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Gigabit Ethernet Switch User’s Guide

14

MIBs

The information stored in the Switch is known as the Management Information Base (MIB). The Switch uses
the standard MIB-II Management Information Base module. Consequently, MIB values inside the Switch can
be retrieved from any SNMP-based network manager. In addition to the standard MIB-II, the Switch also
supports its own proprietary enterprise MIB as an extended Management Information Base. These MIBs may
also be retrieved by specifying the MIB’s Object-Identity (OID) at the network manager. MIB values can be
either read-only or read-write.

Read-only MIBs variables can be either constants that are programmed into the Switch, or variables that
change while the Switch is in operation.  Examples of read-only constants are the number of ports and types
of ports.  Examples of read-only variables are the statistics counters such as the number of errors that have
occurred, or how many kilobytes of data have been received and forwarded through a port.

Read-write MIBs are variables usually related to user-customized configurations. Examples of these are the
Switch’s IP Address, Spanning Tree Algorithm parameters, and port status.

If you use a third-party vendors’ SNMP software to manage the Switch, a diskette listing the Switch’s
propriety enterprise MIBs can be obtained by request. If your software provides functions to browse or modify
MIBs, you can also get the MIB values and change them (if the MIBs’ attributes permit the write operation).
This process however can be quite involved, since you must know the MIB OIDs and retrieve them one by one.

Packet Forwarding

The Switch looks at the network configuration to forward packets. This reduces the traffic congestion on the
network, because packets, instead of being transmitted to all segments, are transmitted to the destination
only.  Example:  if Port 1 receives a packet destined for Port 2, the Switch transmits that packet through Port
2 only, and transmits nothing through Port 1.

 

Filtering Database  A Switch filters frames, i.e., does not relay frames received by a Switch port to

other ports on that Switch, in order to prevent the duplication of frames. Frames transmitted between a
pair of end stations can be confined to LANs that form a path between those end stations.

The functions that support the use and maintenance of filtering database information are:

1.

 

Permanent configuration of reserved addresses.

2.

 

Explicit configuration of static filtering information.

3.

 

Automatic learning of dynamic filtering information through observation of Switched Local Area
Network traffic.

4.

 

Aging out of filtering information that has been automatically learned.

5.

 

Calculation and configuration of Switched Local Area Network topology.

Aging Time

The Aging Time is a parameter that affects the auto-learn process of the Switch in terms of the network
configuration. Dynamic Entries, which make up the auto-learned-node address, are aged out of the address
table according to the Aging Time that you set.

The Aging Time can be from 1 to 99 minutes. A very long Aging Time can result with the out-of-date Dynamic
Entries that may cause incorrect packet filtering/forwarding decisions.

Summary of Contents for DGS-3208F

Page 1: ...DGS 3208F Gigabit Ethernet Switch User s Guide Second Edition October 2004 6DGS3208F 02 Printed In Taiwan RECYCLABLE ...

Page 2: ...4 CONNECTING THE SWITCH 10 PC TO SWITCH 10 SWITCH TO SWITCH OTHER DEVICES 10 5 SWITCH MANAGEMENT CONCEPTS 12 LOCAL CONSOLE MANAGEMENT 12 Console port RS 232 DCE 12 IP Addresses and SNMP Community Names 12 Traps 13 MIBs 14 Packet Forwarding 14 Aging Time 14 Spanning Tree Algorithm 15 STA Operation Levels 15 On the Bridge Level 15 On the Port Level 16 User Changeable Parameters 16 Illustration of ST...

Page 3: ... Filtering and Forwarding Table 40 Configure Static Forwarding Table 41 Configure MAC Address Filtering 42 Configure Static Multicast Forwarding 43 Configure IGMP Filtering 44 Configure 802 1Q IGMP 44 Configure Port based IGMP 46 Configure VLAN 47 Configure MAC based Broadcast Domains 47 Configure Port based VLANs 50 Configure 802 1Q VLAN 51 Configure GMRP 54 Configure Trunk 55 Update Firmware and...

Page 4: ...MP 802 1Q VLAN Setup 89 IGMP Port Based VLAN Setup 90 Configure VLAN 91 Mode Setup 91 Mac based 91 Port Based VLAN Setup 93 802 1Q VLAN Configuration 94 Port VID Setup 94 Ingress Filtering Check 94 802 1Q VLAN Setup 95 GVRP Configuration 96 GMRP Configuration 96 GMRP Configuration 97 Device GMRP Configuration 97 802 1Q VLAN Multicast FDB 97 Trunk 98 Port Trunking 99 Monitor 99 Traffic Statistics 1...

Page 5: ...Save Settings to TFTP Server 110 Save Switch History to TFTP Server 111 Clear Address Table 112 Help 112 8 TECHNICAL SPECIFICATIONS 113 9 INDEX 115 ...

Page 6: ... Chapter 2 Unpacking and Setup Helps you get started with the basic installation of the Switch Chapter 3 Identifying External Components Describes the front panel rear panel side panels and LED indicators of the Switch Chapter 4 Connecting the Switch Tells how you can connect the DGS 3208F to your Gigabit Ethernet network Chapter 5 Switch Management Concepts Talks about local console management vi...

Page 7: ......

Page 8: ...mes faster than Fast Ethernet servers outfitted with Gigabit Ethernet NIC s are able to perform 10 times the number of operations in the same amount of time In addition the phenomenal bandwidth delivered by Gigabit Ethernet is the most cost effective method to take advantage of today and tomorrow s rapidly improving switching and routing internetworking technologies And with expected advances in t...

Page 9: ...s Eight 1000BASE SX SC type fiber transceiver Gigabit Ethernet ports RS 232 DCE console port for diagnosing the Switch via a connection to a PC and console out of band management Performance features Store and forward switching scheme capability to support rate adaptation and protocol conversion Full duplex to allow two communicating stations to transmit and receive at the same time Data forwardin...

