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4

P

ROBLEM

 S

OLVING

This chapter helps you to diagnose and solve problems you may have 
with the operation of your Switch. There is also an explanation of IP 
addressing.

The topics covered are:

■

Solving Problems Indicated by LEDs

■

Solving Hardware Problems

■

Solving Communication Problems

■

Solving Software Upgrade Problems

If you experience a problem that is not listed here, it may be included in 
the support section of the Superstack 3 Switch Management Interface 
Reference Guide on the CD-ROM that accompanies your Switch.

For Technical Support information, see 

Appendix D

.

DUA1720-3AAA03_online.book  Page 47  Monday, March 25, 2002  10:48 AM

Содержание 3C17203 - SuperStack 3 Switch 4400

Страница 1: ...http www 3com com Part No DUA1720 3AAA03 Published March 2002 SuperStack 3 Switch 4400 Getting Started Guide 3C17203 3C17204 3C17206 DUA1720 3AAA03_online book Page 1 Monday March 25 2002 10 48 AM...

Страница 2: ...licensed program or documentation contained in or delivered to you in conjunction with this User Guide Unless otherwise indicated 3Com registered trademarks are registered in the United States and may...

Страница 3: ...Switch 4400 Front View Detail 14 10BASE T 100BASE TX Ports 15 LEDs 15 Switch 4400 Rear View Detail 17 Power Socket 18 Redundant Power System Socket 18 Console Port 18 Expansion Module Slots 18 Defaul...

Страница 4: ...ch 41 Command Line Interface Management 41 Web Interface Management 42 SNMP Management 42 Setting Up Command Line Interface Management 43 CLI Management via the Console Port 43 CLI Management over the...

Страница 5: ...45 Pin Assignments 60 C TECHNICAL SPECIFICATIONS Switch 4400 24 port 63 Switch 4400 48 port 65 D TECHNICAL SUPPORT Online Technical Services 67 World Wide Web Site 67 3Com Knowledgebase Web Services 6...

Страница 6: ...DUA1720 3AAA03_online book Page 6 Monday March 25 2002 10 48 AM...

Страница 7: ...se by network administrators who are responsible for installing and setting up network equipment consequently it assumes a basic working knowledge of LANs Local Area Networks If the information in the...

Страница 8: ...the following syntax system password password In this example you must supply a password for password Commands The word command means that you must enter the command exactly as shown and then press Re...

Страница 9: ...at accompanies the Switch Release Notes These notes provide information about the current software release including new features modifications and known problems There are other publications you may...

Страница 10: ...e directory as a whole to maintain the structure of the files Product Registration You can register your SuperStack 3 Switch 4400 on the 3Com Web site http support 3com com registration frontpg pl Doc...

Страница 11: ...Switch 4400 and how it can be used in your network It covers summaries of hardware and software features and also the following topics About the Switch 4400 Switch 4400 Front View Detail Switch 4400...

Страница 12: ...t are supported by the Switch 4400 Table 3 Hardware features Feature Switch 4400 Addresses Up to 8000 supported Up to 64 permanent entries Auto negotiation Supported on all ports Auto MDI MDI X Forwar...

Страница 13: ...ration Supported Resilient Links Supported Aggregated Links Supported stack wide Broadcast Storm Control Supported Virtual LANs VLANs Support for up to 60 VLANs using the IEEE 802 1Q standard Multicas...

Страница 14: ...ew Detail Figure 1 Switch 4400 4400 SE front view 1 Figure 2 Switch 4400 4400 SE front view 2 The appearance of the overlays in Figure 1 and Figure 2 differ but the functionality is identical for both...

Страница 15: ...BASE T 100BASE TX Ports The Switch has 24 or 48 auto negotiating 10BASE T 100BASE TX ports configured as Auto MDIX cross over These ports automatically provide the appropriate connection Alternatively...

Страница 16: ...activity being received or transmitted Yellow Half duplex activity being received or transmitted Off No activity Module Status LEDs Green The Module is installed and supported The Link Status has bee...

