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Dual-Speed Stackable Hubs User’s Guide

Master Hub Setup and Management

64

NOTE:

The CLEAR COUNTER action only resets the
counters for the statistics display; the underly-
ing counters (i.e., MIB variables) are not
cleared.

Displaying Segment Statistics

The hub stack collects network transmission statistics for each segment in the
stack. You can choose to view them from the Statistics menu, accessible
under the Network Monitoring menu.

♦

StatsPkts. This statistic displays the number of packets received from
the network, including error packets.

♦

BroadcastPkts. This statistics counts the number of good broadcast
packets received on the segment.

♦

MulticastPkts. This statistics counts the number of good multicast
packets received on the segment.

♦

CRCAlignErrors. This statistic counts the number of valid length
packets (64 to 1518 bytes) that had a bad Frame Check Sequence
(FCS).

♦

UndersizePkts. This statistic counts the number of well-formed
packets that were smaller than 64 octets.

♦

OversizePkts. This statistic counts the number of well-formed pack-
ets that were longer than 1518 octets.

♦

Fragments. This statistic counts the number of ill-formed packets
less than 64 octets and all events without a start-of-frame delimiter re-
gardless of their length.

♦

Jabbers. This statistic counts the number of jabber events on the
segment.

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Summary of Contents for 2624ix - Hub - Stackable

Page 1: ...DFE 2600 Series Ethernet Fast Ethernet Dual Speed Managed Unmanaged Stackable Hubs User Guide Rev 03 December 1998 6DFE2600M 03 Printed In Taiwan RECYCLABLE ...

Page 2: ...tems Inc All other trademarks belong to their respective proprietors Copyright Statement No part of this publication may be reproduced in any form or by any means or used to make any derivative such as translation transformation or adaptation without permission from D Link Corporation D Link Systems Inc as stipu lated by the United States Copyright Act of 1976 ...

Page 3: ...gen die sich am Ger en befinden sind zu beachten 12 Wird das Ger er einen l geren Zeitraum nicht benutzt sollten Sie es vom Stromnetz trennen Somit wird im Falle einer erspannung eine Besch igung vermieden 13 Durch die L tungs fnungen d fen niemals Gegenst de oder Fl sigkeiten in das Ger gelangen Dies k nte einen Brand bzw Elektrischen Schlag ausl en 14 fnen Sie niemals das Ger Das Ger darf aus Gr...

Page 4: ...number Purchaser may also propose special procedure as may be suitable to the case After an RMA number is issued the defective product must be packaged securely in the original or other suitable shipping package to ensure that it will not be damaged in transit and the RMA number must be promi nently marked on the outside of the package The package must be mailed or otherwise shipped to D Link with...

Page 5: ...are product within or without the scope of D Link s applicable product documenta tion will be corrected D Link Offices for Registration and Warranty Service The product s Registration Card included at the back of this manual must be completed and sent to a D Link office To obtain an RMA number for warranty service on a hardware product or software product contact the D Link office nearest you An a...

Page 6: ...ng This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to Part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with...

Page 7: ...ODUCTION 1 Product Description 1 Product Features 2 Dual Speed Ethernet Hub Technology Overview 4 2 UNPACKING AND SETUP 6 Unpacking 6 Identifying External Components 7 Front Panel 7 Rear Panel 9 Installing the Hub 10 Installation 10 Rack Mounting 11 Replacing the Power Supply 12 3 UNDERSTANDING INDICATORS 15 Hub State Indicators 16 ...

Page 8: ...ort Connection 24 Hub to End Station Connection 25 Hub to Hub Uplink 27 Optional Module Connections 29 Module Installation 30 Switch Module DFE 260S 31 Fiber Optic Module DFE 260FX 31 Fast Ethernet Module DFE 260TX 32 5 MASTER HUB SETUP AND MANAGEMENT 35 Navigation and Conventions 36 In Band Setup Instructions 37 Backup Master Function 38 Segmenting Hubs 39 Logging in to the Hub Console 41 Logging...

Page 9: ... Monitoring the Hub Stack 60 Displaying Port and Group Statistics 61 Displaying Segment Statistics 64 Node Tracking 66 Per Port Intrusion Security 67 Bridge Information 67 Resetting the Hub 68 System Reset 69 Factory Reset 69 6 WEB BASED NETWORK MANAGEMENT 71 Introduction 71 Getting Started 72 Management 72 Configuration 73 Performance 79 Fault 82 User 89 RMON 92 7 CABLES AND CONNECTORS 111 100BAS...

Page 10: ...Dual Speed Stackable Hubs User s Guide x 8 SPECIFICATIONS 119 General 119 Hub to Hub Cascading 120 LED Indicators 120 Environmental and Physical 120 9 GLOSSARY 123 ...

Page 11: ... hubs capable of managing an entire hub stack All x models have both features The model numbers also indicate how many ports a particular hub has thus 2616 hubs have 16 ports and 2624 hubs have 24 ports Conventions References in this manual to the DFE 2616 DFE 2616x DFE 2624 DFE 2624x DFE 2616i DFE 2616ix DFE 2624i and DFE 2624ix hubs are fre quently written simply as ub or ubs where the text appl...

Page 12: ...er 4 Making Connections Provides information on connecting to the hub twisted pair and console ports stacking hubs and linking with other 100BASE TX hubs Chapter 5 Master Hub Setup and Management Provides information on using the management agent built into master models in the 2600 series Chapter 6 Web based Network Management Provides detailed in formation on managing the network through an inte...

Page 13: ...d or IEEE 802 3u 100BASE TX connections twisted pair Fast Ethernet operating at 100 megabits per second All of the twisted pair ports support NWay auto negotiation allowing the hub to automatically detect the speed of a network connection This means you can connect all of your Ethernet and Fast Ether net hosts to a DFE 2600 series hub stack without any rewiring required when a host is upgraded fro...

Page 14: ...ave two slots for accepting slide in modules Product Features The list below highlights the features and specifications of the DFE 2600 series hubs Compatible with the IEEE 802 3 10BASE T Ethernet and 802 3u 100BASE TX Fast Ethernet industry standards for interoperability with other Ethernet Fast Ethernet network devices Ethernet connections support Category 3 or better twisted pair cables Fast Et...

