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Part Number: DGS-1224T-S23
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D-link DGS-1224T, size: 1.6 MB
User reviews and opinions
|OldHawk||9:21pm on Tuesday, September 28th, 2010|
|A good low cost level 2, unmanaged switch. fast switch. fixed our network drop packet issues only 16 ports|
|Bruno Amaral||9:56pm on Thursday, June 10th, 2010|
|Not reliable for a work network. Within 1 month I started to receive glitches on one of the ports. It took a while to realize that it was the switch.|
|infostar||2:17am on Tuesday, June 8th, 2010|
|If you are using mini-GBIC modules for this switch, stick with D-Link DEM-310 or 311s. I tried a different brand and it did not work. Very nice switch. Had to change one of my computers to the same IP network as the switch and then change it to DHCP from there.|
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Table of Contents Table of Contents
D-Link Web Smart Switch User Manual
Table of Contents..... i About This Guide..... 1 Online Resources.... 1 Terms/Usage..... 1 Copy Right and Trademarks.... 1 Hardware Installation.... 2 Step1: Unpacking.... 2 Step2: Switch Installation.... 2 Desktop or Shelf Installation.... 2 Rack Installation..... 2 Step 3 Plugging in the AC Power Cord... 3 Power Failure..... 3 Getting Started..... 4 Management Options..... 4 Using Web-based Management Utility.... 4 Supported Web Browsers.... 4 Connecting to the Switch.... 4 Login Web-based Management Utility... 5 Smart Wizard..... 5 Web-based Management Utility.... 5 SmartConsole Utility..... 5 Product Introduction..... 7 DGS-1216T..... 7 Front Panel..... 7 Rear Panel..... 8 DGS-1224T..... 8 Front Panel..... 8 Rear Panel..... 9 DGS-1224TP..... 9 Front Panel..... 9 Rear Panel.... 10 DGS-1248T..... 10 Front Panel..... 10 Rear Panel.... 11 SmartConsole Utility..... 12 SmartConsole Settings..... 12 Utility Settings.... 12 Log..... 13 Trap...... 13 File..... 13 Help...... 14 Device Configurations..... 15 Add(+), Delete(-) and Discover the device.... 17 Device List..... 18 Configuration..... 19 Smart Wizard Configuration.... 19 Password Settings.... 19 i
Table of Contents
SNMP Settings..... 20 System Settings..... 21 Identifying the Web-based Management Utility... 22 Tool Menu..... 22 Reset..... 22 Configure Backup & Restore.... 23 Firmware Backup and Upload.... 23 System Reboot..... 24 Setup Menu..... 24 System > System Settings.... 24 System > Trap Settings.... 25 System > Port Settings..... 26 System > SNMP Settings.... 26 System > Password Access Control.... 28 Configuration > Jumbo Frame.... 28 Configuration > 802.1Q VLAN.... 28 Configuration >Asymmetric VLAN... 29 Configuration > 802.1Q Management VLAN.... 31 Configuration > Trunking.... 31 Configuration > IGMP Snooping.... 31 Configuration > 802.1D Spanning Tree.... 33 Configuration > Port Mirroring.... 34 Configuration > Power Saving.... 35 Power over Ethernet (PoE) > PoE Port Settings (Only for DGS-1224TP).. 35 Power over Ethernet (PoE) > PoE System Settings (Only for DGS-1224TP)... 36 QoS > 802.1p/DSCP Priority Settings.... 37 Security > Trusted Host.... 38 Security > Safeguard Engine.... 39 Security > Broadcast Storm Control.... 39 Security > 802.1X Settings.... 40 Security > Mac Address Table > Static Mac.... 41 Security > Mac Address Table > Dynamic Forwarding Table... 41 Monitoring > Statistics.... 42 Monitoring > Cable Diagnostics.... 42 Appendix A - Ethernet Technology.... 1 Gigabit Ethernet Technology.... 1 Fast Ethernet Technology.... 1 Switching Technology.... 1 Power over Ethernet (PoE).... 1 Appendix B - Technical Specifications.... 3 Hardware Specifications..... 3 Key Components / Performance.... 3 Port Functions..... 3 Physical & Environment..... 3 Emission (EMI) Certifications.... 3 Safety Certifications.... 3 Features..... 3 L2 Features.... 3 VLAN...... 3 ii
QoS (Quality of Service)..... 3 Security..... 3 Management..... 3
About This Guide About This Guide
This guide provides instructions to install D-Link Gigabit Ethernet Web Smart Switches DGS1216T/24T/24TP/48T, how to use the SmartConsole Utility, and to configure Web-based Management Utility step-by-step. Note: The model you have purchased may appear slightly different from the illustrations shown in the document. Refer Product Instruction and Technical Specification section for detailed information about your switch, its components, network connections, and technical specifications. This guide is mainly divided into four parts: 1. Hardware Installation: Step-by-step hardware installation procedures 2. Getting Started: A startup guide for basic switch installation and settings 3. Smart Console Utility: An introduction to the central management system 4. Configuration: Information about the function descriptions and configuration settings
Option 1: Follow these steps to install the SmartConsole Utility via the autorun program on the installation CD. 1. Insert the Utility CD into your CD-Rom Drive. 2. The autorun program will pop up automatically 3. Simply click on the Install SmartConsole Utility button and an installation wizard will guide you through the process. 4. After successfully installing the SmartConsole Utility, you can open the utility by clicking Start > Programs > D-Link SmartConsole Utility. 5. Just connect the Smart Switch to the same L2 network segment of your PC and use the SmartConsole Utility to discover the Smart Switches. Option 2: Follow these steps to install the SmartConsole Utility manually. 1. Insert the Utility CD into your CD-Rom Drive. 2. From the Start menu on the Windows desktop, choose Run. 3. In the Run dialog box, type D:\D-Link SmartConsole Utility\setup.exe (where D:\ represents the drive letter of your CD-Rom) and click OK. 4. Follow the on-screen instructions to install the utility. 5. Upon completion, go to Start > Programs > D-Link SmartConsole Utility and open the SmartConsole Utility. 6. Just connect the Smart Switch to the same L2 network segment of your PC and use the SmartConsole Utility to discover the Smart Switches. For a detailed look at SmartConsoles functions, please refer to Chapter 4 SmartConsole Utility
