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D-Link DGS-3048 - Switch Product Manual

D-Link DGS-3048 - Switch Product Manual

Managed 48-port gigabit ethernet switch
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Summary of Contents for D-Link DGS-3048 - Switch

  • Page 1 D-Link ™ DGS-3048 Managed 48-Port Gigabit Ethernet Switch Manual...
  • Page 3 Reproduction in any manner whatsoever without the written permission of D-Link Computer Corporation is strictly forbidden. Trademarks used in this text: D-Link and the D-Link logo are trademarks of D-Link Computer Corporation; Microsoft and Windows are registered trademarks of Microsoft Corporation.

  • Page 4: Table Of Contents

    DGS-3048 Gigabit Ethernet Switch Manual Table of Contents Intended Readers................................... 6 Notes, Notices, and Cautions ..............................6 Safety Cautions ..................................7 General Precautions for Rack-Mountable Products ......................8 Introduction..................................... 1 Features ....................................1 Ports ...................................... 1 Performance Features................................1 Management..................................1 Unpacking and Setup................................
  • Page 5 DGS-3048 Gigabit Ethernet Switch Manual Login to Web Manager ............................... 16 Web-based User Interface ..............................18 Areas of the User Interface ..............................18 Switch Information ................................19 Administration ..................................21 Switch Information ................................21 IP Address................................... 22 Port Configuration................................23 Port Settings ..................................
  • Page 6 DGS-3048 Gigabit Ethernet Switch Manual Forwarding and Filtering ..............................60 Unicast Forwarding................................. 60 Multicast Forwarding ..............................61 Spanning Tree ..................................62 802.1s MSTP................................... 62 802.1w Rapid Spanning Tree............................63 Port Transition States ..............................63 Edge Port..................................63 P2P Port ..................................64 802.1d/802.1w/802.1s Compatibility ..........................
  • Page 7 Product Registration................................122 D-Link Europe Limited Product Warranty ........................123 D-Link Europe Limited Produktgarantie .......................... 125 D-Link Europe a limité la garantie des produits ....................... 127 Garantía limitada del producto D-LINK Europa....................... 129 D-Link Europe Termini di Garanzia dei Prodotti ......................131...

  • Page 8: Intended Readers

    DGS-3048 Gigabit Ethernet Switch Manual Preface The DGS-3048 Manual is divided into chapters that describe the system installation and operating instructions with examples. Section 1, “Introduction” – Describes the Switch and its features. Section 2, “Unpacking and Setup” – Helps you get started with the basic installation of the Switch. Section 3, “Identifying External Components”...

  • Page 9: Safety Cautions

    DGS-3048 Gigabit Ethernet Switch Manual Safety Instructions Use the following safety guidelines to ensure your own personal safety and to help protect your system from potential damage. Throughout this safety section, the caution icon ( ) is used to indicate cautions and precautions that you need to review and follow.

  • Page 10: General Precautions For Rack-Mountable Products

    DGS-3048 Gigabit Ethernet Switch Manual • Position system cables and power cables carefully; route cables so that they cannot be stepped on or tripped over. Be sure that nothing rests on any cables. • Do not modify power cables or plugs. Consult a licensed electrician or your power company for site modifications. Always follow your local/national wiring rules.
  • Page 11 DGS-3048 Gigabit Ethernet Switch Manual Safety Instructions (continued) Always load the rack from the bottom up, and load the heaviest item in the rack first. Make sure that the rack is level and stable before extending a component from the rack. Use caution when pressing the component rail release latches and sliding a component into or out of a rack;...

  • Page 12: Protecting Against Electrostatic Discharge

    DGS-3048 Gigabit Ethernet Switch Manual Protecting Against Electrostatic Discharge Static electricity can harm delicate components inside your system. To prevent static damage, discharge static electricity from your body before you touch any of the electronic components, such as the microprocessor. You can do so by periodically touching an unpainted metal surface on the chassis.

  • Page 13: Introduction

    DGS-3048 Gigabit Ethernet Switch Manual Introduction This section describes the features of the DGS-3048. Features The DGS-3048 was designed for departmental and enterprise connections. As an all-gigabit-port Switch, it is ideal for backbone and server connection. Powerful and versatile, the Switch eliminates network bottlenecks while giving users the capability to fine-tune performance Switch features include: Ports...
  • Page 14 DGS-3048 Gigabit Ethernet Switch Manual – MIB-II (RFC 1213) – 802.1P/Q MIB (RFC 2674) – Ethernet-like MIB (RFC 1643) – Private MIB – Mini-RMON MIB (RFC 1757) – four groups. The RMON specification defines the counters for the receive functions only. However, the DGS-3048 provides counters for both receive and transmit functions. •...