Page 15: ...ta collision detection and handling Preamble regeneration signal retiming Two proprietary daisy chain ports for cascading up to five hubs to form one logical hub management provided via a master hub Standby backup master capability when two master model hubs are present within a single stack Uplink port allows easy linking of two Fast Ethernet or four Ethernet hub stacks to further expand your net...

Page 16: ...rs And collision domains can be easily interconnected through switching hubs and bridges to form a network large enough to encompass a high rise building or campus environment A dual speed hub is actually two repeaters in one housing Any device that is plugged into the hub is automatically connected by NWay to the fastest repeater it can use The 10 Mbps repeater receives Ethernet transmissions fro...

Page 17: ...separate collision domains re gardless of whether a switching circuit is present If a DFE 2600 series hub or hub stack is uplinked through a twisted pair or Uplink port to another dual speed or Fast Ethernet hub or stack the hub will function as a Class II Fast Ethernet device and be subject to those connectiv ity rules If it is uplinked to a 10BASE T Ethernet hub or stack 10Mbps only then it will...

Page 18: ...ing Open the shipping carton of your hub and carefully unpack the contents The carton should contain the following items One dual speed stackable hub One AC power cord suitable for your area electrical power con nections One daisy chain cable Four rubber feet to be used for shock cushioning Six screws and two mounting brackets D View module diskette master models only This User Guide ...

Page 19: ...nents This section identifies all the major external components of the hub Both the front and rear panels are shown followed by a description of each panel fea ture The indicator panel is described in detail in the next chapter Front Panel DFE 2624i DFE 2624ix Front Panel DFE 2624 DFE 2624x Front Panel DFE 2616i DFE 2616ix Front Panel DFE 2616 DFE 2616x Front Panel ...

Page 20: ...ction will be detected automatically If you need to connect to another device with MDI X ports such as another hub or an Ethernet switch you should use a cross over cable or connect using the Uplink port described below For more information about crossover connection see the Crossover Cables section on page 112 Uplink Port The Uplink port is an MDI port which means you can connect the hub or hub s...

Page 21: ...n cascading a set of D Link stackable dual speed hubs this port should be connected to the Daisy Chain OUT port of the previous hub in the stack usually placed immediately above it A cascade of five hubs can be created in this way The first and last hubs in the stack use only one of the daisy chain ports while the others use both Daisy Chain OUT Port Works in conjunction with the Daisy Chain IN Po...

Page 22: ...all the hub stack may greatly affect its performance When installing consider the following pointers Install the hub stack in a fairly cool and dry place See Appendix D Specifications for the acceptable temperature and humidity operating ranges Install the hub stack in a site free from strong electromagnetic field generators such as motors vibration dust and direct exposure to sunlight Leave at le...

Page 23: ... protect the hub case from scratching Rack Mounting The hub can be mounted in an EIA standard size 19 inch rack which can be placed in a wiring closet with other equipment Attach the mounting brackets at the hub front panel one on each side and secure them with the provid ed screws Then use screws provided with the equipment rack to mount each hub in the rack ...

Page 24: ...eps below to replace it 1 Disconnect the power cord from the AC outlet 2 Disconnect the power cord from its connector on the rear of the hub 3 Using a Phillips screwdriver remove the screws securing the power supply to release the unit 4 Remove the power supply by sliding it out the rear of the chassis Do not plug in the power supply when it is outside the chassis Doing so could cause personal inj...

Page 25: ... 13 5 Slide the replacement power supply into the chassis engaging the connector carefully 6 Attach the power cord to the connector of the power supply and con nect the other end of the power cord to the AC supply source ...

Page 26: ......

Page 27: ...fore connecting network devices to the hub take a few minutes to look over this section and familiarize yourself with the front panel LED indicators of your dual speed hub depicted below DFE 2624i DFE 2624ix Indicator Panel DFE 2616i DFE 2616ix Indicator Panel ...

Page 28: ... power otherwise it is off Collision Indicators COL10 and COL100 These indicators indicate data collisions on the respective 10Mbps Ether net or 100Mbps Fast Ethernet segments of the hub If several hubs are stacked or linked together all of them should detect and indicate the same collision since collisions span the entire network segment Whenever a collision is detected the respective COL indicat...

Page 29: ...lable ID number which is then added to each hub factory serial number encoded on an EEPROM memory chip The hub ID is then permanently assigned In an unmanaged stack all slave models all IDs will read 0 and no permanent ID assignment is made In a stack with a master intelligent model the master hub will detect the other hubs in the stack and auto matically assign ID numbers which are then permanent...

Page 30: ...eive blinking green When information is received on a port its indicator will blink off briefly Upon reception the data will be transmitted to all other connected ports Auto partition blinking amber The indicator of a port blinks amber when the port is automatically parti tioned due to an abnormal network condition The hub will temporarily partition a port when too many line errors or too many col...

Page 31: ...ndicator comes on when the SNMP agent of a DFE 2600 series master hub is active In a stack with both a Primary and a Backup Master the SNMP LED of the Primary master will be lit and will flash to indicate SNMP activity The SNMP LED of the Backup Master will remain off at all times Port Speed Indicators There is also a port speed indicator for each of the twisted pair ports on the hub A port speed ...

Page 32: ...connected to the console s RS 232 serial port us ing a normal serial cable OR 2 The console computer is on line and connected to the on board con sole program either through terminal emulation or a TELNET session Refer to Chapter 4 Making Connections for directions on establishing a connection with the diagnostic port and Chapter 5 Master Hub Setup and Management for information about how to use t...

Page 33: ...logical hub In this configuration the interconnected hubs constitute a single repeater providing a maximum of 120 twisted pair ports Use the provided daisy chain cable to connect the Daisy Chain OUT port on the rear panel of one hub to the Daisy Chain IN port on the hub below it as shown in the figure below Repeat this procedure for each hub to be included in the stack Each time a new hub is added...

Page 34: ...s User s Guide Making Connections 22 Hubs should not be added to the stack or removed from the stack while the power is on to any hub in the stack Note Always turn off power to the entire stack be fore adding or removing hubs ...

