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RSTP   57 

10

 

RSTP 

10.1

 

RSTP System Configuration 

 

 

This page enables you to setup the configuration of RSTP. 

RSTP

 is a protocol that prevents loops in 

the network and dynamically reconfigures which physical links in a switch should forward frames. 
The page is composed of two tables:  

•

 

RSTP System Configuration

 - Configure global system settings.  

•

 

RSTP Port Configuration

 - Setup port related settings.  

There are three main buttons associated with this page:  

•

 

HELP

 - Displays this window.  

•

 

APPLY

 - Updates the Switch configuration. No changes are made to the configuration until 

this button is pressed.  

•

 

REFRESH

 - Refreshes the page with the current RSTP configuration.  

Spanning Tree Introduction 

 
The Spanning Tree Algorithm (STA) can be used to detect and disable network loops, and to provide 
backup links between switches, bridges or routers. This allows the switch to interact with other 
bridging devices (that is, an STA-compliant switch, bridge or router) in your network to ensure that 
only one route exists between any two stations on the network, and provide backup links which 

 

Содержание 3CDSG8-US - OfficeConnect Managed Gigabit Switch

Страница 1: ...3Com OfficeConnect Managed Gigabit Switch User Guide 3CDSG8 www 3Com com Part Number 10016799 Rev BA Published July 2008 ...

Страница 2: ...he Software Technical data is provided with limited rights only as provided in DFAR 252 227 7015 Nov 1995 or FAR 52 227 14 June 1987 whichever is applicable You agree not to remove or deface any portion of any legend provided on any licensed program or documentation contained in or delivered to you in conjunction with this User Guide Unless otherwise indicated 3Com registered trademarks are regist...

Страница 3: ... the switch Provides information for configuring general system information including the user defined system name the user defined system location and the system contact Password Provides information on managing the passwords required to interface the web and console interfaces Tools Provides information on restoring the default settings and upgrading the firmware Port Settings Provides informati...

Страница 4: ...pts and terminology If release notes are shipped with your product and the information there differs from the information in this guide follow the instructions in the release notes Most user guides and release notes are available in Adobe Acrobat Reader Portable Document Format PDF or HTML on the 3Com Web site http www 3Com com ________________________________________________________________ Conve...

Страница 5: ... 1 1 System Identity 25 3 1 2 Address Information 25 3 1 3 Port Information 25 3 1 4 VLAN Information 26 3 2 Statistics 26 4 SYSTEM 29 4 1 Name 29 4 2 IP Address 30 4 3 Password 31 4 4 Tools 32 5 PORTS 34 5 1 Settings 34 5 1 1 Power Saving Mode 35 5 1 2 Speed Duplex 35 5 1 3 Flow Control 36 5 2 Storm Control 36 5 3 Port Mirroring 37 5 3 1 Port to Mirror to 38 5 3 2 Ports to Mirror 38 5 4 Cable Dia...

Страница 6: ...atus 59 10 2 1 RSTP Bridge Overview 59 10 2 2 RSTP Port Status 59 11 oS 61 Q 11 1 QoS Configuration 61 11 1 1 802 1p 62 11 1 2 DSCP 62 12 NMP 63 S 2 1 Settings 63 1 13 3Com Network Management 65 14 Device Specifications and Features 68 15 Pin Outs 73 16 3Com CLI Reference Guide 76 17 Troubleshooting 86 18 Obtaining Support for Your 3Com Product 89 19 Regulatory Notices 94 FCC STATEMENT 94 INFORMAT...

Страница 7: ...Web Interface Management Setting Up SNMP Management V1 or V2 Default Users and Passwords Upgrading Software using the CLI About the OfficeConnect Managed Gigabit Switch The OfficeConnect Managed Gigabit Switch is a Gigabit Ethernet switching product that delivers flexible three speed performance 10 100 1000 and advanced voice optimized features such as QoS VLANs and RSTP This makes the switch idea...