Страница 17: ...4400 units but cannot be managed as part of that stack until all units have been upgraded to software version 2 0 or later Off A fault has occurred Power Self Test LED Green The Switch is powered up...

Страница 18: ...m RPS See Connecting a Redundant Power System on page 27 Console Port The console port allows you to connect a terminal and perform remote or local out of band management The console port uses a stand...

Страница 19: ...0 Automatic IP Configuration Enabled Port Status Enabled Port Speed 10 100 Mbps ports are auto negotiated Duplex Mode All fixed 10BASE T and 100BASE TX ports are auto negotiated Flow Control Enabled i...

Страница 20: ...20 CHAPTER 1 INTRODUCING THE SUPERSTACK 3 SWITCH 4400 DUA1720 3AAA03_online book Page 20 Monday March 25 2002 10 48 AM...

Страница 21: ...afety information provided in Appendix A of this guide AVERTISSEMENT Consignes de s curit Avant d installer ou d enlever tout composant du Switch 4400 ou d entamer une proc dure de maintenance lisez l...

Страница 22: ...AUTION Ensure that the ventilation holes are not obstructed When deciding where to position the Switch ensure that Cabling is located away from sources of electrical noise such as radios transmitters...

Страница 23: ...gh levels of AC noise for example air conditioning units and laser printers Rack mounting The Switch 4400 is 1U high and will fit in most standard 19 inch racks CAUTION Disconnect all cables from the...

Страница 24: ...h into the 19 inch rack and secure with suitable screws not provided Ensure that ventilation holes are not obstructed 6 Connect network cabling 7 Finally place a unit information label on the unit in...

Страница 25: ...g combinations are allowed 4 x 48 port Switches 3 x 48 port Switches and 2 x 24 port Switches 2 x 48 port Switches and 4 x 24 port Switches 1 x 48 port Switch and 6 x 24 port Switches 8 x 24 port Swit...

Страница 26: ...the following sequence of steps to power up the Switch 1 Plug the power cord into the power socket at the rear of the Switch 2 Plug the other end of the power cord into your power outlet The Switch p...

Страница 27: ...l of the ports on the front of the Switch 4400 are Auto MDIX that is they have a cross over capability The port can automatically detect whether it needs to operate in MDI or MDIX mode Therefore you c...

Страница 28: ...If you do not the cable s Electrostatic Discharge ESD may damage the Switch s port You can create a grounded port by connecting all wires at one end of a UTP cable to an earth ground point and the ot...

Страница 29: ...h can help you to improve the efficiency of the Switch and therefore the overall performance of your network This chapter explains the initial set up of the Switch and the different methods of accessi...

Страница 30: ...rk Manual IP Configuration You can choose to configure the IP information yourself The Switch remembers the information that you enter until you change it again or set the configuration method to Auto...

Страница 31: ...IP address is and it will be difficult to manage Most DHCP and BootP servers allow static IP addresses to be configured so that you know what IP address will be allocated to the Switch Refer to the do...

Страница 32: ...hoices of how to configure the IP information as shown in Table 9 Automatic Setup Your Switch must be online that is connected to a network You have two choices of how to view the allocated IP informa...

Страница 33: ...to a front panel port You must do this whilst the Switch is offline that is before you connect the Switch to a network Pre requisites A workstation running Windows 95 98 2000 or Windows NT A Network I...

Страница 34: ...roximately one minute 2 Open a suitable Web browser and enter 169 254 100 100 in the Location Address field This is the default IP address that is automatically assigned to an offline unit If there is...

Страница 35: ...plied with the terminal emulation software A suitable cable A standard null modem cable if you are connecting directly to the console port or A standard modem cable if you are connecting to the consol...

Страница 36: ...n that accompanies the terminal emulation software for more information Setting Up the Switch with IP Information You are now ready to manually set up the Switch with IP information using the command...

Страница 37: ...way IP address for the Switch The screen displays a summary of the information entered The initial set up of your Switch is now complete and the Switch is ready for you to set up your chosen managemen...