Page 35: ...int to point link segments e g 10BASE T or 10BASE FL while the remaining segments may be populated mixing segments e g 10BASE 2 or 10BASE 5 Fast Ethernet 100Mbps networks have the following connectivity rules The maximum length of a twisted pair segment that is the distance between a port in the hub to a single address network device such as a PC server or Ethernet switch is 100 meters Cabling and...

Page 36: ... an RS 232 serial port DTE on a PC acting as a console all you need is a straight serial cable as shown in the diagram below Note that a DCE to DTE connection requires a straight serial cable not a null modem cable You can use the diagnostic port on a DFE 2600 series master hub to connect a VT100 compatible terminal or a computer running an ordinary terminal emulation program such as the terminal ...

Page 37: ... management or D View included with DFE 2600 series master hubs for in band or out of band management Other SNMP management software will also work fine A console device can only manage a DFE 2600 series hub if it is stacked with a DFE 2600 series master hub Use either the on board console pro gram or an SNMP based network management program to manage the stack Hub to End Station Connection After ...

Page 38: ...ke it easier to transition all stations to 100Mbps You can connect any combination of PCs servers and other single address network devices to the twisted pair ports using straight through twisted pair cables These cables should not be crossed over The following figure illus trates the pin assignments for a straight through cable When connecting a PC or a server the system being connected should ha...

Page 39: ...k port Linking hubs using normal twisted pair ports requires crossover twisted pair cables linking using one normal twisted pair port and the Uplink port requires an ordinary straight through twisted pair cable The Uplink port is shared with Port 1 and they cannot be used at the same time The following table describes different methods of linking hubs ...

Page 40: ...e been crossed The figure below shows the pin assignments for an Ethernet or Fast Ethernet crossover cable NOTE The port 1 1X jack shares its circuitry with the Uplink jack If you connect a hub to the Uplink jack you cannot plug anything into the 1X jack And the reverse is also true if any thing is plugged into the 1X jack the Uplink jack cannot be used When uplinking two dual speed or Fast Ethern...

Page 41: ...umber of hubs or hub stacks in the network to two and the total network diameter to 205 meters If a DFE 2600 series hub or hub stack is linked through a twisted pair or Uplink port to a 10Mbps only Ethernet hub or hub stack the connection speed will be 10Mbps the maximum number of hubs stacks in the network will be four and the total network diameter can be 500 meters maximum assuming the entire n...

Page 42: ... the DFE 260S module can only be installed in Slot 1 the center slot 2 Using a screwdriver undo the two screws and remove the dust cover on the module slot 3 Holding the module component side up and connector side in gently slide the module along the guides and seat it in the internal connector 4 Using a screwdriver replace the two screws and tighten until snug We recommend that you retain the dus...

Page 43: ...260S switch module may be used to provide increased reliability through redundancy The software manage ment agent can control the DFE 260S modules to provide link redundancy and pre vent network loops but only when multiple modules are installed in hubs on the primary master segment Fiber Optic Module DFE 260FX The Fiber Optic module provides a standard Fast Ethernet 100BASE FX fiber optic connect...

Page 44: ...t is in Half Duplex mode The duplex mode DIP switch allows you to set the fiber optic lines to Full Duplex mode operation Only the right hand switch number 2 is active Use it to set the duplex mode Fast Ethernet Module DFE 260TX The Fast Ethernet module provides one additional twisted pair Fast Ethernet connection A twisted pair connection of this kind is particularly useful for creating a link be...

Page 45: ...s lit when the port is properly connected to a pow ered on device and blinks when packets are being received by the module Collision his LED blinks when there are packet collisions on the mod ule line FDX his LED is lit when the port is set for Full Duplex transmit and receive When the LED is off the port is in Half Duplex mode NOTE Because the DFE 260TX module port is an NWay UTP port once the hu...

Page 46: ... Making Connections 34 erate at 100Mbps in the duplex mode se lected The duplex mode DIP switch allows you to set the port to Full Duplex mode operation Only the right hand switch number 2 is active Use the DIP switch to set the duplex mode ...

Page 47: ...ocol You can use this program to perform many basic network management functions The console program also allows you to prepare the hub for management using D View or another SNMP based network management system This chapter describes how to use the console program to access the hub change its settings and monitor its operation Note that if you want to manage the hub in band you need to follow the...

Page 48: ... all variables that can be changed but wherein possible values are preset The Delete and Backspace keys remove entered text as in most software packages Pressing Ctrl r refreshes the current screen Screen Conventions Fields that cannot be changed are preceded by a colon Toggle changed fields are surrounded by angle brackets Variables with values that must be keyed in are surrounded by square brack...

Page 49: ...ogram There are two ways to initially assign an IP address to a master hub using BootP and by using a Console connection to the Diagnostic Port Assigning an IP Address Using BOOTP If your Fast Ethernet network has a BOOTP BOOTstrap Protocol server you need only add the hub Ethernet MAC address which is printed on a sticker on the bottom of the hub or which you can determine using the master hub co...

Page 50: ...en choose EXIT 5 If you will be using TFTP to download a hub configuration file choose Software Update and toggle the Software Update Control to Enable using the Space Bar Again choose SAVE and then EXIT 6 Choose Execute Bootstrap to restart the hub If you are using a backup master hub reconnect the RS 232C cable to the backup master and repeat the same procedures listed above the backup master mu...

Page 51: ... Hubs Switching hub technology has made it more common to segment local area networks into smaller pieces to reduce congestion Segmenting makes it easier to balance network loads since a smaller number compete for the bandwidth available A hub stack makes network management convenient but too many stations on a single network segment may give slow response at peak network loads Therefore this hub ...

Page 52: ...figure below shows a stack divided into three separate collision domains Hubs three and four are isolated from the main segment collision domain one using the hub s segmentation capability putting them into their own isolated collision domains two and three respectively A switch bridge or router can be used to connect the three collision domains so that traffic can pass between them yet keeping th...

Page 53: ...a switch or bridge to join different segments be sure to enable the IEEE 803 1d Spanning Tree Protocol to prevent temporary network loops Logging in to the Hub Console The DFE 2600 series master hubs support user based security that allows you to prevent unauthorized users from accessing the hub or changing its settings This means that before you can access the functions of the hub you will need t...