Страница 8: ...e frames Traffic Prioritisation Supported using the IEEE Std 802 1D 1998 Edition Two traffic queues per port Ethernet Fast Ethernet and Gigabit Ethernet Ports Auto negotiating 10 100 1000BASE T ports SFP Ethernet Ports Supports fiber Gigabit Ethernet long wave LX and fiber Gigabit Ethernet short wave SX in any combination Mounting Can be wall mounted _______________________________________________...

Страница 9: ...ort Status Port Status 8 SFP Green The SFP module has a valid link The LED flashed when traffic is transmitted or received OFF The SFP Module has no link Duplex Mode Duplex Yellow The port is in full duplex OFF The port is not connected or is connected at half duplex ________________________________________________________________ System Specifications Table 3 contains the system specifications of...

Страница 10: ...ly Safety and Regulatory Information AVVERTENZA Informazioni di sicurezza Prima di installare o rimuovere qualsiasi componente dal Switch o di eseguire qualsiasi procedura di manutenzione leggere le informazioni di sicurezza riportate 3Com Switch Family Safety and Regulatory Information OSTRZEŻENIE Informacje o zabezpieczeniach Przed instalacją lub usunięciem jakichkolwiek elementów z product lub ...

Страница 11: ...ed to do to get your switch set up and ready for management when it is in its default state Detailed procedural steps are contained in the sections that follow In brief you need to Configure IP information manually for your switch or View the automatically configured IP information CAUTION To protect your switch from unauthorized access you must change the default password as soon as possible even...

Страница 12: ...gure the IP information manually the switch remembers the information that you enter until you change it again You should use the Manual IP configuration method if You do not have a DHCP server on your network or You want to remove the risk of the IP address ever changing or Your DHCP server does not allow you to allocate static IP addresses Static IP addresses are necessary to ensure that the swi...

Страница 13: ...match the default settings for the switch which are 38 400 baud bits per second 8 data bits no parity 1 stop bit no hardware flow control Refer to the documentation that accompanies the terminal emulation software for more information 3 Power up the switch The Power on Self Test POST will be performed The OfficeConnect Managed Gigabit Switch takes approximately 30 seconds to boot Manually set the ...

Страница 14: ...atic IP configuration process usually completes within one minute 2 The command line interface login sequence begins as soon as the switch detects a connection to its console port 3 At the login prompt enter admin as your user name and press Return 4 At the password prompt press Return If you have logged on correctly is displayed 5 Enter IP summary to view a summary of allocated IP addresses The f...

Страница 15: ... or CMD prompt in the following format c ping xxx xxx xxx xxx where xxx xxx xxx xxx is the IP address of the switch If you get an error message check that your IP information has been entered correctly and the switch is powered up 4 Open your web browser and enter the IP address of the switch that you wish to manage in the URL locator for example in the following format http xxx xxx xxx xxx 5 At t...

Страница 16: ...r Switch establishing what IP address it is using and then launching your default web browser to connect directly to it The application will only locate your switch if it is on the same subnet as the PC on which the application is running It will not be able to locate your Switch if there is a router between your PC and the Switch The application is only designed to run on Windows operating system...

Страница 17: ...nnects the computer to the network or Switch click Next 3 You will then be offered the choice of searching the same subnet that your PC is on for a connected switch default or specifying an IP range Note that specifying a large range may take some time for the search to complete 4 Once your Switch or Switches have been located you will be presented with a list Select the switch you wish to connect...

Страница 18: ...ets informationen som är inkluderad med denna produkt i Support and Safety Information manualen Du kan hitta denna manual på den CD ROM som följde med din switch Du kan även ladda ner denna från 3Com hemsidan www 3Com com Importantes informations de securité Veuillez consulter les informations de securité qui se trouvent dans le manuel suivant Support and Safety Information celui ci est inclu avec...

Страница 19: ...ce errors therefore slowing down your network Water or moisture cannot enter the case of the unit Air flow around the unit and through the vents on the sides of the case are not restricted 3Com recommends that you provide a minimum of 25 mm 1 in clearance The air is as free from dust as possible Temperature operating limits are not likely to be exceeded It is recommended that the unit is installed...