  • Page 15: Unpacking And Setup

    D-View 5.1 demo CD-ROM • This Manual with Registration Card on CD-ROM If any item is found missing or damaged, please contact your local D-Link reseller for replacement. Installation Use the following guidelines when choosing a place to install the Switch: •...

  • Page 16: Rack Installation

    DGS-3048 Gigabit Ethernet Switch Manual Rack Installation The DGS-3048 can be mounted in an EIA standard-sized, 19-inch rack, which can be placed in a wiring closet with other equipment. To install, attach the mounting brackets on the Switch’s side panels (one on each side) and secure them with the screws provided.

  • Page 17: Power Failure

    DGS-3048 Gigabit Ethernet Switch Manual Power Failure As a precaution in the event of a power failure, unplug the Switch. When power is resumed, plug the Switch back in. External Redundant Power System The Switch supports an external redundant power system. Figure 2-3.

  • Page 18: Identifying External Components

    DGS-3048 Gigabit Ethernet Switch Manual Identifying External Components This chapter describes the front panel, rear panel, side panels, and LED indicators of the DGS-3048. Front Panel The front panel of the Switch consists of LED indicators, an RS-232 communication port, 48 1000BASE-T ports, and four mini-GBIC combo ports.

  • Page 19: Led Indicators

    DGS-3048 Gigabit Ethernet Switch Manual Figure 3-3. Side Panel Views of the Switch • The system fans are used to dissipate heat. The sides of the system also provide heat vents to serve the same purpose. Do not block these openings, and leave at least 6 inches of space at the rear and sides of the Switch for proper ventilation.

  • Page 20: Connecting The Switch

    DGS-3048 Gigabit Ethernet Switch Manual Connecting the Switch This chapter describes how to connect the DGS-3048 to your Gigabit Ethernet network. Switch to End Node End nodes include PCs outfitted with a 10, 100, or 1000 Mbps RJ-45 Ethernet/Fast Ethernet/Gigabit Ethernet Network Interface Card (NIC) and most routers.

  • Page 21: Switch To Core Router Switch

    DGS-3048 Gigabit Ethernet Switch Manual Figure 4-2. Switch Connected to a Normal (non-Uplink) Port on a Hub or Switch Using a Straight or Crossover Cable Switch to Core Router Switch This connection can be accomplished using the following fiber optic media: •...

  • Page 22: Introduction To Switch Management

    DGS-3048 Gigabit Ethernet Switch Manual Introduction to Switch Management Management Options This system may be managed out-of-band through the console port on the front panel or in-band using Telnet. The user may also choose the web-based management, accessible through a web browser. Web-based Management Interface After you have successfully installed the Switch, you can configure the Switch, monitor the LED panel, and display statistics graphically using a web browser, such as Netscape Navigator (version 6.2 and higher) or Microsoft®...

  • Page 23: First Time Connecting To The Switch

    DGS-3048 Gigabit Ethernet Switch Manual NOTE: When you use HyperTerminal with the Microsoft® Windows® 2000 operating system, ensure that you have Windows 2000 Service Pack 2 or later installed. Windows 2000 Service Pack 2 allows you to use arrow keys in HyperTerminal's VT100 emulation.

  • Page 24: Password Protection

    DGS-3048 Gigabit Ethernet Switch Manual User Name:xxxx DGS3048# Figure 5-2. Command Prompt NOTE: The first user automatically gets Administrator level privileges. It is recommended to create at least one Admin-level user account for the Switch. Password Protection The DGS-3048 does not have a default user name and password. One of the first tasks when settings up the Switch is to create user accounts.

  • Page 25: Snmp Settings

    DGS-3048 Gigabit Ethernet Switch Manual 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.
  • Page 26 DGS-3048 Gigabit Ethernet Switch Manual DGS3048# show switch Device Type : Ethernet Switch MAC Address : 00:23:46:05:54:00 IP Address : 10.6.22.111 VLAN Name Subnet Mask : 255.255.255.224 Default Gateway : 10.6.22.97 Boot PROM Version : 1.0.0.02 Firmware Version : 1.0.0.10 Hardware Version : 00.01.00 System Name...

  • Page 27: Connecting Devices To The Switch

    DGS-3048 Gigabit Ethernet Switch Manual Connecting Devices to the Switch After you assign IP addresses to the Switch, you can connect devices to the Switch. To connect a device to an SFP transceiver port: • Use your cabling requirements to select an appropriate SFP transceiver type. •...

  • Page 28: Web-Based Network Management

    DGS-3048 Gigabit Ethernet Switch Manual Web-Based Network Management Introduction The DGS-3048 offers an embedded Web-based (HTML) interface allowing users to manage the Switch from anywhere on the network through a standard browser, such as Opera, Netscape Navigator/Communicator, or Microsoft Internet Explorer. The Web browser acts as a universal access tool and can communicate directly with the Switch using the HTTP protocol.
  • Page 29 DGS-3048 Gigabit Ethernet Switch Manual Figure 6-1. Enter Network Password Dialog Box...