Page 54: ...nter NOTE When the hub is shipped the default user name is D Link and the default password is also D Link You will need to use this user name and password when you first set up your hub or if you use the Factory Reset NVRAM to Default Value menu selection Change this user name and password to protect the se curity of your hub There are two levels of user privilege Super User and General User The d...

Page 55: ...nsole Configuration User Account Change SNMP Trap Manager Configuration SNMP Manager Configuration System Reset Software Update Factory Reset NV RAM to Default Value LOGOFF Changing Your Password To change your user password follow these steps 1 Choose User Account Change from the main menu 2 Select Change Password The following screen will be displayed ...

Page 56: ...E EXIT 3 Type in your user name and press Enter 4 Type in your old password and press Enter 5 Type in the new password you have chosen and press Enter Type in the same new password again in the next blank space to verify what you typed 6 Choose SAVE to put the new password into effect 7 Choose EXIT to exit this screen This method can also be used by a Super User to change another user password ...

Page 57: ... an IP address so that you can access the hub console through a network see the first section of this chapter Saved changes to any of the fields on this menu take effect the next time the system is restarted Fields that can be set include Interface This parameter displays the type of interface the hub will use for management communications IP Address This parameter determines the IP address used b...

Page 58: ... determines whether or not the hub should send out a BOOTP request when it is powered up The BOOTP protocol allows IP addresses network masks and default gateways to be assigned from a central BOOTP server if this option is set to es the hub will first look for a BOOTP server to provide it with this information before using local settings DFE 2600 Stackable Hub TCP IP Parameters Configuration Menu...

Page 59: ...sed the next time the hub is restarted It applies only when the serial port is being used for out of band SLIP management it does not apply when the port is used as a console port Available speeds are 1200 2400 9600 and 19200 bits per second Out of Band Dial Up Phone Number This information is stored as a reference for the benefit of the system manager and does not cause the hub to dial out System...

Page 60: ... well as updated versions of its internal firmware using TFTP the Trivial File Transfer Protocol and BOOTP the BOOTstrap Protocol You can use the Software Update menu to control this feature The fields you can set on this menu are Software Update This parameter determines whether or not the hub will try to look for the configuration file over the network If set to Disable the parameters below beco...

Page 61: ...sed only if your boot protocol is TFTP ONLY if you are using BOOTP TFTP mode or if Use BOOTP to get IP after start up is en abled the pathname will be obtained from the BOOTP server For more information about the DFE 2600 series master hub configuration file see Appendix C Boot Configuration File DFE 2600 Stackable Hub Software Update Menu Software Update Disable Software Update Mode Network Boot ...

Page 62: ...to the MIB II object sysContact and is used to note the name and contact information of the person responsible for administering the hub Display Timeout An additional setting the console time out may be used to automatically log out the console interface after a predetermined period of inactivity This feature increases hub security by preventing ac cess to the hub after the interface has been inad...

Page 63: ...etwork hub configuration that may effect other parts of the network Traps are sent only to selected network management hosts The hub allows up to four different hosts to receive traps from the system DFE 2600 Stackable Hub SNMP Trap Manager Setting Menu IP Address SNMP Community String Status Invalid Invalid Invalid Invalid HELP SAVE EXIT The following trap parameters can be set IP Address This pa...

Page 64: ...thentication trap provided this feature has not been dis abled The DFE 2600 series master hubs allow up to four different community names to be defined and the access rights for each community can be sepa rately set to either read only or read write The status for each string can be toggled to either valid or invalid The community names public and private are defined by default you can change thes...

Page 65: ...et you delete the currently logged in user to prevent you from accidentally deleting all users with Super User privileges making it impossible to change important hub settings Only users with Super User privileges can add and delete users Add a User To add a new user perform these steps 1 Choose User Account Change from the main menu The following screen will appear DFE 2600 Stackable Hub User Acc...

Page 66: ...FE 2600 Stackable Hub User Account Change Create New User User Name Password Confirm Password Access Level Super User HELP SAVE EXIT 4 Choose SAVE and press Enter to let the user addition take effect 5 Choose EXIT to leave the Create New User menu Delete a User To delete a user follow these steps 1 Choose User Account Change from the main menu 2 Choose Change Access Delete Users from the User Acco...

Page 67: ...D Link Super User Active No N A N A N A HELP SAVE EXIT 4 Choose SAVE and press Enter to let the user deletion take effect 5 Choose EXIT to leave the Delete Users menu Primary Backup Master The Primary Backup Master Hub screen accessible from the Network Monitoring menu is used to display the stack management status of each master hub in the stack Fields in this screen are for information only and ...

Page 68: ...EXIT Hub Stack Management Several important hub parameters useful in the day to day management of the hub can be viewed and controlled using the Group Configuration and Port State menus Controlling Hubs in the Hub Stack The Group Configuration Menu screen found under the Network Monitoring menu displays information about each of the hubs in the stack Note In this context roup means ub The items di...

Page 69: ...roup Port Capacity This field shows the total number of network ports on the hub Note When modules with additional ports are in stalled in DFE 2600 series hubs the Port Capacity number will automatically adjust to reflect the added ports The management software does not discriminate any type of added or removed port will change the Port Capacity number Group Hardware Revision This field shows the ...

Page 70: ...no module in stalled the field will display one Group Isolate Provides control of the hub current network con nection status and allows the system manager to manually isolate a particular hub as needed and reconnect it later Toggling the field to solate separates the hub data connection from the other hubs Toggling the field to econnect re establishes the connection See egmenting Hubs earlier in t...

Page 71: ...his field displays Up if there is a station connected to the port otherwise it displays Down Link Test State This field displays Enable if the port link status is to be auto detected and displayed otherwise it displays Disable This variable is user configurable Receive Polarity This field always displays Normal if the hub is op erating properly Auto Partition This field displays Yes if the port ha...

Page 72: ... 1 Connector Type UTP Port Status Port State Link Test Up Link Test State Enable Receive Polarity Normal Auto Partition On Admin State Enable Port Speed 100M Speed Capability Auto PREV GROUP NEXT GROUP PREV PORT NEXT PORT HELP SAVE EXIT You can use PREV GROUP and NEXT GROUP to switch to another hub or PREV PORT and NEXT PORT to switch to another port You can also enter the port Group ID and Port I...