Страница 20: ...itch Power problems can be the cause of serious failures and downtime in your network Ensure that the power input to your system is clean and free from sags and surges to avoid unforeseen network outages 3Com recommends that you install power conditioning especially in areas prone to blackout power dips and electrical storms Before powering on the Switch verify that the network cables and the powe...

Страница 21: ... the Switch and then power it on again Check the Status LED and see if POST was successfully completed Restore the default configuration the Switch Refer to the CLI commands appendix for instructions on using the System Restore Default command Reload the software CAUTION Resetting the Switch to its factory defaults erases all your settings You will need to reconfigure the Switch after you reset it...

Страница 22: ...vate the SFP port 1 Hold the transceiver so that the fiber connector is toward you and the product label is visible Ensure the wire release lever is closed in the upright position 2 Gently slide the transceiver into the SFP slot until it clicks into place CAUTION SFP transceivers are keyed and can be properly inserted only one way If the transceiver does not click when you insert it remove it turn...

Страница 23: ...________________________________________ Performing Spot Checks At frequent intervals you should visually check the Switch Regular checks can give you an early warning of a possible failure any problems can then be attended to when there will be least effect on users 3Com recommends periodically checking the cabling including the power adapter and it s connections ...

Страница 24: ...e configuration of the switch There are five different tables on this page System Identity Displays general information about the switch Address Information Displays the IP Address configuration of the switch Port Information Displays the configuration of every port on the switch ...

Страница 25: ...is table contains one row for each port on the switch Each row is divided into eight columns as follows Port The front panel port number Type All ports on this switch are 10 100 1000BASE T Link Status Up indicates that the port is connected to another device Down indicates there is no connection The front panel image that is always visible at the top of the page also displays this information Spee...

Страница 26: ...se statistics can be used to identify potential problems with the switch such as a faulty port or unusually heavy loading All values displayed have been accumulated since the last system reboot but can be reset to zero by clicking the CLEAR button The current statistics are not displayed until you click the REFRESH button Parameter Description Interface Statistics Received Octets The total number ...

Страница 27: ...tted Unicast Packets The total number of packets that higher level protocols requested be transmitted to a subnetwork unicast address including those that were discarded or not sent Transmitted Errors The number of outbound packets that could not be transmitted because of errors Received Normal Priority Packets The total number of received packets that set as High Priority in the QoS settings Tran...

Страница 28: ...tets excluding framing bits but including FCS octets and had either an FCS or alignment error 64 Bytes Frames The total number of frames including bad packets received and transmitted that were 64 octets in length excluding framing bits 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...

Страница 29: ...h location The System Location can be up to 24 characters long System Contact The contact name for the switch The System Contact can be up to 24 characters long Note The System Name System Location and System Contact will accept all characters on the keyboard ie numbers upper case and lower case letters and keyboard symbols There are three main buttons associated with this page HELP Displays this ...

Страница 30: ...your PC Gateway IP Address The dot separated IPv4 Gateway address used by the switch If in doubt set this to be the same as the Default Gateway address used by your PC Note If DHCP is enabled the word Fallback will be added to the front of the other parameter names to indicate the usage of a manually assigned IP Address Note If you change the IP address used by the switch you will lose contact wit...

Страница 31: ... There is no default password New Password Your new password up to 16 characters long Passwords are case sensitive Confirm Password Re enter the new password to ensure it has been entered correctly Note Can be up to 16 characters long and can consist of any alphanumeric characters Passwords are case sensitive Note It is extremely important that you do not forget your password If you forget your pa...

Страница 32: ...y Defaults Forces the switch to restore the original factory settings To reset the switch select Reset to Factory Defaults from the drop down list and click APPLY Upgrade Firmware Upgrades the switch system firmware using a file provided by 3com 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 upgrade the se...

Страница 33: ...ch select from the Tools drop down list and then click APPLY The reset will be complete when the user interface displays the login page There are two main buttons associated with this page HELP Displays this text APPLY Updates the switch configuration No changes are made to the configuration until this button is pressed BROWSE Navigates to a file Note that the Browse command is not applicable to a...