Page 10: ...ernative backup paths and prevention of indefinite network loops Fully configurable either in band or out of band control via SNMP based software Flash memory for software upgrade This can be done in band via BOOTP TFTP Out of band console can also initiate a download request Built in SNMP management Bridge MIB RFC 1493 RMON MIB RFC 1757 MIB II RFC 1213 VLAN MIB 802 1Q 802 1D MIB and D Link propri...

Page 11: ...for replacement Setup The setup of the Switch can be performed using the following steps The surface must support at least 5 kg The power outlet should be within 1 82 meters 6 feet of the device Visually inspect the power cord and see that it is secured fully to the AC power connector Make sure that there is proper heat dissipation from and adequate ventilation around the Switch Do not place heavy...

Page 12: ... front panel one on each side and secure them with the screws provided Figure 2 2A Attaching the mounting brackets to the Switch Then use the screws provided with the equipment rack to mount the Switch in the rack Figure 2 2B Installing the Switch in an equipment rack Power on The DGS 3208F Switch can be used with AC power sources 100 240 VAC 50 60 Hz The Switch s power supply will adjust to the l...

Page 13: ...ht while the Switch loads onboard software and should remain on as long as the switch has power The Console LED indicator will remain ON if there is a connection at the RS 232 port otherwise this LED indicator is OFF Power Failure As a precaution the Switch should be unplugged in case of power failure When power is resumed plug the Switch back in ...

Page 14: ...net ports of fixed 1000BASE SX multimode fiber interface for connections to workstations servers and networking devices through multimode optical fiber cabling An RS 232 DCE console port is for diagnosing the Switch via a connection to a PC and local console management Comprehensive LED indicators display the condition of the Switch and status of the network A description of these LED indicators f...

Page 15: ...ides of the Switch for proper ventilation Remember that without proper heat dissipation and air circulation system components might overheat which could lead to system failure LED Indicators The LED indicators of the Switch include Power Console Link ACT and Full The following shows the LED indicators for the Switch along with an explanation of each indicator Figure 3 4 The DGS 3208F Switch LED in...

Page 16: ...t when there is a secure connection or link to a device at any of the ports The LED indicators blink whenever there is reception or transmission i e Activity ACT of data occurring at a port Full These LED indicators are illuminated when a port is operating in full duplex mode ...

Page 17: ...ed to a PC or Workstation full duplex mode is required The LED indicators for PC connection are dependent on the LAN card capabilities If LED indicators are not illuminated after making a proper connection check the PC s LAN card the cable Switch conditions and connections The following is an LED indicator possibility for a PC to Switch connection The Link ACT LED indicator lights up upon hookup S...

Page 18: ...Gigabit Ethernet Switch User s Guide 11 Figure 4 2 DGS 3208F Switch to switch connection ...

Page 19: ...n set up monitor or change the configuration of the Switch The Spanning Tree Algorithm STA provides the capability for the Switch to operate properly with other Bridges in a SNMP network supporting the STA Using the STA the network will prevent network loop and automatically establish and activate a backup path in the event of a path failure Console port RS 232 DCE Out of band management requires ...

Page 20: ...nges Operation You can also specify which network managers may receive traps from the Switch by setting a list of IP Addresses of the authorized network managers The following are trap types a trap manager will receive Cold Start This trap signifies that the Switch has been powered up and initialized such that software settings are reconfigured and hardware systems are rebooted A cold start is dif...

Page 21: ...tion This process however can be quite involved since you must know the MIB OIDs and retrieve them one by one Packet Forwarding The Switch looks at the network configuration to forward packets This reduces the traffic congestion on the network because packets instead of being transmitted to all segments are transmitted to the destination only Example if Port 1 receives a packet destined for Port 2...

Page 22: ...topology STA Operation Levels STA operates on two levels the bridge level and the port level On the bridge level STA calculates the Bridge Identifier for each Switch then sets the Root Bridge and the Designated Bridges On the port level STA sets the Root Port and Designated Ports Details are as follows On the Bridge Level Root Bridge The switch with the lowest Bridge Identifier is the Root Bridge ...

Page 23: ...ge Note that the Hello Time cannot be longer than the Max Age Otherwise a configuration error will occur Bridge Max Age The Max Age can be from 6 to 40 seconds At the end of the Max Age if a BPDU has still not been received from the Root Bridge your Switch will start sending its own BPDU to all other Switches for permission to become the Root Bridge If it turns out that your Switch has the lowest ...

Page 24: ...oadcast it to Bridge 2 and the broadcast will end there STA setup can be somewhat complex Therefore you are advised to keep the default factory settings and STA will automatically assign root bridges ports and block loop connections However if you need to customize the STA parameters refer to Table 5 1 Figure 5 1 Before Applying the STA Rules Figure 5 2 After Applying the STA Rules ...

Page 25: ...rt level STA parameters Enable Disable Enable Disable Enable or disable this LAN segment Disable a port for security or problem isolation Port Priority lower the higher the priority Increases chance of become Root Port Table 5 1 User selective STA parameters Port Trunking Port trunking is used to combine a number of ports together to make a single high bandwidth data pipeline The participating par...

Page 26: ... and port based VLANs is that you can change the network topology without physically moving stations or changing cable connections Stations can be moved to another VLAN and thus communicate with its members and share its resources simply by changing the port VLAN settings from one VLAN the sales VLAN for example to another VLAN the marketing VLAN This allows VLANs to accommodate network moves chan...

Page 27: ...ed to be forwarded to another switch port or somewhere else on the network On the other hand a user can define a port as a member of multiple VLANs VIDs allowing the segment connected to it to receive packets from many VLANs on the network These two variables control a port s ability to transmit and receive VLAN traffic and the difference between them provides network segmentation while still allo...

Page 28: ...t terms are as follows Tagging The act of putting 802 1Q VLAN information into the header of a packet Ports with tagging enabled will put the VID number priority and other VLAN information into all packets that flow out it If a packet has previously been tagged the port will not alter the packet thus keeping the VLAN information intact Tagging is used to send packets from one 802 1Q compliant devi...