Page 73: ... Group Statistics Port Statistics EXIT The data categories provided for both port and group statistics are the same They are Frames Too Long This statistic counts frames longer than the 1518 byte octet limit set by the Ethernet standard This problem is likely caused by software errors Very Long Events This statistic counts events where a signal is re ceived that is longer than the jabber lockup pr...

Page 74: ...c counts otherwise valid frames that fail the CRC check Alignment Errors This statistic counts otherwise valid frames that did not end on a byte octet boundary Readable Frames This statistic counts valid frames Multicast This statistic counts the number of good multicast packets received Multicast events are messages sent from one node to multi ple nodes on the segment Broadcast This statistic cou...

Page 75: ...istic counts the total number of bytes oc tets included in valid readable frames DFE 2600 Stackable Hub Network Monitoring Port Statistics Current Group ID 1 Current Port ID 9 Pkts Pkts Sec Pkts Pkts Sec Frames Too Long 0 0 Readable Frames 484447 0 Very Long Events 0 0 Multicast 7393 0 Short Events 0 0 Broadcast 305460 0 Late Events 0 0 Auto Partition 0 0 Runt Frames 2632 0 DRM 0 0 Collision 8514 ...

Page 76: ...is statistics counts the number of good broadcast packets received on the segment MulticastPkts This statistics counts the number of good multicast packets received on the segment CRCAlignErrors This statistic counts the number of valid length packets 64 to 1518 bytes that had a bad Frame Check Sequence FCS UndersizePkts This statistic counts the number of well formed packets that were smaller tha...

Page 77: ...ts 191996500 0 Next Monitoring Segment ID 1 PREV SEG NEXT SEG CLEAR COUNTER EXIT Collisions This statistic counts the number of collisions on the seg ment 64 Octs This statistic displays the number of packets both good and bad that were 64 octets long 65 127 Octs This statistic displays the number of packets both good and bad that were 65 127 octets long 128 255 Octs This statistic displays the nu...

Page 78: ...tatistic displays the total number of octets contained in valid frames received on this segment Node Tracking The Node Tracking screen displays the origination MAC addresses of pack ets received by each node connected to the hub for the last 12 receives DFE 2600 Stackable Hub Network Monitoring Node Tracking Information Group ID 1 Port ID 1 Source MAC Source MAC PREV GROUP NEXT GROUP PREV PORT NEX...

Page 79: ...rt the port is disabled and the network manager is notified Bridge Information The bridge information screen allows the network administrator to view the install and operation status of all bridging modules within a segment To avoid non terminating network data loops only one bridging module at a time can be active The hub stack management software always enables the module installed in the highes...

Page 80: ...program to reset the hub stack either doing a system reset which restarts the hubs and is identical to powering them off and back on again or a factory reset which resets the master hub reverts all of its parameters back to their factory default values and restarts the entire hub stack Important Note If it is necessary for you to power off the hub or hub stack and then re start it instead of using...

Page 81: ...t follow these steps 1 Choose System Reset from the main menu The following confirma tion message will appear DFE 2600 Stackable Hub System Reset Are you sure you want to reset No Yes 2 Move the cursor to Yes to confirm the reset and press Enter After a few seconds delay the hub should restart Factory Reset Before performing a factory reset be absolutely certain that this is what you want to do On...

Page 82: ...Factory Reset NVRAM to Default Value from the main menu A confirmation message similar to that for the System Reset will appear 2 Move the cursor to Yes to confirm the reset and press Enter After a few seconds delay the hub should restart and all of its parameters will revert to their default values Note Doing a factory reset to the Primary Master al so resets the Backup Master variables except fo...

Page 83: ... hypertext interface allows users to manage the hub from anywhere on the network through a standard browser such as Net scape Navigator Communicator or Microsoft Internet Explorer The web browser acts as a universal access tool and can communicate directly with the Hub using HTTP protocol Your web browser screen may vary with the screen shots pictures in this guide NOTE This Web based Management M...

Page 84: ...ructions on page 39 or defined in the Boot Configuration File see Appendix B Management To begin managing your hub stack simply run the web browser you have in stalled on your computer and open the IP address you have defined for the master hub In the page that opens click on the Login to DFE 2600 series Web based Management button This opens the main page in the management module The top of the m...

Page 85: ...n below The main page contains a list of buttons along the top of it labeled Configu ration Performance Fault User RMON and Help These are the major categories for hub management Clicking on one of the categories causes a list of options to appear on the left side of the main window All categories and options are explained below Configuration This is the first left most category and is opened by d...

Page 86: ...nt of time that the hub stack has been pow ered on System Contact Name of the person to contact should there be any problems questions with the system System Name A user assigned name for the hub System Location A user assigned description for the physical location of the hub Runtime Software Version Version number for the resident and downloadable software PROM Firmware Version Version number for...

Page 87: ...tion about each interface to the de vice The information is described as follows IP Address The Internet address for the device Subnet Mask The subnet mask determines the level of the subnet that the hub is on Default Gateway The default router for the device MAC Address The ethernet address for the device Interface Type The media protocol ...

Page 88: ...tion that should re ceive traps from the hub stack Community This is the SNMP community name to authenticate the receiving of traps Delete This will remove a trap receiver from the trap receiving table To add a Trap Receiver to the list simply type the IP Address and Commu nity Name in the appropriate boxes and click on the Add button SNMP Manager Configuration The SNMP Manager Configuration scree...

Page 89: ...ined SNMP community name Access Right The permitted access using the SNMP community name Delete Click this to delete the community name Software Download The Software Download screen allows you to cause an immediate update of the hub parameters and or firmware ...

Page 90: ...Hub should download its configuration file the next time the Hub is booted Boot File The path and configuration file name on the TFTP server If you are using bootp tftp mode or if Get IP From BOOTP Server is en abled the pathname will be obtained from the BOOTP server Boot Server Address The IP address of the TFTP server where the configuration file is located Boot Protocol Set to either bootp tft...

Page 91: ...the Statistics or Utilization options on the left causes a representation of your hub to be shown see example below Click on any feature of the representation to see Statistics or Utilization figures about it Statistics The Hub allows you to collect network statistics on individual ports 10Mbps segments Seg 1 100Mbps segments Seg 2 and any Hub in the stack by clicking on the hub ID number ...