Страница 38: ...ery wizard 3Com Network Supervisor will auto discover the new Switch and display the IP information that has been automatically allocated to the Switch Most DHCP and BootP servers allow static IP addr...

Страница 39: ...ch via the console port To connect the cable a Attach the female connector on the cable to the male connector on the console port of the Switch b Tighten the retaining screws on the cable to prevent i...

Страница 40: ...x y where x is in the range 1 to 254 and y is in the range 0 to 255 2 The command line interface login sequence begins as soon as the Switch detects a connection to its console port If the login prom...

Страница 41: ...t up of your Switch you can decide how you wish to manage the Switch You can use one of the following methods Command line interface management Web interface management SNMP management Command Line In...

Страница 42: ...ng Up Web Interface Management on page 44 SNMP Management You can manage a Switch using any network management workstation running the Simple Network Management Protocol SNMP as shown in Figure 15 For...

Страница 43: ...l correctly installed on your management workstation You can check this by trying to browse the World Wide Web If you can browse the IP protocol is installed 3 Check you can communicate with the Switc...

Страница 44: ...ectly use one of the following Web browsers Netscape Navigator version 4 5 4 6 or 4 7 Microsoft Internet Explorer version 4 0 5 0 or 5 5 For the browser to operate the web interface correctly JavaScri...

Страница 45: ...n the management workstation The management workstation is connected to the Switch using a port in VLAN 1 the Default VLAN By default all ports on the Switch are in VLAN 1 You can use the 3Com Network...

Страница 46: ...o login and carry out initial Switch setup Changing Default Passwords You can change the default passwords using either The security device user modify command on the CLI or The Security Device User M...

Страница 47: ...by LEDs Solving Hardware Problems Solving Communication Problems Solving Software Upgrade Problems If you experience a problem that is not listed here it may be included in the support section of the...

Страница 48: ...problem The fault type will be indicated on the unit LEDs Contact your supplier for advice A link is connected and yet the Status LED for the port does not light Check that The Switch and the device...

Страница 49: ...s received 1 Power off the unit 2 Check that the air vents are not obstructed 3 Power cycle the unit To do this remove and reconnect the AC mains supply If the unit has no AC main supply remove and re...

Страница 50: ...d how to obtain a registered IP address IP Addressing To be managed correctly each device on your network for example a Switch or Hub must have a unique IP address IP addresses have the format n n n n...

Страница 51: ...ses in the series 192 160 100 X where X is a number between 1 and 254 with a subnet mask of 255 255 255 0 These suggested IP addresses are part of a group of IP addresses that have been set aside spec...

Страница 52: ...52 CHAPTER 4 PROBLEM SOLVING DUA1720 3AAA03_online book Page 52 Monday March 25 2002 10 48 AM...

Страница 53: ...avertissements pr sentent des consignes que vous devez respecter pour garantir votre s curit personnelle Vous devez respecter attentivement toutes les consignes Nous vous demandons de lire attentiveme...

Страница 54: ...ance inlet U S A and Canada The cord set must be UL approved and CSA certified The minimum specification for the flexible cord is No 18 AWG Type SV or SJ 3 conductor The cord set must have a rated cur...

Страница 55: ...0 only use a modem which is suitable for connection to the telecommunications system WARNING RJ 45 Ports These are shielded RJ 45 data sockets They cannot be used as standard traditional telephone soc...

Страница 56: ...rme la norme CEI 950 Ces conditions ne sont maintenues que si l quipement auquel il est raccord fonctionne dans les m mes conditions Etats Unis et Canada Le cordon doit avoir re u l homologation des U...

Страница 57: ...ou non prot g s avec des jacks prot g s ou non prot g s ces prises de donn es AVERTISSEMENT Si le module d expansion nest pas install veillez bien installer la plaque d obturation et serrez toutes le...

Страница 58: ...wenn auch die an das Ger t angeschlossenen Ger te unter SELV Bedingungen betrieben werden VORSICHT RJ 45 Porte Diese Porte sind gesch tzte Datensteckdosen Sie d rfen weder wie normale traditionelle T...