3 Product Introduction
Thank you and congratulations on your purchase of D-Link Web Smart Switch Products. D-Link's next generation Web Smart Gigabit switch series blends plug-and-play simplicity with exceptional performance and reliability for small and medium-sized business (SMB) networking. All models are housed in a new style rack-mount metal case with easy-to-view front panel diagnostic LEDs, and provide advance features including up to two or four combo SFP fiber connections, network security, traffic segmentation, QoS and versatile management. Some of the advanced features include: A Switch for Each Business Size: With three models (16, 24 and 48) Gigabit ports to choose from, this series provides flexible choices for different network size requirements. Since Gigabit copper ports capable of connecting to your existing Cat.5 twisted-pair cable, these switches eliminate the need of a complex reconfiguration process. In addition supports auto-detection of MDI/MDIX, bringing inexpensive and easy Gigabit connection to the desktops. Each switch provides two or four combo SFP slots for flexible connection to a fiber backbone or servers. All the SFP slots support 100M and 1000M dual speed fiber connections. Extensive Layer 2 Features: Implemented as complete L2 devices, these switches include functions such as Jumbo frame support, IGMP snooping, port mirroring, Spanning Tree, port trunks. The IEEE 802.3x flow control function allows your servers to directly connect to the switch for fast, reliable data transfer. Traffic Segmentation and QoS: The switches support 802.1Q VLAN standard tagging by prioritizing traffic to enhance network security and performance. Also support 802.1p priority queues, enabling users to run bandwidth-sensitive applications such as streaming multimedia and VoIP in network. These functions allow switches to work seamlessly with VLAN and 802.1p traffic in network. Asymmetric VLAN is implemented in these switches for a more efficient use of shared resources such as server or gateway devices. Network Security: D-Links innovative Safeguard Engine function protects the switches against traffic flooding caused by virus attacks. Additional features like MAC address filters screen access to the network. They support 802.1X port-based authentication, allowing network to be configured with external RADIUS servers. Versatile Management: The new generation of Gigabit web smart switches provides growing businesses simple and easy management of their network using an intuitive SmartConsole utility or a Web-Based management interface that allows administrators to remotely control their network down to the port level. The SmartConsole easily allows customers to discover multiple D-Link web smart switches with the same L2 network segment connected to users local PC. With this utility, users do not need to change the IP address of PC and also provides easy initial setting of smart switches. The switches with the same L2 network segment connected to users local PC are displayed on the screen for instant access. It allows extensive switch configuration setting, and basic configuration of discovered devices such as password change, firmware upgrade. In addition, users can also use the built-in MIB browser to poll the switches for information about their status and send traps of abnormal events. MIB support allows users to integrate the switches with third-party devices for management in an SNMP environment.
Figure 11 DGS-1224T Rear Panel
24 Port 10/100/1000BaseT PoE with 4 Combo SFP Smart Switch Front Panel
Figure 12 DGS-1224TP Front Panel
Power LED: The Power LED flashes when the Switch is connected to a power source. Power Max LED: The Power Max lights up when the system power resource remain 15.4W, in the meantime, system will not provide power to the additional PoE PD inserted. CPU LED: When the CPU LED is blinking, then the switch is in the normal condition. If the CPU LED is off or stays in solid light state that means the system might have crashed or firmware upgrade has failed. Fan Error LED: The FAN LED shows the status of the fans, light off indicates all fans work fine and the red light indicates that one or multiple fans are working abnormally. Mode Button: To select the mode of port LED, the Link/Act and PoE LED under the mode button will solid green to indicate which mode is selected. Port LED (1-20, 21T~24T): The port LED will indicate Link/Act or PoE status of this port depending on the LED mode you selected: Mode Link/Act Color Off Solid Green Blinking Green Solid Orange Blinking Orange PoE Off Solid Green Solid Orange Status The corresponding port is link down The corresponding port is link up at 1000Mbps Data is sending or receiving on corresponding port at 1000Mbps The corresponding port is link up at 10Mbps or 100Mbps Data is sending or receiving on corresponding port at 10Mbps or 100Mbps No power feeding or no PD found on corresponding port The corresponding port is providing standard 48V power to the PD PoE error has occurred at this port. You may check the detailed information for the errors on the PoE Port Setting page in Web-based Management Utility.
Port LED (21F~24F): The port LED will indicate Link/Act of this port: Mode Link/Act Color Off Solid Green Status The corresponding port is link down The corresponding port is link up at 1000Mbps
Blinking Green Solid Orange Blinking Orange
Data is sending or receiving on corresponding port at 1000Mbps The corresponding port is link up at 100Mbps Data is sending or receiving on corresponding port at 100Mbps
Figure 17 SmartConsole Utility Settings
NOTE: If the Group Interval is set to 0, IGMP snooping must be disabled or the Web-Smart Switch will not be discovered.