Page 92: ...Counts valid frames that are broadcast to all stations on the network MulticastPkts Pkts Counts valid frames that are sent to multicast Ethernet addresses CRC AlignErrors Pkts Counts otherwise valid frames that did not end on a byte octet boundary UndersizePkts Pkts Counts packets received that were less than 64 octets long excluding framing bits but including FCS octets and were otherwise well fo...

Page 93: ...egral number of octets Alignment Errors Jabbers Pkts Counts frames longer than the maximum 1518 bytes octets with either bad framing or an invalid CRC Collisions Pkts Counts transmission collisions on the Ethernet seg ment The Hub also collects packet distribution statistics categorizing Ethernet frames by length 64 Octs Pkts 65 127 Octs Pkts 128 255 Octs Pkts 256 511 Octs Pkts 512 1023 Octs Pkts ...

Page 94: ...ments 100Mbps segment 1 and the 10Mbps seg ment 2 When you choose a segment to observe a graph appears showing the usage of that segment as a percentage of the total bandwidth see example below Utilization is calculated and plotted every 10 seconds A one hour utilization history can be shown by the graph Fault The operations described in this section allow you to manage the Hub while it is operati...

Page 95: ...how your hub or stack on the screen On the stack simply click on any item you wish to configure including an individual port a hub by clicking on the Hub ID number the console and the switch see the example below Port Configuration Clicking on any twisted pair port will show the current configuration infor mation of the port ...

Page 96: ... and taken offline or not Speed Indicates the port speed 100Mbps or 10Mbps Polarity Status Indicates the polarity status normal or reversed Link Test Function State Indicates whether the port link test is en abled or disabled If enabled the port will check for link pulses and will only transmit if there is a good link to another station Administration State Indicates the port partition status eith...

Page 97: ...a trap if it speed changes Group Hub Configuration Clicking on a Hub ID number will show the current configuration informa tion for that Hub Information displayed on this screen includes Serial Number This is a unique hardware serial number of the Hub Description Information about the hub Slot 1 Slot 2 Type These indicate the type of module if present in the back slot of the Hub Repeater Type Deta...

Page 98: ...b A status change occurs when the Hub goes online or offline Isolated Reconnected Group This is an option to isolate or reconnect the Hub to the hub stack Out of Band Console Configuration Clicking on the word Console which will appear on the representation of the hub stack if a console is present allows the Hub diagnostic port to be con figured The diagnostic port can be set to Console in band fo...

Page 99: ...ting You can choose to select Console or Out of band management upon reboot Baud Rate Defined in cps characters per second it shows the con nection speed between the Hub and the console Character Size This is the number of bits in the byte unit of the in formation exchange between Hub and console manager Stop Bit This bit marks the end of a unit of transmission normally a byte or character ...

Page 100: ... Slots 1 2 Configuration When slots 1 or 2 are occupied by either a DFE 260FX Fiber Optic Module shown on the graphic representation of the hub as SwFx or a DFE 260TX Fast Ethernet Module SwTp clicking on the words SwFx or SwTp causes the following configuration screen to be shown Information displayed includes Port Type This item shows either Sw Tx for a Fast Ethernet module or Sw Fiber for the F...

Page 101: ...to the values stored in EEPROM Click RESET to reset the Hub User The User menu allows you to monitor and configure a number of settings for individual ports User List Clicking on the User List option on the left side of the screen displays a rep resentation of your hub stack Clicking on one of the ports displays the Ethernet MAC addresses of packets recently received by the port and when they were...

Page 102: ...mitted on the port in terms of System Uptime SysUpTime Intrusion To display this screen click User then Intrusion The Hub intrusion secu rity feature can be used to dedicate a port to a given piece of hardware If a different device read Network Interface Card transmits to the port the hub can be set to either partition the port send a trap notification to the network manager or both The device ide...

Page 103: ... the station allowed to use this port Detected MAC Address This is the Ethernet MAC address of the last frame received by the port Attribute This indicates MAC address type always Action The action to be taken in event of intrusion on the port send trap partition send trap partition or no action Auto Learn Can set auto learning to enable or disable Delete Click this to delete and disable a port in...

Page 104: ...s switched back to the master link A maximum limit of 3 back up are allowed per Hub Hub ID Select a Hub from the hub stack Master Back Up Port Enter the port ID numbers to create a back up pair Active Displays None if both ports are inactive Master if master port is active and Back Up if back up port is active Status Select Valid to enable the pair else Invalid to disable the pair RMON RMON is an ...

Page 105: ...eering Task Force to provide a standard protocol for moni toring and managing different groups of information over a network The features of RMON are organized into cohesive collections simply called groups These groups are the basic unit of conformance The D Link devices utilize four key RMON groups These four groups are described in the table below Group Name Description Statistics Contains stat...

Page 106: ...l tool to detect potential network performance degradation before it gets out of control Increasing network availability for the user and the in crease in productivity of network administrators are key benefits of implementing RMON technology Statistics The Statistics group contains statistics measured by the probe for each monitored Ethernet interface on the hub These statistics take the form of ...

Page 107: ... the Statistics Table there is no benefit or disad vantage in choosing a specific index value Data Source ifIndex This entry identifies the source of the data that this entry is configured to analyze This source can be any Ethernet in terface on the device Owner This entry is the entity that initiated the entry and is using the resources assigned to it Other functions of the Control Table are as f...

Page 108: ...ounter begins at zero Clicking on the Refresh button resets the counter The different statistics and datum are described below Drop Events The total number of events in which packets were dropped by the probe due to lack of resources Note that this number is not necessarily the number of packets dropped it is just the number of times this condition has been detected Octets The total number of octe...

Page 109: ...hat were less than 64 octets long excluding framing bits but including FCS octets and were otherwise well formed Oversize Packets The total number of packets received that were longer than 1518 octets excluding framing bits but including FCS octets and were otherwise well formed Fragments The total number of packets received that were less than 64 octets in length excluding framing bits but includ...