Page 29: ...In the above example step 4 is the key element Because the packet has 802 1Q VLAN data encoded in its header the ingress port can make VLAN based decisions about its delivery whether server 2 is attached to a port that is a member of VLAN 2 and thus should the packet be delivered the queuing priority to give to the packet etc It can also perform these functions for VLAN 1 packets as well and in fa...

Page 30: ...until the hop counts for all broadcast packets have expired whereupon the packets will be discarded and the network will return to normal In the worst case they will multiply eventually using up all the network bandwidth although network applications will usually crash long before this happens and cause a network meltdown Broadcast storms have long been a concern for network administrators with ro...

Page 31: ...500 broadcast packets per second are being detected on a specified port Once the rising threshold is surpassed for a duration of more than 5 seconds it will trigger the broadcast storm rising action configured by the user The default falling threshold is met if there are less than 250 broadcast packets per second It is triggered once the duration is at least 30 seconds The actions can easily be de...

Page 32: ...tware set to emulate a VT100 The console must be connected to the Diagnostics port This is an RS 232 port with a 9 socket D shell connector and DCE type wiring Make the connection as follows 1 Obtain suitable cabling for the connection You can use either a a null modem RS 232 cable or b an ordinary RS 232 cable and a null modem adapter One end of the cable or cable adapter combination must have a ...

Page 33: ... characters behind and in front of the cursor 3 The up and down arrow keys the left and right arrow keys the tab key and the backspace key can be used to move between selected items It is recommended that you use the tab key and backspace key for moving around the console 4 Items in UPPERCASE are commands Moving the selection to a command and pressing Enter will execute that command e g SAVE EXIT ...

Page 34: ... Switch Steps to Create Administrator or Normal User Access From the screen above move the cursor to User Accounts Management and press Enter The User Account Management menu appears 1 Choose Create Modify User Accounts from the User Account Management menu The Add Modify User Accounts menu appears 2 Enter the new username assign an initial password and then confirm the new password Determine whet...

Page 35: ...ator Normal User Privilege Configuration Yes Yes view only Network Monitoring Yes Yes view only Community Strings and Trap Stations Yes Yes view only Update Firmware and Configuration Files Yes No User Account Management Add Modify User Account Yes No View Delete User Account Yes No System Utilities Yes Yes Factory Reset Yes No Restart System Yes No Table 6 1 Administrator and Normal User Privileg...

Page 36: ...red user 1 Type in your Username and press Enter 2 Type in your Password and press Enter 3 The main menu screen will be displayed based on your Administrator or Normal User access level or privilege Add Modify User Account To add or change your user password 1 Choose User Accounts Management from the main menu The following User Account Management menu appears ...

Page 37: ...ew user type in the Old Password and press Enter 5 Type in the New Password you have chosen and press Enter Type in the same new password in the following field to verify that you have not mistyped it 6 Determine whether the new user should have Normal User or Administrator privileges 7 Choose the APPLY command to let the password change take effect This method can also be used by an Administrator...

Page 38: ... your user password Choose View Delete User Accounts from the User Account Management menu The following screen appears Figure 6 7 View Delete User Account screen To delete your user password 1 Toggle the Delete field of the user you wish to remove to Yes 2 Press APPLY to let the user deletion take effect Setting Up The Switch This section will help prepare the Switch user by describing the System...

Page 39: ...to it so that the network management system or Telnet client can find it on the network The IP Configuration screen allows you to change the settings for the two different interfaces used on the Switch the Ethernet interface used for in band communication and the SLIP interface used over the console port for out of band communication Choose Configure IP Address to access the first item on the Syst...

Page 40: ...ared by both the SLIP and Ethernet network interfaces Subnet Mask Bitmask that determines the extent of the subnet that the Switch is on Should be of the form xxx xxx xxx xxx where each xxx is a number represented in decimal between 0 and 255 If no subnetting is being done the value should be 255 0 0 0 for a Class A network 255 255 0 0 for a Class B network and 255 255 255 0 for a Class C network ...

Page 41: ... Switch using SNMP requests allowing the settings to be used for network management purposes Choose Configure Switch to access the second item on the System Configuration menu The following screen appears Figure 6 11 Switch Configuration screen The fields you can set are System Name Corresponds to the SNMP MIB II variable system sysName and is used to give a name to the Switch for administrative p...

Page 42: ...are blocking the packet will not be discarded rather it will be forwarded only to the ports that are not blocking Configure Ports The Port Configuration screen allows you to change the port state in the case when you would like to partition a port or for observation device repair or security reasons Great caution however must be observed when partitioning a port you should make sure that the parti...

Page 43: ...ement packets All other packets will be dropped Speed Duplex When this function is enabled if too many consecutive collisions occur on an individual port the port will be blocked off until a good packet is seen on the wire If a port is partitioned the Switch can only transmit data not receive it Flow Ctrl Enables or disables IEEE 802 3x flow control on the port Flow control allows the port to send...

Page 44: ... can be set to 1 to 1 488 000 packets per second the default is 250 the falling action can be set to Do Nothing this is the default Forward that is discontinue blocking of broadcast packets received on the port or Forward Trap discontinue blocking of broadcast packets received on the port and send a trap to the trap manager s Press CTRL S to let the changes take effect If you wish these changes to...

Page 45: ...el The parameters for this section have been fully explained in Chapter 5 s Switch Management Concepts See STA Operation Levels On the Bridge level and User Changeable Parameters It is recommended that you read these sections as well as the introductory section in the same chapter entitled Spanning Tree Algorithm before changing any of the parameters To change the Protocol Parameters 1 Choose Conf...

Page 46: ...work on any port before it is discarded Forward Delay sec Read only object indicates how fast any port on the bridge can change its spanning state when moving towards the forwarding state The value determines how long the port stays in each of the listening and learning states which precede the forwarding state Hold Time Sec Read only object displays the time interval during which no more than two...

Page 47: ...col from the System Configuration menu 2 Choose STP Port Control from the Configure Spanning Tree Protocol menu The following screen appears Figure 6 17 Spanning Tree Protocol Custom Settings screen 3 Change the Disabled setting of the STP Status field to Enabled 4 Set the path cost for the port between 1 and 65535 in the Cost field 5 Set the priority for the port between 0 and 255 in the Priority...