Страница 34: ...for each port and four columns The columns are Port The front panel port number of the port This cannot be changed Speed Duplex A combined data rate and duplex setting for the port Flow Control Used to control congestion and to minimize the number of dropped packets There are three main buttons associated with this page HELP Displays this text APPLY Updates the switch configuration No changes are ...

Страница 35: ... the switch can power down the port on the switch to save the power that would normally be wasted when no cable was connected When a device is connected to the switch it will power the port back up to ensure normal operation Note The power saving modes have been rigorously tested to ensure that your OfficeConnect switch meets and exceeds all the applicable industry standards When power saving mode...

Страница 36: ...ow Control column the switch will attempt to slow incoming traffic down when traffic levels are high It does this by sending special Pause packets on full duplex connections or creating back pressure deliberately causing collisions on half duplex connections This can increase traffic throughput by reducing the number of dropped packets and as a result the number of resends that are required Howeve...

Страница 37: ...e switch When the threshold is exceeded packets are dropped irrespective of the flow control settings There are three main buttons associated with this page HELP Displays this text APPLY Updates the switch configuration No changes are made to the configuration until this button is pressed CANCEL All changes made to the page are discarded and the switch configuration remains unchanged 5 3 Port Mirr...

Страница 38: ...ort can be selected The tick box of the selected port will be cleared and disabled see the Ports to Mirror section Note Broadcast and Multicast packets are not mirrored since they are flooded to all ports anyway 5 3 2 Ports to Mirror There are four columns in this table Two are titled Port and two are titled Mirroring Enabled Port The front panel port number Mirroring Enabled This field is associa...

Страница 39: ...t the port number from the drop down list Cable Status Shows the cable length operating conditions and isolates a variety of common faults that can occur on Category 5 twisted pair cabling Note Due to a hardware issue Port 8 cannot display cable diagnostic information There are two main buttons associated with this page HELP Displays this text APPLY Updates the switch configuration No changes are ...

Страница 40: ... in a column of its own The columns are Port The front panel port number Not a Trunk Member If the radio button in this column is selected the port is not a member of any trunks This is the default state Trunk T1 T4 These columns correspond to the 4 trunks that are supported by the switch Clicking on the radio button in any one of these columns causes the port to become a member of the correspondi...

Страница 41: ...regate link A port trunk offers a dramatic increase in bandwidth for network segments where bottlenecks exist as well as providing a fault tolerant link between two devices To create a trunk or add a port to an existing trunk from the TRUNKS Membership page 1 Under one of the trunk columns Trunk T1 to Trunk T4 click the tick box of the port you would like to add to the trunk You can choose a maxim...

Страница 42: ...w Control Used to control congestion and to minimize the number of dropped packets Member Ports The individual ports that go together to make the trunk i e the members of the trunk Note When configuring a trunk all member ports are configured identically There are three main buttons associated with this page HELP Displays this text APPLY Updates the switch configuration No changes are made to the ...

Страница 43: ...vice to the switch Note In full duplex mode both ends of a connection can send traffic at the same time which effectively doubles the available throughput In half duplex mode only one end of the connection can send traffic at any one time 6 2 2 Flow Control When Flow Control is selected on a port by clicking on the tick box in the Flow Control column the switch will attempt to slow incoming traffi...

Страница 44: ...s all other ports will be placed in a standby mode Should one link in the trunk fail one of the standby ports will automatically be activated to replace it The LACP Table has one row for each port and three columns The columns are Port The front panel port number LACP Enabled on Port Allows LACP to be enabled or disabled When the box is checked LACP is enabled Key Value 0 255 0 means auto generate...

Страница 45: ...n the Link Aggregation Groups LACP Port Status Information includes Protocol Active Partner Port Number and Operational Port Key There are two main buttons associated with this page HELP Displays this text REFRESH Reloads the current page with the latest configuration settings 6 4 1 Aggregation Information The following information is displayed for Link Aggregation Groups Aggregation Group Display...