Page 110: ... between 256 and 511 octets in length inclusive ex cluding framing bits but including FCS octets 512 1023 Octets The total number of packets including bad pack ets received that were between 512 and 1023 octets in length inclusive excluding framing bits but including FCS octets 1024 1518 Octets The total number of packets including bad pack ets received that were between 1024 and 1518 octets in le...

Page 111: ...ifies this entry Other than numerical position in the Control Table there is no benefit or dis advantage in choosing a specific index value Data Source ifIndex This entry identifies the source of the data that this entry is configured to analyze This source can be any Ethernet in terface on the device Owner This entry is the entity that initiated the entry and is using the resources assigned to it...

Page 112: ...ton Sta tistics are organized in a table shown below History Table The History Table shown below is an historical sampling of Ethernet sta tistics on a particular Ethernet interface The History Control Group sets parameters for the History Statistics Group for a regular collection of these samples These samples are collected in historical data entries called buck ets each poll interval The differe...

Page 113: ...g FCS octets between 64 and 1518 octets inclusive but had either a bad Frame Check Sequence FCS with an integral number of octets FCS Error or a bad FCS with a non integral number of octets Alignment Error Undersize The number of packets received during this sampling inter val that were less than 64 octets long excluding framing bits but including FCS octets and were otherwise well formed Oversize...

Page 114: ...est estimate of the total number of collisions on this Ethernet segment during this sampling interval Utilization The best estimate of the mean physical layer network utili zation on this interface during this sampling interval in hundredths of a percent Alarm The Alarm Group periodically takes statistical samples from variables in the probe and compares them to previously configured thresholds If...

Page 115: ...ld be taken in the case of Delta sampling the interval should be set short enough that the sampled variable is very unlikely to increase or decrease by more than 2 31 1 during a single sampling in terval Variable The object identifier of the particular variable to be sampled Sample Type The method of sampling the selected variable and cal culating the value to be compared against the thresholds If...

Page 116: ...s the Alarm Rising Threshold Rising Index The index number that is used when a rising threshold is crossed The number identified by a particular value of this index should be the same as the Event index number identified in the Event group If there is no corresponding entry in the Event Table then no association exists In particular if this value is zero no associated event will be generated as ze...

Page 117: ...egment and Segment 2 is the 10Mbps segment Variable The object identifier of the particular variable to be sampled Only variables that resolve to an ASN 1 primitive type of INTEGER INTEGER Counter Gauge or Time Ticks may be sampled Interval The interval in seconds over which the data is sampled and compared with the rising and falling thresholds When setting this vari able care should be taken in ...

Page 118: ...value is less than or equal to this threshold and the value at the last sampling interval was greater than this threshold a single event will be generated After a falling event is generated another such event will not be generated until the sampled value rises above this threshold and reaches the Rising Threshold Rising Event Index The Event index number that is used when a rising threshold is cro...

Page 119: ...nt entry is fired by an associated condition located else where in the MIB in the case of this software utility the Alarm Group To define a set of parameters that describe an event to be generated when certain conditions are met enter the appropriate information in the fields to wards the bottom of the Event window and click on the Add button or use Add under the Alarm Table which will automatical...

Page 120: ... entity that configured this entry and is therefore using the resources assigned to it Description A comment describing the event entry Type The type of notification that the probe will make about the event In the case of log an entry is made in the log table for each event In the case of snmp trap an SNMP trap is sent to one or more management stations Community If an SNMP trap is to be sent it w...

Page 121: ... Log Table is generated and maintained by an Event entry in the Event Table and can not be manipulated by any other entity Log entries are described by the following Index An index number that uniquely identifies an event Description This contains a description of the event that activated this log entry Log Time The value of sysUpTime when this log entry was created ...

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Page 123: ...ctors Cable characteristics 0 4 to 0 6 mm 22 to 26 AWG 4 pair only two pairs four wires are used for 100BASE TX Category 5 un shielded twisted pair or EIA TIA 568 compliant 100 ohm shielded twisted pair Maximum segment length 100 meters Maximum network diameter 205 meters Connectors RJ 45 ...

Page 124: ... connecting the hub to another switch bridge or hub through the UTP port a modified crossover cable is necessary With a cross over cable two pairs of wires are switched at one connector end Carry out the following steps to create a customized crossover twisted pair cable 1 Leave one end of the cable as is with the RJ 45 connector intact The wiring at just one end of the cable needs to be modified ...

Page 125: ...232 DB 25 connectors is provided for con nections with 25 pin console devices RS 232 DB9 Pin Specification The RS 232 serial port of the hub uses a 9 pin female connector The port can be connected to a VT 100 terminal a PC or a workstation emulating a VT 100 terminal The figures below show the connections necessary for connection to 9 pin and 25 pin RS 232 devices ...

Page 126: ...PC Serial Port DTE DB 9 Console Port DCE DB 9 9 RXD 2 TxD 3 DTR 4 SG 5 DSR 6 RTS 7 CTS 8 DCD 1 9 RXD 2 TxD 3 DTR 4 SG 5 DSR 6 RTS 7 CTS 8 DCD 1 Terminal PC Serial Port DTE DB 25 Console Port DCE DB 9 9 RXD 2 TxD 3 DTR 4 SG 5 DSR 6 RTS 7 CTS 8 DCD 1 RXD 3 TxD 2 DTR 20 SG 7 DSR 6 RTS 4 CTS 5 DCD 8 ...

Page 127: ...s can be managed in a single place The configuration file is a text file usually stored on the server with a CFG extension It can be up to 10 KB long Lines beginning with are consid ered comments which are ignored by the hub All other lines are commands which are interpreted by the master hub The configuration file commands accepted by the hub are sysname string Takes string as the System Name cor...

Page 128: ...he serial port communication rate used when the port is being used in out of band mode Legal values for the parameter n are 2400 4800 9600 and 19200 2600h image string Takes string which may be up to 64 characters long as the filename of the image file to be downloaded from the TFTP server When the hub boots it will load the given image file from the server and execute it This command may be used ...

Page 129: ...he maximum allowed The community name can be up to 32 characters long Permissions can be read for read only community access or write for read write community access clear ip trap manager table Deletes all entries from the hub trap manager list ip trap manager address community Adds the host at address to the hub SNMP trap manager list Four entries is the maximum allowed Traps sent to the host wil...