Log By clicking on this icon the Log window will pop up. Click View Log to show the events of the SmartConsole Utility and the device. Date/Time indicates when the log was received, IP indicates where it comes from and Status shows the content of this log message. Click Clear Log to clear all log entries. Click OK to exit.
Figure 18 SmartConsole Log
Trap By clicking on this icon the Trap window will pop up. Click View Trap to show the events of the SmartConsole Utility and the device. Date/Time indicates when the trap was received, IP indicates where it comes from and Status shows the content of this trap message. Click Clear Trap to clear all entries. Click OK to exit.
Figure 19 SmartConsole Trap
The trap icon in the SmartConsole Settings will change while receiving new trap messages please see below for detail description Icon Description No new traps New traps was received
File By clicking on this icon you will see below options:
Figure 20 SmartConsole File
Monitor Save: To record the setting of the Device List as default for the next time the SmartConsole Utility is used. Monitor Save As: To record the setting of the Device List in an appointed filename and file path. Monitor Load: To manually load a Device List setting file. Help By clicking on this icon a window with information about the SmartConsole will pop up.
Figure 21 SmartConsole Help
The Device Configurations in the SmartConsole Utility has five icons: Device Settings Device Password Manager Firmware Upgrade DHCP Refresh Web Access and the , , device buttons for the Device List.
Device Settings Select a switch from the Device List, then clicking on this icon the Device Settings window will pop up. Here you can configure the Product Name, IP Address, Gateway, Subnet Mask, System Name, Location, Trap IP, Switch Group Interval, and DHCP Setting of the Switch. To apply the configuration, insert the correct device password in Confirm Password then click OK
Figure 22 SmartConsole Device Settings
Device Password Manager Select a switch from the Device List, then clicking on this icon the Device Password Manager window will pop up. Here you can enter a new password and confirm.
Figure 23 SmartConsole Device Password Manager
Firmware Upgrade Select a switch from the Device List, then clicking on this icon the Firmware Upgrade window will pop up. Choose a Firmware Path (or you can Browse for one) that youre going to use then input the correct password of device and click Upgrade and wait the upgrade successfully message pop up to complete the firmware upgrade
Figure 24 Firmware Upgrade
CAUTION: Do not disconnect the PC or remove the power cord from device until upgrade complete. Switch may crash if firmware upgrade incompletely. DHCP Refresh: If the DHCP enabled switch in Device List shows the default IP, which means the device doesnt get IP from DHCP server successfully. Select this switch and click the DHCP refresh icon, the DHCP refresh will popup. Entering the correct Device Password then press OK, the device will renew the IP address from DHCP server.
Figure 25 SmartConsole Firmware Upgrade
Web Access Select a switch from the Device List, then clicking this icon an internet browser will pop up (default is Internet Explorer). Here you can configure the Switch through the Web-based Management Utility. You may also get into the Web-based Management Utility by double clicking the device in the device list. Add(+), Delete(-) and Discover the device By pressing the Discovery button, all the Web-Smart devices locate in the same domain with the management PC are listed in the Device List. Click the + and insert the device IP address to add a device into Discover List, or select a device and click the button to remove it.
Figure 26 SmartConsole Add device
Figure 27 SmartConsole Delete device
This is the list where all Web-Smart devices on the network are discovered.
Figure 28 SmartConsole Device List
Definitions of the Device List features: Monitor: Check the Monitor box, and the SmartConsole will collect the trap and log data from the device. The in the monitor means the device was discovered by SmartConsole, by single click the icon it will , which means this device will keep updating the information such as system log or trap to the become
SmartConsole Utility. When the device was detected not reachable, the icon will change to. Please check if the power or the cable of this device is disconnected. IP Address: Shows the current IP addresses of devices. MAC Address: Shows the device MAC Address. Protocol version: Shows the version of the Utility protocol. Product Name: Shows the device product name. System Name: Shows the appointed device system name. DHCP: Specify if the IP address of this device is from DHCP server or manual configured Location: Shows where the appointed device location. Trap IP: Shows the IP where the Trap information will be sent. Subnet Mask: Shows the Subnet Mask setting of the device. Gateway: Shows the Gateway setting of the device. Device Group Interval: Shows the intervals (in seconds) that the Switch will be discovered in the SmartConsole Device List Firmware version: Show the current Firmware version of this device.
Through a Web-based Management Utility, the features and functions of the D-Link Web Smarty Switch can be configured for optimum use.
Smart Wizard Configuration
Before entering the Web-based Management Utility, When The Smart Wizard will guide you to quick configure some functions. If you dont plan to change anything, click Exit to exit the Wizard and enter the Web Interface. Password Settings Password setting allows you to change the login password of the device. Type the desired new password in the Switch Password box and again in the Confirm Switch Password then click the Apply button to change the password.
Figure 29 Configure Password in Smart Wizard
SNMP Settings The SNMP Setting allows you to quick enable/ disable the SNMP function and configure the SNMP community name. For detail SNMP function description please see Setup Menu > System > SNMP Settings. The default SNMP Setting is Disabled. Click Enabled the Apply to configure Community Settings. Public: Read-only privilege allows authorized management stations to retrieve MIB objects. Private: Read/write privilege allows authorized management stations to retrieve and modify MIB objects.
