individual ports You can create new VLAN group on Add VLAN Group and view every VLAN group ID on VLAN Group List Note For QinQ application the number...

Page 76: ...ip To add a new type into the VLAN ID 1 4095 of the VLAN group you want the new group to be then click Add to open up the 802 1Q VLAN Group window on which you can configure VLAN membership Figure 5 2...

Page 77: ...ontent of the VLAN tag The 802 1p field is held within the VLAN tag of a packet The field is three bits long so can hold eight values 0 7 inclusive When QoS Mode is set to 802 1p the 802 1p Configurat...

Page 78: ...values to normal priority or select All High Priority to set all values to high priority Use Custom if you want to set each value individually Web Click QOS Settings In QoS Mode select QoS Diabled 802...

Page 79: ...agement interface on the switch from an invalid address the switch will reject the connection Note Invalid frames will not be able to access management interface but normal forwarding is not impacted...

Page 80: ...network traffic to determine which hosts want to receive multicast traffic Router Ports Set if ports are conneting to the IGMP administrative routers Unregistered IPMC Flooding enabled Set the forward...

Page 81: ...mber Querier Show whether Querying is enabled Queries transmitted Show the number of transmitted Query packets Queries received Show the number of received Query packets v1 Reports Show the number of...

Page 82: ...CONFIGURING THE SWITCH 5 38 Web Click IGMP Snoop Status Figure 5 27 IGMP Snoop Status...

Page 83: ...LED is Off Verify that the switch and attached device are powered on Be sure the cable is plugged into both the switch and corresponding device If the switch is installed in a rack check the connecti...

Page 84: ...to be malfunctioning such as the power cord or network cabling test them in an alternate environment where you are sure that all the other components are functioning properly In Band Access You can ac...

Page 85: ...g the power cord from the power socket 2 Unplug all cables from the ports 3 Use an Ethernet cable to connect port 1 to port 2 4 Plug the power cord back to the power socket 5 Wait at least 40 seconds...

Page 86: ...TROUBLESHOOTING A 4...

Page 87: ...n with white stripes Also an RJ 45 connector must be attached to both ends of the cable Caution Each wire pair must be attached to the RJ 45 connectors in a specific orientation Caution DO NOT plug a...

Page 88: ...k 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 2 3 and 6 at the other end of t...

Page 89: ...port on the switch you can use either straight through or crossover cable to connect to any device type You must connect all four wire pairs as shown in the following diagram to support Gigabit Ether...

Page 90: ...ed for any RJ 45 port on the switch you can use either straight through or crossover cable to connect to any device type You must connect all four wire pairs as shown in the following diagram to suppo...

Page 91: ...talk 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 Th...

Page 92: ...he number of connectors used in the link 3 Reconnect some of the connectors in the link Fiber Standards The current TIA Telecommunications Industry Association 568 A specification on optical fiber cab...

Page 93: ...r auto MDI X 10BASE T RJ 45 100 ohm UTP cable Category 3 or better 100BASE TX RJ 45 100 ohm UTP cable Category 5 or better 1000BASE T RJ 45 100 ohm UTP or STP cable Category 5 5e or 6 Maximum Cable Le...

Page 94: ...ity Operating 10 to 90 non condensing AC Input 100 to 240 V 50 60 Hz 0 8 A Power Supply Internal auto ranging transformer 100 to 240 VAC 50 to 60 Hz Power Consumption 28 Watts Maximum Current 0 25 A 1...

Page 95: ...e Loading HTTP in band Standards IEEE 802 3 2005 Ethernet Fast Ethernet Gigabit Ethernet IEEE 802 1Q Virtual LAN IEEE 802 1X Port Based Network Access Control 2001 ISO IEC 8802 3 Compliances CE Mark E...

Page 96: ...SPECIFICATIONS C 4...

Page 97: ...ber cable 1000BASE SX IEEE 802 3z specification for Gigabit Ethernet over two strands of 50 125 or 62 5 125 micron core fiber cable 1000BASE T IEEE 802 3ab specification for Gigabit Ethernet over 100...

Page 98: ...Detect is the communication method employed by Ethernet Fast Ethernet or Gigabit Ethernet End Station A workstation server or other device that does not forward traffic Ethernet A network communicati...

Page 99: ...yer specifications IEEE 802 3ab Defines CSMA CD access method and physical layer specifications for 1000BASE T Gigabit Ethernet Now incorporated in IEEE 802 3 2002 IEEE 802 3u Defines CSMA CD access m...

Page 100: ...Information Base MIB An acronym for Management Information Base It is a set of database objects that contains information about the device Media Access Control MAC A portion of the networking protocol...

Page 101: ...ion Transmission Control Protocol Internet Protocol TCP IP Protocol suite that includes TCP as the primary transport protocol and IP as the network layer protocol UTP Unshielded twisted pair cable Vir...

Page 102: ...GLOSSARY Glossary 6...

Page 103: ...ching 3 5 buffer size C 1 C cable Ethernet cable compatibility 3 2 labeling and connection records 4 8 lengths 4 7 cleaning fiber terminators 4 4 compliances EMC C 3 connectivity rules 10 Mbps 4 7 100...

Page 104: ...k 3 3 on a desktop or shelf 3 6 N network connections 4 1 examples 2 2 P package contents 3 3 passwords administrator setting 5 15 pin assignments B 1 1000BASE T B 5 100BASE TX 10BASE T B 2 port stati...

Page 105: ...hin a rack 3 4 troubleshooting in band access A 2 power and cooling problems A 2 switch indicators A 1 twisted pair connections 4 1 U user password 5 15 V VLANs tagging 2 5 W Web interface access requ...

Page 106: ...INDEX Index 4...

Page 107: ......

Page 108: ...GSW 2476 E082006 JC R01 149100011100H...

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