Page 48: ...look up procedure Choices are Level 0 Level 1 Level 2 Level 3 Level 4 Level 5 Level 6 and Level 7 The higher the level the more MAC addresses can be learned by the Switch However a side effect is that throughput will be degraded the higher the level you select This setting will take effect after your system reboots MAC Address Age out Time Enter the desired MAC address age out time in this field 1...

Page 49: ...pecified device through this port The bottom of the screen will display a corresponding destination address VLAN Enter the desired VLAN ID number In the lower part of the screen Destination MAC Address Destination Port VLAN and Status are all read only fields The status of the static forwarding table entry can be in use or not apply Not apply means that there is a static filter for the same MAC ad...

Page 50: ... to the Static Filtering Table screen choose Add or Remove in the Action field Then enter the MAC Address and VLAN ID number if applicable and press APPLY Configure Static Multicast Forwarding The Static Multicast Forwarding Table screen allows you to forward traffic over each port for one multicast group To access this screen select Configure Static Multicast Forwarding from the Configure Filteri...

Page 51: ...st or vice versa To access the IGMP Configuration screen select Configure IGMP Filtering from the System Configuration menu The following IGMP Configuration screen will appear Figure 6 22 IGMP Configuration screen The item in this screen is defined as follows IP Multicast Filtering IGMP Snooping This enables or disables the Switch to intelligently forward IGMP and Multicast packets instead of broa...

Page 52: ...gned to a VLAN and allow IGMP query and report packets to be present on the given VLAN Only 12 agents can exist on the switch at any one time Items in the above screen are described below Action Adds or removes an entry agent from the table VID The VLAN number that you wish to create an agent for Press APPLY to add the agent to the table Go back to the IEEE 802 1Q IGMP Configuration menu and choos...

Page 53: ...be sent and received Age out Timer If no IGMP query packet has arrived at the Switch before this timer has expired the Switch will become the IGMP host for this VLAN IGMP Status Activates or deactivates the agent on this VLAN Configure Port based IGMP If the Switch is in Port based mode the IGMP Configuration screen will offer a VLAN Settings section in the lower part of the screen Select Configur...

Page 54: ... is described as follows Current VLAN Mode Displays what mode if any is currently enabled on the Switch Restart VLAN Mode Choose from four settings for this mode MAC based Broadcast Domains IEEE 802 1Q VLANs Port based or None After being restarted the Switch will implement the setting you have chosen Configure MAC based Broadcast Domains To create MAC based broadcast domains simply create the bro...

Page 55: ... set are Action Select the desired action by toggling between Add and Remove Domain Name Enter the name of the broadcast domain Press APPLY to add or remove the designated MAC based broadcast domain Broadcast Domains and Number of Members reflect the current status They are read only fields and cannot be changed Choose Add Remove MAC based Broadcast Domain Members from the MAC Based Broadcast Doma...

Page 56: ...can set are Action Select the desired action by toggling between Add and Remove MAC Address The MAC address of the broadcast domain member being added or removed Please note that the Status field for the MAC address you have entered may read Not Apply Once the Switch is restarted in MAC based broadcast domain mode the MAC addresses will be applied meaning that the broadcast domain is active Curren...

Page 57: ...s mode you must also reboot the Switch before being able to work with port based VLANs Figure 6 32 Configure VLAN Port Based menu The field you can set is Management Vid Enter a VLAN name for use with in band management Select Add a Port Based VLAN from the menu above to access the following screen Figure 6 33 Create a Port based VLAN screen To create a port based VLAN fill in the VLAN Name field ...

Page 58: ...ort based VLAN screen Toggle between Yes or No to assign a port to be a member of the selected VLAN Press APPLY to let the changes take effect Configure 802 1Q VLAN To configure an IEEE 802 1Q VLAN you must do three things 1 Decide if you want to enable Ingress Filtering and enable it on the chosen ports Ingress filtering applied on a port causes the port to examine all incoming packets and check ...

Page 59: ... whether they will Tag or Untag packets is done in the 802 1Q Static VLAN Settings screen Choose Configure 802 1Q VLAN on the VLAN Configuration screen System Configuration Configure VLAN to access the IEEE 802 1Q VLANs Configuration menu pictured below note that if you have just changed to this mode you must also reboot the Switch before being able to work with IEEE 802 1Q VLANs Figure 6 36 IEEE ...

Page 60: ...figure Port VLAN ID to access the second item on the IEEE 802 1Q VLAN Configuration menu The following screen appears Figure 6 38 Port VLAN assignment screen This screen allows you to set a default port VLAN ID number PVID for each port Press APPLY to let the changes take effect Note If a port is a member of a trunk group but is not the anchor the items shown in the above table will be read only a...

Page 61: ...guration screen This screen allows you to enable or disable GARP VLAN Registration Protocol GVRP where GARP is the Generic Attribute Registration Protocol on individual ports GVRP updates dynamic VLAN registration entries and communicates the new VLAN information across the network This allows among other things for stations to physically move to other switch ports and keep their same VLAN setting...

Page 62: ...ngs from the GMRP Configuration menu above The GMRP Configuration screen appears Figure 6 42 GMRP Configuration screen Use this screen to enable or disable GMRP on individual ports Press APPLY to let your changes take effect Configure Trunk Ports on the switch can be grouped together in a single logical port called a trunk This is discussed in detail in the Port Trunking section of the chapter of ...

Page 63: ...signal loops Description Enter the desired group name This can be any text string Port Member Select two or more ports for this field Use the arrow keys to move the cursor and the V and hyphen keys to select and deselect ports Press APPLY to make the changes take effect The new settings will appear in the table at the bottom of this screen Update Firmware and Configuration Files The Switch is capa...

Page 64: ... is set to Enabled the address will be obtained from the BOOTP server Firmware Update Determines whether or not the Switch will try to look for a runtime image file over the network If set to Disabled none of the fields below have any effect File Name The pathname of the runtime image file on your TFTP server to be downloaded Use Config File Toggle to Enabled to download config file during reboot ...