Figure 30 Configure SNMP in Smart Wizard
System Settings By selecting Static and clicking Apply you can manually change the system IP Address, Subnet Mask, and Gateway address. You can further configure and read more about the above settings in the Setup Menu > System > System Settings. The default setting of System IP address is DHCP.
Figure 31 Configure System IP address in Smart Wizard
NOTE: Changing the system IP address will disconnect you from your internet connection, please enter the correct IP address in the Web browser and make sure your PC is in the same subnet with the switch. See Login Web-based Management Utility for detail description. If you want to change the IP settings, click YES and start a new web browser.
System Reboot Provide a safe way to reboot the system. Click System Reboot to restart the switch.
Figure 38 Tool Menu > System Reboot
All configuration options on the switch are accessed through the Setup menu on the left side of the screen. Click on the setup item that you want to configure. The following sections describe in more detail each of the features and functions.
Figure 39 Setup Menu
System > System Settings The System Setting allows the user to configure the IP address and the basic system information of the Switch. IP Information: There are two ways for the switch to attain IP: Static and DHCP (Dynamic Host Configuration Protocol). When using static mode, the IP Address, Subnet Mask and Gateway can be manually configured. When using DHCP mode, the Switch will first look for a DHCP server to provide it with an IP address, network mask, and default gateway before using the default or previously entered settings. By default the IP setting is static mode. System Information: By entering a System Name and System Location, the device can more easily be recognized through the SmartConsole Utility and in other Web-Smart devices on the LAN. Login Timeout: The Login Timeout controls the idle time-out for security purposes, when there is no action in the Web-based Management Utility. When the Login Timeout expires, the Web-based Management Utility requires a re-login before using the Utility again. Group Interval: The D-Link Web Smart Switch will routinely send report packets to the SmartConsole Utility in order to maintain the correct data shown. The user can configure the Group Interval to control the time routine. Zero means disabling Group Interval, and 120~1225 means sending the message according to the value chosen, the unit is in seconds.
Figure 40 System > System Setting
System > Trap Settings By configuring the Trap Setting, it allows SmartConsole Utility to monitor specified events on this Web-Smart Switch. By default, Trap Setting is disabled. When the Trap Setting is enabled, enter the Destination IP address of the managing station that will receive trap information.
Figure 41 System > Trap Setting
You can choose which event to send to the managing station System Event: Monitors the systems trapping information. Device Bootup: Traps system boot-up information. Illegal Login: Traps events of incorrect password logins, recording the IP of the originating PC. Fiber Port Link Up/Link Down: Traps fiber connection information. Twisted pair Port Link Up/Link Down: Traps copper connection information.
System > Port Settings In the Port Setting page, the status of all ports can be monitored and adjusted for optimum configuration. By selecting a range of ports (From Port and To Port), the Speed can be set for all such ports, by clicking Apply. To refresh the information table to view the latest Link Status and Priority, press the Refresh button.
Figure 42 System > Port Setting
Speed: Gigabit Fiber connections can operate in Auto Mode or Disable. Copper connections can operate in Forced Mode settings (100M Full, 100M Half, 10M Full, 10M Half), Auto, or Disable. 100M Fiber connections support 100M Full Force Mode, Auto or Disable. The default setting for all ports is Auto. NOTE: Be sure to adjust port speed settings appropriately after changing connected cable media types. Link Status: Reporting Down indicates the port is disconnected. Priority: Displays each ports 802.1p QoS priority level for received data packet handling. Default setting for all ports is Middle. You can change the priority settings in Qos > 802.1p Default Priority NOTE: When the Combo Fiber port and the Copper ports are both connected, the Fiber port will take precedence over the Copper ports, meaning the Fiber port will be the only connection. System > SNMP Settings Simple Network Management Protocol (SNMP) is an OSI Layer 7 (Application Layer) designed specifically for managing and monitoring network devices. SNMP enables network management stations to read and modify the settings of gateways, routers, switches, and other network devices. Use SNMP to configure system features for proper operation, monitor performance and detect potential problems in the Switch or LAN. Managed devices that support SNMP include software (referred to as an agent), which runs locally on the device. A defined set of variables (managed objects) is maintained by the SNMP agent and used to manage the device. These objects are defined in a Management Information Base (MIB), which provides a standard presentation of the information controlled by the on-board SNMP agent. SNMP defines both the format of the MIB specifications and the protocol used to access this information over the network. The default SNMP setting is disabled. Click enable, then Apply, to set Community Settings. 26
Figure 43 System > SNMP Setting
Community Setting: In support of SNMP version 1, the Web-Smart Switch accomplishes user authentication by using Community Settings that function as passwords. The remote user SNMP application and the Switch SNMP must use the same community string. SNMP packets from a station that are not authenticated are ignored (dropped). The default community strings for the Switch used for SNMP v.1 management access are: Public: The community with read-only privilege allows authorized management stations to retrieve MIB objects. Private: The community with read/write privilege allows authorized management stations to retrieve and modify MIB objects. Trap Setting: Traps are messages that alert network personnel of events that occur on the Switch. Such events can be as serious as a reboot (someone accidentally turned the Switch OFF), or less serious events such as a port status change. The Switch can generate traps and send them to the trap recipient (i.e. network administrator). Setting up a Trap: Select Enable, enter a Trap Name, add the IP of the device to be monitored, and choose the event(s) to trap. The available trap Events to choose from including: System Device Bootup Fiber Link Up / Link Down Fiber Abnormal Receive Error Fiber Abnormal Transmit Error Twisted Pair Link Up / Link Down Twisted Pair Abnormal Receive Error Twisted Pair Abnormal Transmit Error Note: Trap Name must be selected from a Community Name
System > Password Access Control Setting a password is a critical tool for managers to secure the Web-Smart Switch. After entering the old password and the new password two times, press Apply for the changes to take effect.