Страница 46: ...ation is displayed for LACP port status Port Displays the ID number of the LACP group Protocol Active Shows if the port is a member of the active LACP group Partner Port Number The port number on the device in the LACP group that is attached to this port Operation Port Key The current operational value of the key for the LACP group ...

Страница 47: ...ld After clicking the ADD button you will be directed to the 802 1Q VLAN Group page to add port members to the VLAN Each row of the table corresponds to one VLAN There are four main buttons associated with this page HELP Displays this text ADD Creates a VLAN with the inputted VLAN ID MODIFY Choose a VLAN to modify DELETE Delete a VLAN from the VLAN table 7 1 1 Introduction to VLANs VLANs or Virtua...

Страница 48: ...Each VLAN must be given a VLAN ID in the range 1 4094 A port can be a member of up to 64 VLANs All packets travelling through the switch are associated with one and only one VLAN If a port is not a member of a VLAN it cannot send or receive packets associated with that VLAN A tagged packet carries its VLAN ID in the payload of the packet An untagged packet received on a port with Packet Type set t...

Страница 49: ...roperly If you are unfamiliar with VLANs please see the Introduction to VLANs Each row of the table corresponds to one port or trunk trunked ports cannot be configured individually The columns of the table are used as follows Port Trunk The front panel port number or the ID of a trunk VLAN Aware Enabled VLAN aware ports are able to use VLAN tagged frames to determine the destination of the frame C...

Страница 50: ...kets Default 1 There are three main buttons associated with this page HELP Displays this text APPLY Saves the settings to memory and updates the configuration No changes are made to the switch s configuration until this button is pressed REFRESH Reloads the current page with the latest configuration setting ...

Страница 51: ...e and possibly gain access to sensitive network data With IEEE 802 1X 802 1X access to all switch ports in a network can be centrally controlled from a server which means that authorized users can use the same credentials for authentication from any point within the network There are three main buttons associated with this page HELP Displays this text APPLY Updates the switch configuration No chan...

Страница 52: ...itch port Reauthentication Period Sets the time period after which a connected client must be re authenticated EAP timeout The time the switch shall wait for the supplicant response before re transmitting a packet Port Setting Port The port number Admin State Sets the authentication mode to one of the following options o Auto Requires a 802 1X aware client to be authorized by the authentication se...

Страница 53: ...the port that you want to view here Authenticator counters General statistics for authenticator Backend Authenticator counters General statistics for RADIUS server 802 1X MIB counters MIB module defined for 802 1X There are two main buttons associated with this page HELP Displays this text REFRESH Resends the information ...

Страница 54: ...nooping Configuration Configure global system settings IGMP Snooping VLAN Configuration Configure VLAN related settings There are three main buttons associated with this page HELP Displays this text APPLY Updates the switch configuration No changes are made to the configuration until this button is pressed REFRESH Reloads the current page with the latest configuration settings 9 1 1 IGMP Snooping ...

Страница 55: ...is cannot be changed All ports have a Port VLAN ID PVID of 1 All ports can send and receive both VLAN tagged and untagged packets i e they are hybrid ports 9 1 2 IGMP VLAN Configuration The table has one row for each port and four columns The columns are VLAN ID The VLAN ID It can not be changed IGMP Snooping Enabled When enabled the port will monitor network traffic to determine which hosts want ...

Страница 56: ...s The columns are VLAN ID VLAN ID number 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 received v1 Report packets v2 Reports Show the number of received v2 Report packets v3 Reports Show the number of received v2 Report packets v3 Leave Show the numbe...

Страница 57: ...ated with this page HELP Displays this window APPLY Updates the Switch configuration No changes are made to the configuration until this button is pressed REFRESH Refreshes the page with the current RSTP configuration Spanning Tree Introduction The Spanning Tree Algorithm STA can be used to detect and disable network loops and to provide backup links between switches bridges or routers This allows...