Page 65: ...test network connectivity between the Switch and any other network device with an IP address The fields you can set are Destination IP Address The IP address to be Pinged Repetition Amount of times the Switch should send the Ping 1 255 If zero is chosen the Switch will continue Pinging indefinitely In the lower part of the Ping Test screen you can view the Ping status including Result Reply Time o...

Page 66: ... configuration settings from the Switch to a TFTP server enter the server s IP address and a suitable file name then choose START The result will be reported in the lower part of the screen Save Switch History to TFTP Server The Save Switch History to TFTP Server function lets you command the Switch to send a record of operational events see Switch History under Network Monitoring further on in th...

Page 67: ... as a password to control access to the Switch If the Switch receives a request with a community name it does not recognize it will trigger an authentication trap The SNMP allows up to four different community names to be defined The community name public is defined by default you can change this name in addition to adding others You will need to coordinate these names with the community name sett...

Page 68: ...ch Network Monitoring The Network Monitoring menu offers six items Traffic Statistics Browse Address Table Browse IGMP Status Browse GVRP Status Browse GMRP Status and Switch History Choose Network Monitoring from the main menu The following menu appears Figure 6 50 Network Monitoring menu The first item on this menu permits you to access four different tables that observe the condition of each in...

Page 69: ...udes Polling Interval Select the desired update increment setting from 1 sec 5 sec 15 sec 30 sec 1 min or Suspend TX sec The number of good bytes sent from the respective port per second RX sec The number of good bytes received per second This also includes local and dropped packets Util This shows the percentage of available bandwidth each port is using over the amount of time specified by the up...

Page 70: ...ntage of available bandwidth each port is using over the amount of time specified by the update interval Bytes Recv The number of good bytes received This also includes local and dropped packets Bytes Sent The number of good bytes sent from the respective port Frames Recv The number of good frames received This also includes local and dropped packets Frames Sent The number of good frames sent from...

Page 71: ...ons Jabbers The number of frames with length more than 1518 bytes and with CRC error or misalignment bad framing Late Collision The number of collisions that occur at or after the 64th byte octet in the frame Mac Rx Errors The number of frames with received MAC Errors Dropped Frames Counts received packets which are dropped due to any of the following reasons lack of available receive buffers port...

Page 72: ...ts The number of good bytes received This also includes local and dropped packets Total RX The number of bytes received good and bad Unicast RX Unicast TX The number of good unicast frames received and sent This includes dropped unicast packets Multicast RX Multicast TX The number of good multicast frames received and sent This includes local and dropped multicast packets Broadcast RX Broadcast TX...

Page 73: ... browse by VLAN ID select VLAN in the Search By field enter the desired VLAN ID in the field offered and then press FIND A forwarding table containing Port MAC Address Learned status and VLAN ID is located on the lower part of the screen Browse IGMP Status The Browse IGMP Status function allows you to browse Internet Group Management Protocol IGMP The Switch is able to recognize IGMP queries and r...

Page 74: ...t by the switch Queries RX The number of IGMP requests that have arrived at a switch port Multicast Group The Multicast IP address of the Multicast group being displayed MAC Address The Multicast MAC address of the multicast group being displayed Reports The number of notifications sent from each station to the IGMP host signifying that the station is still or wants to be part of a multicast group...

Page 75: ...ation Protocol GMRP To display the GMRP Status screen choose Network Monitoring from the main menu and then choose Browse GMRP Status The following screen appears Figure 6 59 GMRP Status screen This screen contains information pertaining to the GMRP status of IEEE 802 1Q VLANs Switch History The Switch keeps a record of events that may be of interest to a network administrator startups reconfigura...

Page 76: ...ify See System Utilities earlier in this chapter Resetting the Switch You can use the console interface to reset the Switch either doing a Restart System which restarts the Switch and is identical to powering the Switch off and back on again or a Factory Reset to Default Value which sets all of the Switch s parameters to what they were when the Switch was delivered from the factory Restart System ...

Page 77: ...P parameters the enabled disabled settings of ports security settings etc will be erased and restored to their factory default settings 1 Choose Factory Reset from the main menu The following screen appears Figure 6 62 Factory Reset screen 2 Move the cursor to Yes to confirm the reset and press Enter The main menu screen should appear Logout To exit the Switch choose Logout from the main menu You ...

Page 78: ...tions for the browser The second and last step is to configure the IP interface of the Switch This can be done manually through a console see the Configure IP Address section in the Using The Console Interface chapter Management To begin managing your Switch simply run the browser you have installed on your computer and open the IP address you have defined for the device In the page that opens cli...

Page 79: ...the name of the person to contact should there be any problems or questions with the system in the System Contact field a name for the system in the System Name field and the physical location of the Switch in the System Location field Then click Apply The remaining information in the screen includes System Description Description of the Switch model System OID SNMP Object Identifier for the Switc...

Page 80: ...he subnet that the Switch is on Default Gateway The default router for the device Assign IP Determines whether the Switch should get its IP Address settings from the user Manual a BOOTP server or a DHCP server If Manual is chosen the Switch will use the IP Address Subnet Mask and Default Gateway settings defined in this screen upon being rebooted If BOOTP is chosen the Switch will send out a BOOTP...

Page 81: ... a packet with an unknown destination address needs to be forwarded to several ports and if some of them are blocking the packet will not be discarded rather it will be forwarded only to the ports that are not blocking Toggle between Disabled and Enabled before clicking Apply to let your change take effect Ports Setup Figure 7 4 Port Configuration window Select the port you want to configure by cl...

Page 82: ...re manually entered in the Static Forwarding Table 6 Specify settings for the broadcast storm controls The Rising Action and Rising Action Threshold controls specify what action if any the Switch should take when broadcast traffic received on the port increases to or exceeds the equivalent of a specified number of broadcast packets per second The threshold can be set to 1 to 1 488 000 packets per ...