Figure 44 System > Password Access Control
Configuration > Jumbo Frame D-Link Gigabit Web Smart Switches support jumbo frames (frames larger than the Ethernet frame size of 1536 bytes) of up to 10240 bytes (tagged) can be transmitted by the Switch. Default is disabled, Select Enabled then click Apply to turn on the jumbo frame support.
Figure 45 Configuration > Jumbo Frame
Configuration > 802.1Q VLAN A VLAN is a group of ports that can be anywhere in the network, but communicate as though they were in the same area. VLANs can be easily organized to reflect department groups (such as R&D, Marketing), usage groups (such as e-mail), or multicast groups (multimedia applications such as video conferencing), and therefore help to simplify network management by allowing users to move devices to a new VLAN without having to change any physical connections. The IEEE 802.1Q VLAN Configuration page provides powerful VID management functions. The original settings have the VID as 01, named default, and all ports as Untagged Rename: Click to rename the VLAN group. Delete VID: Click to delete the VLAN group. Add New VID: Click to create a new VID group, assigning ports from 01 to 28 as Untag, Tag, or Not Member. A port can be untagged in only one VID. To save the VID group, press Apply. You may change the name accordingly to the desired groups, such as the aforementioned R&D, Marketing, email, etc.
Figure 46 Configuration > 802.1Q VLAN > Default Setting
Figure 47 Configuration > 802.1Q VLAN > Add VID
Figure 48 Configuration > 802.1Q VLAN > Example VIDs
Figure 49 Configuration > 802.1Q VLAN > VID Assignments
Configuration >Asymmetric VLAN This function is located in the 802.1Q Configuration page; it allows devices in different VLANs to communicate with the servers, firewalls or other shared resources in the shared VLAN. This configuration is accomplished in three steps: Enabling Asymmetric VLAN function Creating shared VLAN and access VLAN Configuring the PVID of access VLAN The example below is a typical application of Asymmetric VLAN. Servers and firewall are located in shared VLAN (default VLAN), and the PC 1, 2 and 3 are located in different VLAN because of security issue but both of them have to access the servers.
Configuration > Trunking The Trunking function enables the cascading of two or more ports for a combined larger bandwidth. Up to six Trunk groups may be created, each supporting up to 8 ports. Add a Trunking Name and select the ports to be trunked together, and click Apply to activate the selected Trunking groups.
Figure 55 Configuration > Trunking
NOTE: Each combined trunk port must be connected to devices within the same VLAN group. Configuration > IGMP Snooping With Internet Group Management Protocol (IGMP) snooping, the Web-Smart Switch can make intelligent multicast forwarding decisions by examining the contents of each frames Layer 2 MAC header. IGMP snooping can help reduce cluttered traffic on the LAN. With IGMP snooping enabled globally, the Web-Smart Switch will forward multicast traffic only to connections that have group members attached. Please note that IGMP will not alter or route IP multicast packets. To send IP multicast packets across subnetworks a multicast routing protocol will be necessary.
Figure 56 Configuration > IGMP Snooping Configuration
By default, IGMP is disabled. If enabled, the IGMP Global Settings will need to be entered: Querier State: D-Link Smart Switch is able to send out the IGMP Queries to check the status of multicast clients. Default is disabled. Query Interval (60-600 sec): The Query Interval is the interval between General Queries sent. By adjusting the Query Interval, the number of IGMP messages can increase or decrease; larger values cause IGMP Queries to be sent less often. Default is 125 seconds. Max Response Time (10-25 sec): The Max Response Time specifies the maximum allowed time before sending a responding report. Adjusting this setting effects the "leave latency", or the time between the moment the last host leaves a group and when the IGMP protocol is notified that there are no more members. It also allows adjustments for controlling the frequency of IGMP traffic on a subnet. Default is 10 seconds. Robustness Variable (2-255 sec): The Robustness Variable allows adjustment for the expected packet loss on a subnet. If a subnet is expected to be lossy, the Robustness Variable may be increased. The Robustness Variable can not be set zero, and SHOULD NOT be one. Default is 2 seconds. Last Member Query Interval (1-25 sec): The Last Member Query Interval is the Max Response Time inserted into Group-Specific Queries sent in response to Leave Group messages, and is also the amount of time between Group-Specific Query messages. This value may be adjusted to modify the "leave latency" of the network. A reduced value results in reduced time to detect the loss of the last member of a group. Default is 1 second. Host Timeout (System assigned): This is the interval after which a learnt host port entry will be purged. For each host port learnt, a 'Port Purge Timer' runs for 'Host Port Purge Interval'. This timer will be restarted whenever a report message from host is received over that port. If no report messages are received for 'Host Port Purge Interval' time, the learnt host entry will be purged from the multicast group. After entering Max Response Time, Robustness Variable and Last Member Query Interval, system will auto assign the value of Host Timeout. Router Timeout (60-600 sec): This is the interval after which a learnt router port entry will be purged. For each router port learnt, a 'Router Port Purge Timer' runs for 'Router Port Purge Interval'. This timer will be restarted whenever a router control message is received over that port. If no router control messages are received for 'Router Port Purge Interval' time, the learnt router port entry will be purged. Default is 260 seconds. Leave Timer (0-25 sec): This is the interval after which a Leave message is forwarded on a port. When a leave message from a host for a group is received, a group-specific query is sent to the port on which the leave message is received. A timer is started with a time interval equal to Igs Leave Process Interval. If a report message is received before above timer expires, the Leave message is dropped. Otherwise the Leave message is either forwarded to the port. Default is 1 second. To enable IGMP snooping for a given VLAN, select enable and click on the Apply button. Then press the Edit button under Router Port Setting, and select the ports to be assigned for IGMP snooping for the VLAN, and press Apply for changes to take effect.