Страница 59: ...B PIN OUTS Null Modem Cable 9 pin to RS 232 25 pin PC AT Serial Cable 9 pin to 9 pin DUA1720 3AAA03_online book Page 59 Monday March 25 2002 10 48 AM...

Страница 60: ...gnal Function Ports configured as MDI 1 Transmit Data Bidirectional Data A 2 Transmit Data Bidirectional Data A 3 Receive Data Bidirectional Data B 4 Not assigned Bidirectional Data C 5 Not assigned B...

Страница 61: ...al Data B 2 Receive Data Bidirectional Data B 3 Transmit Data Bidirectional Data A 4 Not assigned Bidirectional Data A 5 Not assigned Bidirectional Data D 6 Transmit Data Bidirectional Data D 7 Not as...

Страница 62: ...62 APPENDIX B PIN OUTS DUA1720 3AAA03_online book Page 62 Monday March 25 2002 10 48 AM...

Страница 63: ...testing paras 2 1 2 2 2 30 and 2 32 Operational testing paras 2 1 2 2 2 30 and 2 13 Safety Agency Certifications UL 1950 EN60950 CSA 22 2 No 950 IEC 60950 EMC Emissions CISPRR 22 Class A EN55022 Clas...

Страница 64: ...N MIB II RFC 2021 Remote Monitoring MIB RFC 1757 MAU MIB RFC 2239 Terminal Emulation Telnet RFC 854 Protocols Used for Administration UDP RFC 768 IP RFC 791 ICMP RFC 792 TCP RFC 793 ARP RFC 826 TFTP R...

Страница 65: ...22 Class A EN55022 Class A FCC Part 15 Subpart B Class A ICES 003 Class A AS NZS 3548 Class A VCCI Class A CNS 13438 Class A EN61000 3 2 EN61000 3 3 Immunity EN 55024 Heat Dissipation 120 watts maximu...

Страница 66: ...66 APPENDIX C TECHNICAL SPECIFICATIONS DUA1720 3AAA03_online book Page 66 Monday March 25 2002 10 48 AM...

Страница 67: ...World Wide Web site enter this URL into your Internet browser http www 3com com This service provides access to online support information such as technical documentation and software as well as suppo...

Страница 68: ...ntenance application training and support services When you contact your network supplier for assistance have the following information ready Product model name part number and serial number A list of...

Страница 69: ...63 00798 611 2230 or 02 3455 6455 00798 611 2230 0080 611 261 001 800 611 2000 Europe Middle East and Africa From anywhere in these regions call 44 0 1442 435529 phone 44 0 1442 432524 fax Europe and...

Страница 70: ...cuador Mexico Paraguay Peru Uruguay Venezuela 0810 222 3266 511 241 1691 0800 133266 or 55 11 5643 2700 525 201 0004 562 240 6200 525 201 0004 525 201 0004 525 201 0004 525 201 0004 511 241 1691 525 2...

Страница 71: ...Repair 71 U S A and Canada 1 800 NET 3Com 1 800 638 3266 Enterprise Customers 1 800 876 3266 1 408 326 7120 not toll free Country Telephone Number Fax Number DUA1720 3AAA03_online book Page 71 Monday...

Страница 72: ...72 APPENDIX D TECHNICAL SUPPORT DUA1720 3AAA03_online book Page 72 Monday March 25 2002 10 48 AM...

Страница 73: ...ettings 19 users 46 E Ethernet address of the Switch 24 F factory defaults 19 H hardware features 12 I initial switch setup 32 installing the Switch 21 prerequisites 22 IP addressing registered 51 IP...

Страница 74: ...system 63 stacking a Switch 4400 25 straight through configuration 27 Switch 4400 3C number 24 automatic setup 38 console port 18 dimensions 63 Ethernet address 24 features 12 13 initial setup 32 inst...

Страница 75: ...iver Plug the equipment into a different outlet so that equipment and receiver are on different branch circuits If necessary the user should consult the dealer or an experienced radio television techn...

Страница 76: ...DUA1720 3AAA03_online book Page 76 Monday March 25 2002 10 48 AM...

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