Page 83: ...r or an RMON probe to view details about the packets passing through the first port To configure a mirror port select Enabled from the Status pull down list In the first field select the source port from where you want to copy frames In the second field select the port which receives the copies from the source port This is the port where you will connect a monitoring troubleshooting device such as...

Page 84: ...eceiving station Community A user defined community name SNMP Manager Figure 7 7 SNMP Manager window To use the functions on this window enter the desired community string for SNMP management on the Switch in the Community String field and the desired Access Right setting in the next field You may enter up to four IP addresses of trap receiving stations in the Trap Manager window of the Configurat...

Page 85: ...h the console port TFTP Server Address The IP address of the TFTP server where the new firmware code is Firmware Update Determines whether or not the Switch should download its new firmware code the next time it is booted File Name The path and the name of the file which holds the new firmware code on the TFTP server Use Config File Determines whether or not the Switch should download its configur...

Page 86: ...tings are Baud Rate 9600 Data Bits 8 Flow Control XON XOFF Parity None Stop Bits 1 The information is described as follows Console Timeout Choose Never 15 minutes 30 minutes 45 minutes or 60 minutes for the desired refresh setting Serial Port The options for the current console port setting are Console or Slip Baud Rate Determines the serial port bit rate that will be used the next time the Switch...

Page 87: ...lash memory click the Apply button on this window Reset Figure 7 11 Reset Functions window This window lets you restart the Switch or carry out a factory reset Restarting the Switch clears transient data but preserves saved settings a factory reset clears transient data and restores the settings that were in effect when the Switch left the factory ...

Page 88: ...of the Switch Management Concepts chapter for a detailed explanation To configure Spanning Tree Protocol functions for the Switch or individual ports enter the desired information in the fields on this screen see the descriptions below for assistance and then click Apply The information on the screen is described as follows Spanning Tree Protocol Select Enabled to implement the Spanning Tree Proto...

Page 89: ...ridge priority ranges from 0 to 65535 with 0 being the highest priority Bridge Max Age 6 40 Sec The Maximum Age is a read write object that can be from 6 to 40 seconds At the end of the Maximum Age if a BPDU has still not been received from the Root ridge your Switch will start sending its own BPDU to all other switches for permission to become the Root Bridge If it turns out that your Switch has ...

Page 90: ...splays the priority number of the port The value is used in conjunction with the physical port number to set the port ID which in turn is used when determining the root port of the bridge The smaller the number set the higher the port priority is The higher the port priority the more chances the port has of becoming the root port Port priority ranges from 0 to 255 with 0 being the highest port pri...

Page 91: ...from an unknown source address will be dropped by the Switch Address Table Lookup Mode This setting allows the user to tailor the MAC address look up procedure Choices are Level 0 Level 1 Level 2 Level 3 Level 4 Level 5 Level 6 and Level 7 The higher the level the more MAC addresses can be learned by the Switch However a side effect is that throughput will be degraded the higher the level you sele...

Page 92: ... of the device to which the specified port permanently forwards traffic in the destination MAC Address field enter a VLAN name if applicable and enter the port number that permanently forwards traffic from the specified device in the destination port number field Then click Apply to let your changes take effect The information in the screen is described as follows Destination MAC Address The MAC a...

Page 93: ...he MAC filtering function enter the MAC address of the device allowed to send traffic in the MAC Address field and select the desired setting in the Filter Status field Then click Apply The information in the window is described as follows MAC Address The Ethernet address of the MAC filtering table entry VLAN The VLAN ID number of the MAC filtering table entry Click the arrow icon to access the Ad...

Page 94: ...C address of the device allowed to send traffic in the MAC Address field enter the current VLAN name and then click Apply 802 1Q VLAN Multicast FDB Figure 7 19 Static Multicast Settings window This window allows you to forward traffic over each port for one multicast group Click the arrow icon to access the Configure Static Multicast Entry window ...

Page 95: ...ort to belong to a VLAN Check Egress to statically set a port to belong to a VLAN Checking Forbidden prevents the port from joining a VLAN dynamically as well as defining the port as a non member Now select a state Invalid Permanent Delete on Reset or Delete on Timeout Click Apply to activate the filter Configure IGMP Filtering IGMP Setup The IGMP Setup command lets you check and adjust Internet G...

Page 96: ...g also enables IGMP snooping which enables the Switch to read IGMP packets being forwarded through the Switch in order to obtain forwarding information from them learn which ports contain multicast members IGMP 802 1Q VLAN Setup Figure 7 22 second IGMP Configuration window This table displays IGMP configuration information Click the arrow icon to access the Add Delete IGMP Entry window Figure 7 23...

Page 97: ...ke effect IGMP Port Based VLAN Setup Figure 7 24 Port based IGMP Configuration window This table displays IGMP configuration information Click the arrow icon to access the Modify IGMP Entry window Figure 7 25 Modify IGMP Entry window Enter a VLAN ID name in the first field enter an IGMP entry aging time in the next field disable or enable IGMP status and click Apply to let your changes take effect...

Page 98: ...figuration and 802 1Q VLAN Multicast FDB are the main screens for 802 1Q VLANs Please note that if you are unsure about this material we highly recommend consulting Chapter 5 Switch Management Concepts Mode Setup Figure 7 26 Configure VLAN Mode window To use one of these three modes select MAC Based Broadcast Domains 802 1Q or Port based under Restart VLAN Mode otherwise leave the setting at Disab...

Page 99: ... table You can click the button under Remove to delete a domain Click the arrow under Enter to add entries to this table The following window appears Figure 7 28 Add a Mac Address window This window lets you designate particular machines on your network as members of the MAC based broadcast domain named in the title above To add a machine to the domain enter the machine s MAC address and click App...

Page 100: ...move it by clicking the button under Remove Port Based VLAN Setup Figure 7 29 Configure Port based VLAN window Select a management VLAN at the top of the window and then click Apply Click the pointer icon on the far right of the window above to access the Add Remove Port based VLAN window Figure 7 30 Add Remove Port based VLAN window ...