Страница 58: ...ng a configuration message before attempting to reconfigure That also means the maximum life time for a BPDU frame Number between 6 40 default is 20 Forward Delay The maximum time in seconds the root device will wait before changing states i e discarding to learning to forwarding Number between 4 30 default is 15 Force Version Set and show the RSTP protocol to use Normal use RSTP Compatible compat...

Страница 59: ...e Overview table has one row to display settings for the whole switch Hello Time Maximum Age and Forward Delay are displayed Topology shows the switch current state Root ID indicates the root port ID for the switch 10 2 2 RSTP Port Status The table has one row for each port and seven columns The columns are Port Trunk Port Trunk ID number VLAN ID VLAN IDs of the port Path Cost Show the path cost o...

Страница 60: ...60 RSTP Port State Show the current port state blocking forwarding learning etc ...

Страница 61: ...fic is dropped before higher priority frames Head of queue blocking maybe encountered by using this mode WRR In this mode all priorities can be guaranteed a share of the bandwidth when the system is overloaded The bandwidth sharing percentage can be adjusted by specifying the four QOS class with different ratio in WRR Weight which appears after WRR is enabled in Queue Mode Note WRR is selectable w...

Страница 62: ...al priority All Medium Priority to set all values to medium priority or select All High Priority to set all values to high priority Use Custom if you want to set each value individually Note Because end stations like PCs are not usually VLAN aware they do not create VLAN tagged frames As a result this method of prioritization is not ideal when there are a lot of PCs connected to the Switch 11 1 2 ...

Страница 63: ...ers so that key events are reported by this switch to your management station SNMP trap destination specifies the IP address of the trap manager SNMP Read Community A community string that acts like a password and permits access to the SNMP protocol The read community string specifies read only access Authorized management stations are only able to retrieve MIB objects SNMP Write Community Specifi...

Страница 64: ...P APPLY Updates the switch configuration No changes are made to the configuration until this button is pressed CANCEL All changes made to the page are discarded and the switch configuration remains unchanged ...

Страница 65: ...ation that graphically discovers maps and monitors the network and links It maps devices and connections so you can easily Monitor stress levels Set thresholds and alerts View network events Generate reports in user defined formats Launch embedded device configuration tools 3NS is configured with intelligent defaults and the ability to detect network misconfigurations It can also offer optimizatio...

Страница 66: ... Network Access Manager leverages the advanced desktop security capabilities of 3Com switches and wireless access points using IEEE 802 1X or RADA desktop authentication to control both user and computer access to the network To find out more about 3Com Network Access Manager go to www 3com com NAM ________________________________________________________________ 3Com Enterprise Management Suite 3C...

Страница 67: ...w Network Node Manager The kit includes Object IDs icons MIBs and traps for 3Com devices The package supports both Windows platforms and UNIX or Solaris platforms It can be installed as a standalone plug in to HP OpenView or used with a 3Com management application such as 3Com Enterprise Management Suite EMS To find out more about 3Com Integration Kit for HP OpenView Network Node Manager go to www...

Страница 68: ... 60950 1 IEC 60950 1 EMC Emissions EN55022 Class A AS NZS CISPR 22 Class A FCC Part 15 Subpart B Class A ICES 003 Class A EN61000 3 2 EN61000 3 3 ICES 003 Class A EMC Immunity EN55024 ________________________________________________________________ Environmental Operating Temperature 0 to 40 C 32 to 104 F Storage Temperature 40 to 70 C 40 to 158 F Humidity 0 95 non condensing Standard EN 60068 IEC...

Страница 69: ...s the ports to do the following Advertise their abilities Acknowledge receipt and understanding of the common modes of operation that both devices share Reject the use of operational modes that are not shared by both devices Configure each port for the highest level operational mode that both ports can support Automatic MAC Addresses Aging MAC addresses from which no traffic is received for a give...

Страница 70: ...considered too long of a response time for many applications The Fast Link option bypasses this delay and can be used in network topologies where forwarding loops do not occur Full 802 1Q VLAN Tagging Compliance IEEE 802 1Q defines an architecture for virtual bridged LANs the services provided in VLANs and the protocols and algorithms involved in the provision of these services An important requir...