Figure 57 Configuration > IGMP Router port Settings
To view the Multicast Entry Table for a given VLAN, press the View button.
Figure 58 Configuration > IGMP Multicast Entry Table
Configuration > 802.1D Spanning Tree 802.1D Spanning Tree Protocol (STP) implementation is a backup link(s) between switches, bridges or routers designed to prevent network loops that could cause a broadcast storm. When physical links forming a loop provide redundancy, only a single path will be forwarding frames. If the link fails, STP activates a redundant link automatically.
Figure 59 Configuration > Spanning Tree
By default, Spanning Tree is disabled. If enabled, the Switch will listen for BPDU packets and its accompanying Hello packet. BPDU packets are sent even if a BPDU packet was not received. Therefore, each link between bridges is sensitive to the status of the link. Ultimately this difference results in faster
detection of failed links, and thus faster topology adjustment. A draw-back of 802.1D is this absence of immediate feedback from adjacent bridges. After enabling STP, setting the STP Global Setting includes the following options: Bridge Priority: This value between 0 and 65535 specifies the priority for forwarding packets: the lower the value, the higher the priority. The default is 32768. Bridge Max Age: This value may be set to ensure that old information does not endlessly circulate through redundant paths in the network, preventing the effective propagation of the new information. Set by the Root Bridge, this value will aid in determining that the Switch has spanning tree configuration values consistent with other devices on the bridged LAN. If the value ages out and a BPDU has still not been received from the Root Bridge, the Switch will start sending its own BPDU to all other switches for permission to become the Root Bridge. If it turns out that the Switch has the lowest Bridge Identifier, it will become the Root Bridge. A time interval may be chosen between 6 and 40 seconds. The default value is 20. Bridge Hello Time: The user may set the time interval between transmissions of configuration messages by the root device, thus stating that the Switch is still functioning. The default is 2 seconds. (Max Age has to have a value bigger than Hello Time) Bridge Forward Delay: This sets the maximum amount of time that the root device will wait before changing states. The default is 15 seconds. Root Bridge: Displays the MAC address of the Root Bridge. Root port: Displays the root port. Root Path Cost: Shows the root path cost. In addition to 802.1D global settings, the D-Link Web smart switch allows the user to configure 802.1D STP by ports. Select From Port / To Port to specify the ports you want to configure. Control: select STP to let a port partake in the STP calculations and send/receive BPDU (Bridge Protocol Data Unit) packets. When selecting STP, the corresponding port will be treat as a normal STP port which will process the procedure Listening>Learning>Forwarding to prevent the loop happen. By selecting Disable, all the STP activities will be shut down by ports. You may also appoint this port to be the STP Edge port to forward STP packet only, in order to speed up the overall STP calculations. Path Cost: This defines a metric that indicates the relative cost of forwarding packets to specified port list. The lower the number, the greater the probability the port will be chosen to forward packets. The default value is 19. Path Priority: Select a value between 0 and 255 to specify the priority for a specified port for forwarding packets: the lower the value, the higher the priority. The default is 128. Configuration > Port Mirroring Port Mirroring is a method of monitoring network traffic that forwards a copy of each incoming and/or outgoing packet from one port of the Switch to another port where the packet can be studied. This enables network managers to better monitor network performances.
Figure 60 Configuration > Port Mirroring
Selection options for the Source Ports are as follows: TX (transmit) mode: Duplicates the data transmitted from the source port and forwards it to the Target Port. Click all to include all ports into port mirroring. RX (receive) mode: Duplicates the data that gets sent to the source and forwards it to the Target Port. Click all to include all ports into port mirroring. Both (transmit and receive) mode: Duplicate both the data transmitted from and data sent to the source port, and forwards all the data to the assigned Target Port. Click all to include all ports into port mirroring. None: Turns off the mirroring of the port. Click all to remove all ports from mirroring. Configuration > Power Saving The Power Saving mode feature reduces power consumption automatically when the RJ-45 port is link down or the connected devices are turned off. By reducing power consumption, less heat is produced, resulting in extended product life and lower operating costs. By default, the Power Saving mode is enabled.
