D-Link DGS-1248T User Manual
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D-Link DGS-1248T User Manual

48-port 10/100/1000 mbps with 4 combo mini gbic gigabit smart switch
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DGS-1248T
48-Port 10/100/1000 Mbps
with 4 Combo Mini GBIC
Gigabit Smart Switch
User Manual
V1.01

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  • Page 1 DGS-1248T 48-Port 10/100/1000 Mbps with 4 Combo Mini GBIC Gigabit Smart Switch User Manual V1.01...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS About This Guide... 1 Purpose ... 1 Terms/Usage ... 1 Introduction... 2 Gigabit Ethernet Technology ... 2 Fast Ethernet Technology ... 3 Switching Technology ... 3 Features... 4 Technical Specifications ... 5 Unpacking and Installation ... 9 Unpacking...
  • Page 3 SmartConsole Utility Features ... 19 Menu Toolbar... 19 Discovery List... 21 Monitor List ... 22 Device Setting... 24 Web-based Utility ... 26 Login... 26 Tool Menu... 28 Setup Menu ... 29 System > System Setting ... 30 System > Trap Setting... 31 System >...
  • Page 4 Monitoring > Statistics... 53...

  • Page 5: About This Guide

    ABOUT THIS GUIDE Thank you and congratulations on your purchase of the DGS-1248T 48-Port 10/100/1000 Mbps with 4 Combo Mini GBIC Gigabit Smart Switch. This device integrates 1000Mbps Gigabit Ethernet, 100Mbps Fast Ethernet and 10Mbps Ethernet network capabilities in a highly flexible package.

  • Page 6: Introduction

    INTRODUCTION This chapter will describe the features of the DGS-1248T and provide 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,...

  • Page 7: Fast Ethernet Technology

    Switching Technology Another approach to push beyond the limits of Ethernet technology is the development of switching technology. A switch bridges Ethernet Among them, 100BASE-T (Fast...

  • Page 8: Features

    Ethernet or Fast Ethernet LAN segments. Switching is a cost-effective way of increasing the total network capacity available to users on a local area network. A switch increases capacity and decreases network loading by dividing a local area network into different segments, which won’t compete with each other...

  • Page 9: Technical Specifications

    ♦ Supports Static MAC setting ♦ D-Link Safeguard Engine support ♦ Supports Simple Network Management Protocol(SNMP) ♦ MIB support for: RFC1213 MIB II, Private MIB ♦ Supports DHCP client ♦ Supports Port setting for Speed, Duplex Mode ♦ Easy configuration via Web Browser　...
  • Page 10 SDRAM for CPU Flash Memory Port Functions Combo ports in the front panel 8M Bytes Prom 2M Bytes - 48 x 10/100/1000BaseT ports Compliant with the following standards: 1. IEEE 802.3 compliance 2. IEEE 802.3u compliance 3. IEEE 802.3ab compliance 4.
  • Page 11 Chassis Dimensions Reset button on the front panel Physical & Environment AC input Operation Temperature Storage Temperature -10~70°C Humidity Power consumption 99.7(watts) Heat Dissipation MTBF to 40km, Single-Mode 4. DEM-331R (TX-1310/RX-1550nm), up to 40km, Single-Mode -Compliant to the following standards: 1.
  • Page 12 Emission (EMI) and Safety Certifications EMI-EMC Compliance: FCC Class A/ICES-003 Class A(FCC Part 15B), CE Class A(EN55022/24), C-Tick ClassA(AS/NZS CISPR 22) , VCCI Class A(VCCI-2005) Safety Compliance: cUL(UL 60950-1), LVD(EN 60950-1)

  • Page 13: Unpacking And Installation

    This chapter provides unpacking and installation information for the Smart Switch. Unpacking Carefully unpack the contents of the Smart Switch from the box and locate the following items: One DGS-1248T Gigabit Smart Switch One AC power cord, suitable for the local electrical power voltage...

  • Page 14: Rack Mounting

    Leave at least 10cm (about 4 inches) of space at the front and rear of the switch for ventilation. Install the DGS-1248T on a sturdy, level surface that can support its weight, or in an EIA standard-size equipment rack. For information on rack installation, see the next section, Rack Mounting.

  • Page 15: Connecting Network Cable

    Use the screws provided with the equipment rack or chassis to mount the Switch in the rack. Figure 3 – Mount the Switch in the rack or chassis Connecting Network Cable The DGS-1248T has 48-Ports 10/100/1000Mbps that support 1000Mbps Gigabit Ethernet that can operate in Auto-negotiate...

  • Page 16: Ac Power

    AC Power The DGS-1248T can be used with an AC power supply of 100~240V AC, 50~60Hz. The power switch is located at the rear of the unit adjacent to the AC power connector and the system fan.