Page 101: ... to a port based VLAN select Modify to the table and then make the desired changes to the Group settings Click Apply to let your changes take effect 802 1Q VLAN Configuration Port VID Setup Figure 7 31 Port VID Setup VLAN window Use this window to assign a default VLAN ID for each desired port Click Apply to let the settings take effect Ingress Filtering Check Figure 7 32 Ingress Filtering Check w...

Page 102: ...ndow Click the pointer icon to access the Configure 802 1Q VLAN Entry window Figure 7 34 Configure 802 1Q VLAN Entry window To configure an 802 1Q VLAN entry enter a VLAN ID number and VLAN Name in the first two fields Next check Untag for each member port that is not a tagging port None should be checked if you don t want a port to belong to a VLAN Check Egress to statically set a port to belong ...

Page 103: ...ion Protocol GVRP where GARP is the Generic Attribute Registration Protocol for each desired port Click Apply to let the settings take effect GMRP Configuration Figure 7 36 GMRP Configuration window Use this window to disable or enable Group Multicast Registration Protocol GMRP on individual ports on the Switch Click Apply to let the change take effect ...

Page 104: ... Device GMRP window Use this window to enable or disable Group Multicast Registration Protocol GMRP on the Switch Click Apply to let your change take effect 802 1Q VLAN Multicast FDB Figure 7 38 Static Multicast Settings window This window allows you to forward traffic over each port for one multicast group ...

Page 105: ...ly set a port to belong to a VLAN Checking Forbidden prevents the port from joining a VLAN dynamically as well as defining the port as a non member Select the appropriate State Permanent Delete on Reset Delete on Timeout or Invalid Click Apply to activate the filter Trunk This is the fourth category of the Web based management program One item is featured in this section Port Trunking Port trunkin...

Page 106: ...status you want Enabled or Disabled and click Apply Please note that the maximum size for trunk groups is four ports Monitor This is the fifth category of the Web based management program The Monitor options include Traffic Statistics Overview Traffic Utilization Errors and Analysis Browse Address Table Search by MAC Search By Port Search By VLAN and Search By None IGMP Status Browse GVRP Status B...

Page 107: ...e desired setting 1 second 5 seconds 15 seconds 30 seconds 60 seconds or Suspend TX frames sec Counts the total number of frames transmitted from a selected port per second since the Switch was last rebooted RX frames sec Counts all valid frames received on the port per second since the Switch was last rebooted of Utilization This shows the percentage of available bandwidth each port is using over...

Page 108: ...ol off or 1000 Full Flow control on or not Link Down Utilization Current utilization for the port as a percentage of total available bandwidth Last Screen MAC The last MAC address learned by the Switch Traffic in Bytes Error Free Bytes Sent Counts the number of bytes successfully sent from the port Error Free Bytes Received Counts the total number of bytes octets included in valid readable frames ...

Page 109: ...unter to restart the graph on the window above The information is described as follows Last Detected Source Address MAC address of the last source accessed Errors Figure 7 44 Port Statistics Errors window Click Reset Counter to clear all the counters on the window above The information is described as follows ...

Page 110: ...octets with either bad framing or an invalid CRC Late Collision Counts collisions that occur at or after the 64th byte octet in the frame This may indicate that delays on your Ethernet are too long and you have either exceeded the repeater count or cable length specified in the Ethernet standard MAC Received Error Counts bit patterns with illegal encodings This may indicate noise on the line Dropp...

Page 111: ...3 The total number of packets including bad packets received that were between 512 and 1023 octets in length inclusive excluding framing bits but including FCS octets 1024 1518 The total number of packets including bad packets received that were between 1024 and 1518 octets in length inclusive excluding framing bits but including FCS octets RX good The number of good frames received This also incl...

Page 112: ... you to display a forwarding table containing Switch ports source addresses learned statuses and VLAN ID numbers If the table doesn t display the information you want fill in the requested information in the Start MAC Address and Current Vid 1 4094 fields and then click the Search button Search By Port Figure 7 47 Address Table window ...

Page 113: ... Port Number and Current Vid 1 4094 fields and then click the Search button Search By VLAN Figure 7 48 second Forwarding Table window The Switch allows you to display a forwarding table containing Switch ports source addresses learned statuses and VLAN ID numbers If the table doesn t display the information you want fill in the requested information in the Current Vid 1 4094 field and then click t...

Page 114: ... age out timer as well as the IGMP snooping status Enter the desired VLAN ID number in the Current Vid 1 4094 field and then click Change The fields displayed are defined as follows Current Vid 1 4094 Enter the desired VLAN ID number in this field and then click the Change button IGMP Snooping Indicates whether IGMP snooping is Enabled or Disabled Age out Timer Displays the time the Switch waits b...

Page 115: ... information pertaining to GARP Generic Attribute Registration Protocol VLAN Registration Protocol GVRP Click the Next button at the bottom of the window to view the status of additional IEEE 802 1Q VLANs Browse GMRP Status Figure 7 52 GMRP Status window This window contains information pertaining to the Group Multicast Registration Protocol GMRP status of IEEE 802 1Q VLANs ...

Page 116: ...d deactivations firmware upgrades and others Figure 7 53 Switch History window The Switch can be commanded to upload its history via TFTP to a machine you specify See the description of the Utilities group s Upload History command further on in this chapter User This is the sixth category of the Web based management program One item is featured in this section Add Modify User Account ...

Page 117: ...Apply To delete a User Account click the X icon in the delete column on the User Account Table at the bottom of the window Utilities This is the seventh category of the Web based management program The Utilities options include Save Settings to TFTP Server Save Switch History to TFTP Server and Clear Address Table See below for explanations of each one Save Settings to TFTP Server This function le...

Page 118: ...TFTP Server The Switch keeps a record of events that may be of interest to a network administrator startups reconfigurations link activations and deactivations firmware upgrades and others You can view this record by choosing History Log from the Monitor command group Figure 7 56 Save Switch History to TFTP Server window To have a record of recent operational events uploaded to a TFTP server on yo...