Страница 71: ...e Authentication Protocol EAP Port based Virtual LANs Port based VLANs classify incoming packets to VLANs based on their ingress port Port Mirroring Port mirroring monitors and mirrors network traffic by forwarding copies of incoming and outgoing packets from a monitored port to a monitoring port Users specify which target port receives copies of all traffic passing through a specified source port...

Страница 72: ...tocol TCP TCP connections are defined between 2 ports by an initial synchronization exchange TCP ports are identified by an IP address and a 16 bit port number Octets streams are divided into TCP packets each carrying a sequence number TFTP Trivial File Transfer Protocol The device supports boot image software and configuration upload download via TFTP Virtual Cable Testing VCT detects and reports...

Страница 73: ...5 PIN OUTS ________________________________________________________________ Null Modem Cable RJ 45 to RS 232 25 pin _______________________________________________________________________ PC AT Cable RJ 45 to 9 pin ...

Страница 74: ...00 and 1000BASE T RJ45 Connections Pin Assignment Table 7 Pin Assignments Pin Number 10 100 1000 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 Bidirectional Data C 6 Receive Data Bidirectional Data B 7 Not assigned Bidirectional Data D 8 Not assigned Bidirectio...

Страница 75: ...Receive Data Bidirectional 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 assigned Bidirectional Data C 8 Not assigned Bidirectional Data C ...

Страница 76: ... format to 8 data bits 1 stop bit and no parity 4 Set Flow Control to none 5 Under Properties select VT100 for Emulation mode 6 Select Terminal keys for Function Arrow and Ctrl keys Ensure that the setting is for Terminal keys not Windows keys Logging on to the CLI The Login process requires a User Name and Password The default user name for first time configuration is admin No password is require...

Страница 77: ...lowing commands System Restore Default System Reboot Console Password IP Setup IP Status IP Ping IP Dhcp IP tftpget The command section is divided into three sub sections System Console IP You can navigate into each section by typing one of the above names Each section has a number of sub commands You can enter the full command from the top of the menu structure for example IP Ping or you can ente...

Страница 78: ...r the command Commands at top level System System commands Console Console commands IP IP commands IP IP Commands at IP level IP Setup ipaddress ipmask ipgateway vid IP Status IP Ping n count w timeout ipaddress IP Dhcp enable disable IP tftpget server ip filename System Restore Default The System Restore Default command resets the device configuration to factory defaults Adding the keepIP option ...

Страница 79: ...onfiguration Activating new configuration System System Reboot The System Reboot command simulates a power cycle of the device Syntax System reboot Default Configuration This command has no default configuration User Guidelines The system does not prompt for confirmation of the request Example The following displays the list presented for the system reboot command System reboot System Booting imag...

Страница 80: ...ary to restore the unit back to factory defaults See the System Restore Command Example The following displays the list presented for the Console password command console Console password admin Console password Password admin Console IP Setup The IP Setup command allows the user to display the IP address settings or to define a manual IP address on the device Syntax IP setup ipaddress ipmask ipgat...

Страница 81: ... the list presented for the IP Setup command reviewing and assigning a manual IP address IP setup Address 169 254 17 16 Subnet Mask 255 255 0 0 Gateway 0 0 0 0 VID 1 IP dhcp disable IP setup 192 168 1 2 255 255 255 0 192 168 1 1 IP setup Address 192 168 1 2 Subnet Mask 255 255 255 0 Gateway 192 168 1 1 VID 1 IP IP Status The IP Status command allows the user to display the IP address settings on t...

Страница 82: ...meters count the number of echo requests to send timeout timeout in seconds to wait for each reply ipaddress IP address to ping Default Configuration This command has no default configuration User Guidelines The maximum timeout is 60 seconds Example The following displays the list presented for the IP Ping command IP ping n 2 w 10 192 168 1 1 Reply from 192 168 1 1 packet 1 time 7 ms Reply from 19...