  • Page 17: Identifying External Components

    Comprehensive LED indicators display the status of the switch and the network (see the Understanding LED Indicators section). 1000 BASE-T Twisted Pair Ports (Port 1~48) The DGS-1248T is equipped with 48 gigabit twisted pair ports that are auto negotiable 10/100/1000Mbps and also support auto...

  • Page 18: Rear Panel

    10/100/1000 BASE-T / Mini GBIC Combo Ports (Option Port 45~48) The Switch is also equipped with four combo 10/100/1000 Base-T / Mini GBIC ports, supporting optional 1000BASE-SX/LX Mini GBIC modules for fiber uplinks.

  • Page 19: Understanding Led Indicators

    Figure 6 – LED indicators of the Switch Power and System LEDs Power LEDs When the Power LED light is on, the Switch is receiving power. When the Power LED light is off, the power cord is improperly connected.
  • Page 20 Link/Act When the Link/Act LED light is on, the respective port is successfully connected to an Ethernet network. Blinking When the Link/Act LED is blinking, the port is transmitting or receiving data on the Ethernet network. No link. 1000Mbps (Shown in Green) When the LED light is a solid green, the respective port is connected to a 1000Mbps Gigabit Ethernet network.
  • Page 21 Option Ports 45~48 Mini GBIC Status LEDs Link/Act When the Mini GBIC module is installed and connected to a network, the Link/Act LED light is on. Blinking When the Link/Act LED is blinking, the Mini GBIC module is receiving data on a network. No link.

  • Page 22: Configuration

    CONFIGURATION Through a web browser, the features and functions of the DGS-1248T Switch can be configured for optimum use. Supported web browsers The embedded Web-based Utility currently supports the following web browsers: • Microsoft Internet Explorer ver. 6.0, 5.5 •...

  • Page 23: Smartconsole Utility Features

    SmartConsole Utility Features The SmartConsole Utility is divided into four parts, a Menu Toolbar of functions at the top, Discovery List, Monitor List, and Device Setting. Menu Toolbar The Menu Toolbar in the SmartConsole Utility has four main tabs, File, View, Option, and Help. File includes: Monitor save, Monitor save as, Monitor load and Exit.
  • Page 24 Group Interval establishes the intervals (in seconds) that the Web-Smart Switch will be discovered in the SmartConsole Utility Discovery List. NOTE: If the Group Interval is set to 0, IGMP snooping must be disabled or else the Web-Smart Switch will not be discovered.

  • Page 25: Discovery List

    Help includes: information About the SmartConsole Utility, such as the software version. Discovery List This is the list where all Web-Smart devices on the network are discovered. By pressing the Discovery button, all the Web-Smart devices are listed in the discovery list. Double click or press the Add to monitor list button to select a device from the Discovery List and add it to the Monitor List.

  • Page 26: Monitor List

    DHCP: uses a client/server model to obtain lease of an IP address from a DHCP server as part of the network boot process. Location: Shows the appointed description for the device location. Trap IP: Shows the IP where the Trap information will be sent. Subnet Mask: Shows the Subnet Mask set of the device.
  • Page 27 The symbol “ ” represents a new trap signal, and will disappear after the event record is reviewed (clicked). Note: To receive Trap information, the switch must be configured with Trap IP and Trap Events, available from the Trap Setting menu.

  • Page 28: Device Setting

    Delete Item: Deletes the device from the Monitor List. Device Setting Function buttons of the Device Setting section provide several options. Configuration Setting: In the Configuration Setting, the following settings are available: Product Name, MAC Address, IP Address, Subnet Mask, Gateway, Set Trap to (Trapping IP Address), System name, Location, Password and DHCP ON/OFF (OFF is default).
  • Page 29 Utility supports, see Supported web browsers on page 18. DHCP Refresh: select a device in the Monitor List and press the “DHCP Refresh”, and enter the password (if applicable) to trigger the Web-Smart Switch to request an IP address from a DHCP Server. Figure 13 – DHCP Refresh...

  • Page 30: Web-Based Utility

    Web-based Management The DGS-1248T Web-Smart Switch has a web browser GUI interface for configuring the Switch through a web browser. To see the list of web browsers the Web-based Utility supports, see Supported web browsers on page 18. A network administrator can manage, control and monitor the switch from the local LAN.
  • Page 31 Once you have successfully logged in, the device status page will appear. In the top right corner the user name (default ‘admin’) is displayed with the IP address of the Switch. Below this is a Logout option for use when the session is complete.

  • Page 32: Tool Menu

    Configuring Backup and Restoration, Firmware Backup and Upload, and System Reboot. Figure 17 – Tool Menu Reset: Provides a safe reset option for the Switch. All configurations will be reset to default. Figure 18 – Tool Menu > Reset Configure Backup and Restore: Allows the current configuration settings to be saved to a file (not including the password), and if necessary, to be restored from a backup.