Page 130: ...e Hub Web based Management User s Guide Boot Configuration File 118 Sets the hub node age timer to n seconds Node aging is used with the hub security option to determine how long to keep entries in the node tracking table ...

Page 131: ... CD Network Data Transfer Rate Fast Ethernet 100Mbps Ethernet 10Mbps Number of Ports 16 DFE 2616i DFE 2616ix DFE 2616 DFE 2616x or 24 DFE 2624i DFE 2624ix DFE 2624 DFE 2624x 10BASE T 100BASE TX ports Network Media Ethernet Category 3 or better UTP cable 100m maxi mum Fast Ethernet UTP STP Cat 5 100 ohm twisted pair 100m maximum for hub to station links UTP Cat 5 100 ohm UTP STP 5m maximum for hub ...

Page 132: ...tatus Power 10Mbps collision 100Mbps collision 10Mbps utiliza tion 100Mbps utilization module link Port Status per port Link Activity Auto Partition Manual Partition Speed 10 100Mbps Environmental and Physical Power Supply 100 to 240 VAC 50 or 60 Hz internal universal power supply Power Consumption DFE 2616 25 5 watts maximum DFE 2616x 27 watts maximum DFE 2624 34 watts maximum DFE 2624x 35 watts ...

Page 133: ...m Dimensions 441mm 237mm 55mm 1 25 U height 19 inch rack mountable Weight 3 87kg 8 53 lbs Operating Temperature 0 to 40 C Storage Temperature 25 to 55 C Humidity 5 to 95 non condensing DC Fan 40mm 40mm Emissions FCC Class A CE VCCI Class A C Tick Safety UL CSA CE Mark T GS ...

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Page 135: ...ps Ethernet LAN communications standard set by the IEEE in standard 802 3u also called ast Ethernet 100Mbps 100 million bits per second an expression of transmission speed in a network 10BASE T The original Ethernet LAN communications stan dard set by the IEEE in standard 802 3 a 10Mbps standard 10Mbps 10 million bits per second an expression of transmission speed in a network A Address A number s...

Page 136: ...nd the hub management software switching modules are most often referred to as bridges C Cascading The practice of connecting identical or similar LAN devices such as hubs together directly so that they function as one device A collection of cascaded devices is often called a stack Category 3 4 5 Communication cabling standards referring to the quality of the transmission medium and whether or not...

Page 137: ...ion when the data channel is in use D Duplex full half The transmission of data over a network in both directions Full Duplex FDX is simultaneous transmission of data over a network channel in both directions Half Duplex HDX is transmis sion in both directions but one at a time not simultaneous E Ethernet A particular type of LAN described in a standard 802 3 established by the IEEE with 10Mbps da...

Page 138: ...ntrast with ut of band J Jabber Malfunction of a network device wherein it con tinuously transmits random data L LAN Local Area Network an interconnected set of computers and other devices LED Light Emitting Diode an electronic device that lights up when electricity is passed through it LEDs are commonly used for status indicators on electronic devices M Mbps Megabits per second millions of bits p...

Page 139: ... is a type of repeater S Segment Part of an Ethernet or other network on which all traffic is common to all nodes See ollision Domain SNMP The Simple Network Management Protocol an industry standard protocol for remotely moni toring and controlling network devices from a Network Management System NMS SNMP re quests are usually transmitted using TCP IP though other means are possible T TCP IP Trans...

Page 140: ...rk devices send to network management stations to inform them that some problem has been detected Twisted pair Wire such as is commonly used with telephones consisting of pairs of copper wire usually termi nating in an RJ 45 or RJ 11 connector U UTP STP UTP unshielded twisted pair twisted pair wire without interference shielding STP shielded twisted pair twisted pair wire with shielding INDEX 1 10...

Page 141: ...7 D diagnostic port 20 24 25 35 45 54 115 DIP switch 33 34 disable 3 D View 7 19 25 35 39 45 49 E EIA 11 12 113 errors 18 64 65 F Fast Ethernet xi xii 1 2 3 4 16 18 23 26 28 32 33 121 125 128 FCC vi 123 Fiber Optic 32 front panel xii 3 12 15 H hub ID 3 Hub Stack 57 62 I IEEE 802 3 1 2 121 IN v vi 10 21 installation 7 12 30 B 2 IP address 25 37 38 45 46 49 52 56 L LED xii 3 9 15 18 32 33 34 122 128...

Page 142: ...42 43 44 53 55 port state 18 power 3 4 7 11 13 14 16 22 122 Primary Master 39 PROM 38 R Rear Panel 10 Receive 18 RJ 45 3 113 114 130 S security 41 42 51 53 69 120 slave 17 SLIP 45 47 48 SNMP 3 19 25 35 45 50 51 52 53 72 117 118 119 129 130 specifications xii xiii 2 stack 1 2 3 5 7 9 10 11 12 17 19 21 22 31 122 126 STP 23 26 121 130 B 2 straight through 9 26 subnet mask 37 46 77 Super User 43 44 54...

Page 143: ...TFTP 37 38 48 49 117 118 130 Topology 121 U Uplink 4 9 27 28 utilization 3 17 122 UTP 23 26 114 121 130 B 2 V VCCI vi 123 VT 100 24 25 38 115 ...

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Page 145: ...y TEL 49 6192 97110 FAX 49 6192 971111 WEB www dlink de BBS 49 6192 971199 INFO 0130 7250 00 toll free HELP 0130 7250 40 toll free INDIA D LINK INDIA PVT LTD Plot No 5 Kurla Bandra Complex Rd Off Cst Rd Santacruz E Bombay 400 098 India TEL 91 22 6172478 80 FAX 91 22 6172476 ITALY D LINK ITALY Via Nino Bonnet n 6 20154 Milano Italy TEL 39 2 2900 0676 FAX 39 2 2900 1723 JAPAN D LINK TOKYO 10F 8 8 15...

Page 146: ...o the following questions help us to support your product 1 Where and how will the product primarily be used Home Office Travel Company Business Home Business Personal Use 2 How many employees work at installation site 1 employee 2 9 10 49 50 99 100 499 500 999 1000 or more 3 What network protocol s does your organization use XNS IPX TCP IP DECnet Other_____________________________ 4 What network ...

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