Страница 83: ...192 168 1 1 packet 1 time 7 ms Reply from 192 168 1 1 packet 2 time 8 ms IP IP tftpget The IP tftpget command starts a firmware download for system upgrading or replacing corrupted firmware Syntax IP tftpget tftp server ip address filename Parameters tftp server ip address the address of the workstation hosting the tftp server filename the name of the software to be downloaded Default Configuratio...

Страница 84: ... backup configuration file or the current runtime software to a tftp server Syntax IP tftpput config image tftp server ip address filename Parameters config Selects the backup configuration option image Selects the software image backup option tftp server ip address the address of the workstation hosting the tftp server filename the name of the file being saved Default Configuration This command h...

Страница 85: ...n backup file is not a text file and cannot be edited Example The following displays the list presented for the ftppput command IP tftpput config 192 168 1 backup_config TFTP transfer starting File transfer completed IP IP tftpput image 192 168 1 1 runtime bin TFTP transfer starting File transfer completed IP ...

Страница 86: ... the problem is detected and what are the possible causes of the problem With the problem known the effect of the problem is recorded with all known results from the problem Once the problem is quantified the solution is applied Solutions are found either in this chapter or through customer support If no solution is found in this chapter contact Customer Support ___________________________________...

Страница 87: ...tware settings Replace the serial cable Replace serial cable for a pin to pin straight flat cable Reconfigure the emulation software connection settings Response from the terminal emulations software is not readable Faulty serial cable Software settings Replace the serial cable Reconfigure the emulation software connection settings Self test exceeds 15 seconds The device may not be correctly insta...

Страница 88: ...me admin no password by entering the safe mode when the switch is booting up When the switch is booting up immediately after the first message Booting image 0 is displayed press together the Control Shift and keys If you have been successful you will see the output below on the console interface If you do not get the Entering safe mode displayed power cycle the switch and try again Booting image 0...

Страница 89: ...3Com com 3Com Knowledgebase Helps you to troubleshoot 3Com products This query based interactive tool is located at http knowledgebase 3com com It contains thousands of technical solutions written by 3Com support engineers ________________________________________________________________ Purchase Extended Warranty and Professional Services To enhance response times or extend warranty benefits conta...

Страница 90: ... of system hardware and software including revision level Diagnostic error messages Details about recent configuration changes if applicable To send a product directly to 3Com for repair you must first obtain a return materials authorization number RMA Products sent to 3Com without authorization numbers clearly marked on the outside of the package will be returned to the sender unopened at the sen...

Страница 91: ... this region at this email address apr_technical_support 3com com Or request a return material authorization number RMA by FAX using this number 61 2 9937 5048 or send an email at this email address ap_rma_request 3com com Country Telephone Number Europe Middle East and Africa Telephone Technical Support and Repair From anywhere in these regions not listed below call 44 1442 435529 From the follow...

Страница 92: ...slands AT T 800 988 2112 Cayman Islands AT T 800 988 2112 Chile AT T 800 988 2112 Colombia Colombia Local AT T 800 988 2112 571 592 5000 Costa Rica AT T 800 988 2112 Curaço AT T 800 988 2112 Dominican Republic AT T 800 988 2112 El Salvador AT T 800 988 2112 Equator AT T 800 988 2112 French Guyana AT T 800 988 2112 Grenada AT T 800 988 2112 Guadalupe AT T 800 988 2112 Guatemala AT T 800 988 2112 Gu...

Страница 93: ...he URL http lat 3com com lat support form html Portuguese speakers enter the URL http lat 3com com br support form html English speakers in Latin America should send an e mail to lat_support_anc 3com com Country Telephone Number US and Canada Telephone Technical Support and Repair All locations Network Jacks Wired 1 847 262 0070 All other 3Com products 1 800 876 3226 ...

Страница 94: ...different branch circuits If necessary the user should consult the dealer or an experienced radio television technician for additional suggestions The user may find the following booklet prepared by the Federal Communications Commission helpful How to Identify and Resolve Radio TV Interference Problems This booklet is available from the U S Government Printing Office Washington DC 20402 Stock No 0...

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