  • Page 33: Setup Menu

    Firmware Backup and Upload: Allows for the firmware to be saved, or for an existing firmware file to be uploaded to the Switch. Figure 20 – Tool Menu > Firmware Backup and Upload System Reboot: Provides a safe way to reboot the system. Ensure the configuration has been saved, or all the changes you just made may be lost after system reboot.

  • Page 34: System > System Setting

    System > System Setting The System Setting includes IP Information and System 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.

  • Page 35: System > Trap Setting

    Web-based Utility. When the Login Timeout expires, the Web-based Utility requires a re-login before using the Utility again. The Group Interval send IGMP v1 report packet by switch, it is for SmartConsole Utility to discovery our switch when we in IGMP protocol, zero means disable Group Interval, and 120~1225 means send IGMP v1 report according the value which unit is seconds.

  • Page 36: System > Port Setting

    System Event: Monitors the system’s 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 Events: Monitors the fiber port status. Link Up/Link Down: Traps fiber connection information. Twisted pair Port Events: Monitors the copper cable port status.
  • Page 37 NOTE: Be sure to adjust port speed settings appropriately after changing connected cable media types . Flow Control: This setting determines if the Switch handles flow control. Set to Enable to avoid data transfer overflows. Default setting for all ports is Disable.

  • Page 38: 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).
  • Page 39 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.

  • Page 40: System > Password Access Control

    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 27 – System > Password Access Control Configuration >...
  • Page 41 The IEEE 802.1Q VLAN Configuration page provides powerful VID management functions. The original settings have the VID as 01, named “default”, and all 48 ports as “Untagged” (see Figure 29). 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 48 as Untag, Tag, or Not Member.
  • Page 42 Figure 29 – Configuration > 802.1Q VLAN > Add VID Figure 30 – Configuration > 802.1Q VLAN > Example VIDs...

  • Page 43: Configuration > Trunking

    Figure 31 – Configuration > 802.1Q VLAN > VID Assignments 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.

  • Page 44: Configuration > Igmp Snooping

    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.
  • Page 45 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 33 – Configuration > IGMP Snooping Configuration By default, IGMP is Disabled. If Enabled, the IGMP Global Settings will need to be entered: Query Interval (60-600 sec): The Query Interval is the interval between General Queries sent.
  • Page 46 Robustness Variable (1-255 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.
  • Page 47 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.

  • Page 48: Configuration > 802.1D Spanning Tree

    Figure 35 – 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.
  • Page 49 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.

  • Page 50: 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.

  • Page 51: Qos > 802.1P Default Priority

    QoS > 802.1p Default Priority This feature displays the status Quality of Service priority levels of each port, and for packets that are untagged, the switch will assign the priority in the tag depending on your configuration. Figure 38 – QoS > 802.1p Default Priority...

  • Page 52: Security > Safeguard Engine

    Security > Safeguard Engine D-Link’s Safeguard Engine is a robust and innovative technology that automatically throttles the impact of packet flooding into the switch's CPU. This function helps protect the Web-Smart Switch from being interrupted by malicious viruses or worm attacks. By default this is Enabled.
  • Page 53 IEEE-802.1X provides a security standard for network access control, especially in Wi-Fi wireless networks. 802.1X holds a network port disconnected until authentication is completed. The switch uses Extensible Authentication Protocol over LANs (EAPOL) to exchange authentication protocol client identity (such as a user name) with the client, and forward it to another remote RADIUS authentication server to verify access rights.
  • Page 54 Key: Masked password matching the Radius Server Key. Confirm Key: Enter the Key a second time for confirmation. TxPeriod: Sets the number of seconds that the switch waits for a response to an EAP-request/identity frame from the client before retransmitting the request. Default is 24 seconds.

  • Page 55: Security > Mac Address Table > Static Mac

    This page provides two distinct features. The top table provides the ability to turn off auto learning Mac address if a port isn't connected to an uplink Switch (i.e. DHCP Server). By default, this feature is OFF (disabled). The Macs listed on this table may only connect from corresponding ports and VIDs, in order to protect the network from illegal Macs.

  • Page 56: Security > Mac Address Table > Dynamic Forwarding Table

    Security > Mac Address Table > Dynamic Forwarding Table For each port, this table displays the Mac address of each packet passing through the Switch. To add a Mac address to the Static Mac Address List, click the Add checkbox associated with the identified packet.
  • Page 57 Monitoring > Statistics The Statistics screen displays the status of each port packet count. Figure 44 – 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.
  • Page 58 Figure 45 – Monitoring > Port Statistics...

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