Figure 61 Configuration > Power Saving
Power over Ethernet (PoE) > PoE Port Settings (Only for DGS-1224TP) DGS-1224TP supports Power over Ethernet (PoE) as defined by the IEEE 802.3af specification. Ports 1-24 can supply 50VDC power to PDs (Powered Device) over Category 5 or Category 3 UTP Ethernet cables. DGS-1224TP follows the standard PSE (Power Supply Equipment) pinout Alternative A, whereby power is sent out over pins 1, 2, 3 and 6. DGS-1224TP works with all D-Link 802.3af capable devices. The Switch also works in PoE mode with all non-802.3af capable D-Link AP, IP Cam and IP phone equipment via the PoE splitter DWL-P50. IEEE 802.3af defined that the PSE provides power according to the following classification: Class 4 Usage Default Optional Optional Optional Reserved Max power used by PD 15.4W 4.0W 7.0W 15.4W 15.4W
The PoE port table will display the PoE status including, Port Enable, Power Limit, Power (W), Voltage (V), Current (mA), Classification, Port Status. You can select From Port / To Port to control the PoE functions of a port. DGS-1224TP will auto disable the ports if a port current is over 350mA while other ports remain active Note: The PoE Status information of Power current, Power Voltage, and Current is the power usage information of the connected PD; please "Refresh" to renew the information.
Figure 62 PoE > PoE Port Setting
PoE Enable: Select to enable or disable the PoE function by ports. Power Limit: This function allows you to manually set the port power current limitation to be given to the PD. To protect the DGS-1224TP and the connected devices, the power limit function will disable the PoE function of the port when the power is overloaded. Select from "Class 1", "Class 2", "Class 3" and "Auto" for the power limit. "Auto" will negotiate and follow the classification from the PD power current based on the 802.3af standard. PoE Port Status: The PoE port status in the right of the window shows the current status of corresponding PoE port; see below for the detail description of diagnostic messages Normal: There is no PD is detected on corresponding port. The end point device may not support the PD function or the PD function is turned off on this device. Power management cause fail: The power feeding is temporary shut down because of PD suddenly require more power which over the maximum power limitation defined on corresponding port. Please disconnect the PD and check if there is damage or short happen on the PD. Over current: The power feeding is temporary shut down because PD requires more than 350mA power. Please disconnect the PD and check if there is damage or short happen on the PD. Short circuit: The power feeding is temporary shut down because the circuit of the ethernet cable might short somewhere between switch and PD, you may use the cable diagnostic function to check the status of the cable and define the distance of short. Power ON: The PoE function work normally on corresponding port. Power over Ethernet (PoE) > PoE System Settings (Only for DGS-1224TP) This page will display the PoE status including System Budget Power, Support Total Power, Remainder Power, and The ratio of system power supply.
Figure 72 Monitoring > Statistics
Refresh: To renew the details collected and displayed. Clear Counter: To reset the details displayed. TxOK: Number of packets transmitted successfully. RxOK: Number of packets received successfully. TxError: Number of transmitted packets resulting in error. RxError: Number of received packets resulting in error. To view the statistics of individual ports, click one of the linked Port numbers for details.
Figure 73 Monitoring > Port Statistics
Monitoring > Cable Diagnostics The Cable Diagnostics is designed primarily for administrators and customer service representatives to view tests of the copper cables. It rapidly determines the type of cable errors occurred in the cable. Select a port and then click the Test Now button to view the diagnosis.
Figure 74 Monitoring > Cable Diagnostic
Test Result: The description of the cable diagnostic results. OK means the cable is fine Short in Cable means the lines of the RJ45 cable maybe in contact somewhere Open in Cable means the lines of RJ45 cable maybe broken or the other end of the cable is simply disconnected. Test Failed means some other errors occured during cable diagnostics. Please select the same port and test again. Cable Fault Distance (meters): Indicates the distance of the cable fault from the Switch port, if the cable is less than 2 meters, it will show No Cable. Cable Length (meter): If the test result shows the cable is OK, cable length indicates the total length of the cable. The cable lengths are categorized into four types: <50 meters, 50~80 meters, 80~100 meters and >100 meters. NOTE: Cable length detection is supported on Gigabit ports only.
NOTE: Please make sure the power saving function is disabled before using the cable diagnostics function.
Appendix A - Ethernet Technology Appendix A - Ethernet Technology
This chapter provides some background information about Ethernet/Fast Ethernet/Gigabit Ethernet switching technology.
Gigabit Ethernet Technology
Gigabit Ethernet is an extension of IEEE 802.3 Ethernet utilizing the same packet structure, format, and support for CSMA/CD protocol, full duplex, and management objects, but with a tenfold increase in theoretical throughput of over 100-Mbps Fast Ethernet and a hundredfold increase over 10-Mbps Ethernet. Since it is compatible with all 10-Mbps and 100-Mbps Ethernet environments, Gigabit Ethernet provides a straightforward upgrade without wasting existing investments in hardware, software, or trained personnel. The increased speed and extra bandwidth offered by Gigabit Ethernet is essential to help solving network bottlenecks that frequently develop as more advanced computer users and newer applications continue to demand greater network resources. Upgrading key components, such as backbone connections and servers to Gigabit Ethernet technology can greatly improve network response times as well as significantly speed up the traffic between subnets. Gigabit Ethernet enables fast optical fiber connections to support video conferencing, complex imaging, and similar data-intensive applications. Likewise, since data transfers occur 10 times faster than Fast Ethernet, servers outfitted with Gigabit Ethernet NICs 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 tomorrows rapidly improving switching and routing internetworking technologies. And with expected advances in the coming years in silicon technology and digital signal processing that will enable Gigabit Ethernet to eventually operate over unshielded twisted-pair (UTP) cabling, outfitting your network with a powerful 1000-Mbps-capable backbone/server connection which will create a flexible foundation for the next generation of network technology products.