Page 119: ... Switch User s Guide 112 Clear Address Table Figure 7 57 Clear Address Table window Click Apply to clear all address tables Help Click this button to access the online help files for the Switch Figure 7 58 Help window ...

Page 120: ...Number of Ports Eight 1000BASE SX SC type Gigabit Ethernet ports Physical and Environmental AC inputs 100 240 VAC 50 60 Hz internal universal power supply Power Consumption 75 watts maximum DC fans Three built in 40 x 40 mm DC fans Operating Temperature 0 to 50 degrees Celsius Storage Temperature 25 to 55 degrees Celsius Humidity 5 to 95 RH non condensing Dimensions 441 mm x 367 mm x 44 mm 1U 19 i...

Page 121: ...formance Transmission Method Store and forward RAM Buffer 16 Mbytes per device 83 3 MHz Filtering Address Table 12K MAC addresses per device Packet Filtering Forwarding Rate 1 488 100 pps per port MAC Address Learning Auto learning and auto aging ...

Page 122: ... Bridge Max Age 39 Bridge Max Age 6 40 Sec 82 Bridge Max Age 16 Bridge MIB RFC 1493 3 Bridge Priority 15 Bridge Priority 16 18 Bridge Priority 0 65535 Sec 82 Bridge Priority 0 65535 Sec 40 Bridge Priority 0 65535 39 BridgeIdentifier 15 broadcast packets 37 Broadcast RX 66 broadcast storm 37 Broadcast Storm Falling Action 36 Broadcast Storm Rising Action 36 Broadcast TX 66 Browse GMRP Status 68 Bro...

Page 123: ...dicator 9 General User 110 Hardware Revision 72 head of line HOL blocking prevention 74 Head Of Line HOL Blocking Prevention 35 heat dissipation 4 Hello Time 18 Hello Time 1 10 sec 39 Hello Time 1 10 Sec 39 Help 112 Hold Time Sec 39 82 Humidity 113 Identifying External Components 7 IEEE 802 1Q VLANs 20 Illustration of STA 16 Ingress port 21 Introduction 1 3 IP address 33 IP Address 61 73 77 IP Add...

Page 124: ...only MIBs Definition of 14 Read write MIBs Definition of 14 Rear Panel 7 Received Bad Fragments 103 Repetition 59 Resetting the Switch 69 Rising Action 37 RMON MIB RFC 1757 3 RMON probe 38 76 Root Bridge 15 Root C 39 Root Cost 82 Root Path Cost 15 Root Port 16 39 82 Root Priority 39 Root Priority Sec 82 Routers 2 RS 232 DCE console port 12 Runtime Software Version 72 RX good 104 RX GOOD 66 RX fram...

Page 125: ...y vendors SNMP software 14 Threshold Falling Action 37 Threshold Rising Action 37 Time Since Topology Changes sec 39 81 Topology Change 13 Topology Change Count 39 81 Total Bytes Received 101 Total Bytes Recv 64 Total errors 65 Total Errors 103 Total Frames Received 101 Total Frames Recv 64 Total RX 66 104 Traffic Statistics 62 Transmission Methods 114 trap manager 37 Trap Manager 76 Traps 13 Trap...

Page 126: ...9 0 6192 9711 11 URL www dlink de BBS 49 0 6192 971199 Analog 49 0 6192 971198 ISDN INFO LINE 00800 7250 0000 toll free HELP LINE 00800 7250 4000 toll free REPAIR LINE 00800 7250 8000 E MAIL mbischoff dlink de mboerner dlink de INDIA D LINK INDIA Plot No 5 Kurla Bandra Complex Road Off Cst Road Santacruz E Bombay 400 098 India TEL 91 22 652 6696 FAX 91 22 652 8914 URL www dlink india com E MAIL se...

Page 127: ... tw U K D LINK EUROPE D Link House 6 Garland Road Stanmore London HA7 1DP U K TEL 44 20 8235 5555 FAX 44 20 8235 5500 BBS 44 20 8235 5511 URL www dlink co uk E MAIL info dlink co uk U S A D LINK U S A 17595 Mt Herrmann Fountain Valley CA 92708 USA TEL 1 714 885 6000 FAX 1 886 743 4905 INFO LINE 1 800 326 1688 URL www dlink com E MAIL tech dlink com support dlink com ...

Page 128: ...ollten Sie es vom Stromnetz trennen Somit wird im Falle einer Überspannung eine Beschädigung vermieden 13 Durch die Lüftungsöffnungen dürfen niemals Gegenstände oder Flüssigkeiten in das Gerät gelangen Dies könnte einen Brand bzw Elektrischen Schlag auslösen 14 Öffnen Sie niemals das Gerät Das Gerät darf aus Gründen der elektrischen Sicherheit nur von authorisiertem Servicepersonal geöffnet werden...

Page 129: ...IN THE PRODUCT DOES NOT EXIST OR WAS CAUSED BY THE CUSTOMER S OR ANY THIRD PERSON S MISUSE NEGLECT IMPROPER INSTALLATION OR TESTING UNAUTHORIZED ATTEMPTS TO REPAIR OR ANY OTHER CAUSE BEYOND THE RANGE OF THE INTENDED USE OR BY ACCIDENT FIRE LIGHTNING OR OTHER HAZARD LIMITATION OF LIABILITY IN NO EVENT WILL D LINK BE LIABLE FOR ANY DAMAGES INCLUDING LOSS OF DATA LOSS OF PROFITS COST OF COVER OR OTHE...

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Page 131: ... Link warrants that its software products will perform in substantial conformance with the applicable product documentation provided by D Link with such software product for a period of ninety 90 days from the date of purchase from D Link or its Authorized Reseller D Link warrants the magnetic media on which D Link provides its software product against failure during the same warranty period This ...

Page 132: ...terference received including interference that may cause undesired operation CE Mark Warning This is a Class A product In a domestic environment this product may cause radio interference in which case the user may be required to take adequate measures Warnung Dies ist ein Produkt der Klasse A Im Wohnbereich kann dieses Produkt Funkstoerungen verursachen In diesem Fall kann vom Benutzer verlangt w...

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