Business and Enterprise Solutions
Layer 2 Switch
DGS-1224T Web-Smart 24-Port 10/100/1000BASE-T With 2 Combo SFP Expansion Slots
The DGS-1224T blends plug-&-play simplicity with exceptional performance and reliability, to create a cost-effective solution for bandwidth-starved workgroups and departments. With (24) 10/100/ 1000BASE-T ports & (2) combo SFP expansion slots, the DGS-1224T is designed to help provide a simple and economical migration path from 10BASE-T or 100BASE-TX to 1000BASE-T Gigabit. Key features of the DGS-1224TG include: High Performance Wire-Speed Architecture Operational Simplicity L2 features including QoS for bandwidth sensitive applications and link aggregation Remote Management via Web Browser and Auto Discovery Utility Investment Protection High Performance Wire-Speed ArchitectureThe DGS-1224T delivers superior performance with exceptional value. With a switching capacity of up to 48Gbps and full duplex wire-speed forwarding, the DGS-1224T is an ideal solution for the most demanding bandwidth intensive applications. With support for 8,000 MAC addresses, the DGS1224T can be used as a cost-effective Gigabit wiring closet solution or a high performance backbone aggregation device. Operational SimplicityThe DGS-1224T supports a wide array of plug-in-play features: 10/100/1000Mbps auto-negotiation Universal UTP cable recognition for auto straight-through or crossover cable detection Full/Half duplex support IEEE standards support Investment ProtectionThe DGS-1224T helps to protect customers existing and future network infrastructure investments by: Work with unmanaged Gigabit switches along with competitive price point and features Providing a plug-&-play migration for existing 10/100BASE-TX devices to 1000BASE-T Standards-based feature support to help insure multi-vendor compatibility Fiber Gigabit Media Support Via 2 Combo SFP Expansion Slots The D-Link DGS-1224T is a flexible, high performance, and value-oriented solution for a wide range of Gigabit applications.
High Performance Wire-Speed Architecture:
-48Gbps Switching Capacity -Non-Blocking Architecture -8,000 MAC Address Table -2 Hardware Priority Queue -Port-based QoS -Port-based VLAN -Link Aggregation -Port Mirroring -Port Setting (Speed, Availability, Flow Control) -Web-based Management -Auto Discovery Utility
-True Plug & Play -Auto-Negotiation -Clear, At A Glance Per Port LED Indicators -Auto MDI/MDI-X Detection
-Support for Industry Standards -10/100/1000Mbps Migration -Fiber Media Support Via SFPs
Web-Smart (24) Port 10/100/1000Mbps With (2) Combo SFP Expansion Slots High Performance 48Gbps Non-Blocking Switch Fabric
DGS-1224T MAC Address Table Size Switch Fabric Transmission Method Diagnostic LEDs Packet Buffer Memory Forwarding Rate Address Aging Timer Max Power Consumption (24) Ports 10/100/1000Mbps with (2) Combo SFP Expansion Slots* 8,000 48Gbps Forwarding Capacity Store-and-forward Per Unit: Power Per Port: Activity/Link & Speed On Chip 400KByte Buffer Memory Per Device 35.7 Mpps 300 sec 32 Watts (Max)
RJ-45 10BASE-T, 100BASE-TX & 1000BASE-T Universal UTP Cable Recognition for Straight-Through or Crossover Cables (MDI/MDI-X)
Network Protocol and Standards
IEEE 802.3 Ethernet, 802.3u Fast Ethernet, 802.3x Flow Control & 802.3ab Gigabit Ethernet, Port-based QoS, Port-based VLAN, Link Aggregation, Port Mirroring, Priority Queues and Port Setting on speed, flow control and on/off.
Electrical & Electrical Emissions Summary
Emissions Power Supply CE Mark, FCC Class A 100-240VAC, 50/60 Hz Internal Universal Power
Safety Agency Certifications and Environmental
Safety Temperature Storage Humidity CUL Operating: 0 - 55 C (32 - 124 F) -10 - 70 C (-10 - 158 F) Operating: 5% to 90% RH, Non-Condensing
Dimensions (W x D x H) Weight 440x210x44 mm (17.3x8.27x1.73inches) 19-inch rack-mount width, 1.0U height 2.832 kg (6.27 lb.)
Warranty and Support Information
Warranty Limited Lifetime Warranty for as long as the original customer/end user owns the product, or five years after product discontinuance, whichever occurs first (excluding power supplies and fans). Power supplies and fans carry a limited 3-Year warranty. Free Technical Support
Part Number DGS-1224T Description Web-Smart Layer 2 Switch with (24) 10/100/1000BASE-T Ports with (2) Combo SPF Expansion Slots* (Desktop Or Rackmountable-Includes Standard 19 Mounting Kit) 1000BASE-LX 3.3V GBIC Up to 550m (Multimode) Up to 10km (Singlemode) 1000BASE-SX 3.3V GBIC, Up to 220m/550m (Multimode) 1000BASE-SX+ 3.3V GBIC Up to 2km (Multimode)
DEM-310GT DEM-311GT DEM-312GT2
*Note: Use Of The Combo SFP Expansion Slot Disables The Use Of The Corresponding 10/100/1000Mbps Port (See Manual For Additional Details) D-Link Systems, Inc. 17595 Mt. Herrmann Street Fountain Valley CA 92708 www.dlink.com Copyright D-Link Systems, Inc. 2004. All rights reserved. D-Link is a registered trademark of D-Link Systems, Inc. Other trademarks or registered trademarks are the property of their respective manufacturers or owners. Visit www.dlink.com for more details.
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