  • Page 30: Web-Based User Interface

    DGS-3048 Gigabit Ethernet Switch Manual Web-based User Interface The user interface provides access to various Switch configuration and management windows, allows you to view performance statistics, and permits you to graphically monitor the system status. Areas of the User Interface The figure below shows the user interface.

  • Page 31: Switch Information

    DGS-3048 Gigabit Ethernet Switch Manual NOTE: Be sure to configure the user name and password in the User Account Management window (Administration → User Accounts) before connecting the Switch to the greater network. Switch Information Figure 6-3. Switch Information (Basic Settings) Window The following fields can be set: Parameter Description...
  • Page 32 DGS-3048 Gigabit Ethernet Switch Manual Switch 802.1x The Switch’s 802.1x function may be enabled by port; the default is Disabled. This field must be enabled to view and configure certain windows for 802.1x. More information regarding 802.1x, its functions and implementation can be found later in this section, under the Security →...

  • Page 33: Administration

    DGS-3048 Gigabit Ethernet Switch Manual Administration The first Web Manager main folder is Administration and includes the following windows and sub-folders: IP Address, Switch Information, Advanced Settings, Port Configuration, Port Mirroring, Link Aggregation, IGMP Snooping, Spanning Tree, Forwarding & Filtering, VLANs, SNTP Settings, QoS, MAC Notification, System Log Server, Port Access Entity, and Static ARP Settings, as well as secondary windows.

  • Page 34: Ip Address

    DGS-3048 Gigabit Ethernet Switch Manual Parameter Description system. You may also want to include a phone number or extension. IP Address Figure 7-2. Switch IP Settings Window This window is used to determine whether the Switch should get its IP Address settings from the user (Manual), a DHCP server.

  • Page 35: Port Configuration

    DGS-3048 Gigabit Ethernet Switch Manual Port Configuration Port Settings Port settings can be done in the following window. To open the Port Configuration Window click on the Port Configuration folder and choose the Port Settings link. Figure 7- 3. Port Configuration Window To configure Switch ports: 1.
  • Page 36 DGS-3048 Gigabit Ethernet Switch Manual Parameter Description From/To These two fields allow you to specify the range of ports included in the description State <Enabled> Toggle the State field to either enable or disable a given port or group of ports. Speed/Duplex <Auto>...

  • Page 37: Port Description

    DGS-3048 Gigabit Ethernet Switch Manual Port Description Port settings are presented in following window. To open the Port Description Window click on the Port Configuration folder and choose the Port Description link. Figure 7- 4. Port Description Window The following parameters can be set: Parameter Description From/To...
  • Page 38 DGS-3048 Gigabit Ethernet Switch Manual Figure 7- 5. User Account Management Window The information on the window is described as follows: Parameter Description User Name Displays all current users for the Switch. Access Right Displays the current access level assigned to each corresponding user. There are two access levels: User and Admin.

  • Page 39: Admin And User Privileges

    DGS-3048 Gigabit Ethernet Switch Manual Figure 7- 7. User Account Modify Table Window (Edit) To edit a User Account, fill in the appropriate information in the Old Password, New Password, and Confirm New Password fields. Click Apply to make your change take effect. The information on the window is described as follows: Parameter Description...

  • Page 40: Port Mirroring

    DGS-3048 Gigabit Ethernet Switch Manual Management Admin User User Account Management Add/Update/Delete User Accounts View User Accounts Table 7-1. Admin and User Privileges After establishing a User Account with Admin-level privileges, be sure to save the changes at the Save Changes page. Port Mirroring Port mirroring monitors and mirrors network traffic by forwarding copies of incoming and outgoing packets from a monitored port to a monitoring port.

  • Page 41: System Log Settings

    DGS-3048 Gigabit Ethernet Switch Manual cannot be the same port. System Log Settings The Switch can send Syslog messages to up to four designated servers using the System Log Server. In the Administration folder, click System Log Settings, to view the window shown below. Figure 7- 9.

  • Page 42: Sntp Settings

    DGS-3048 Gigabit Ethernet Switch Manual Parameter Description kernel messages user-level messages mail system system daemons security/authorization messages messages generated internally by Syslog line printer subsystem network news subsystem UUCP subsystem clock daemon security/authorization messages FTP daemon NTP subsystem log audit log alert clock daemon local use 0 (local0)
  • Page 43 DGS-3048 Gigabit Ethernet Switch Manual Figure 7- 11. Current Time: Status Window The following parameters can be set or are displayed: Parameter Description Current Time: Status Current Time Displays the time when the Switch was initially started for this session. Time Source Displays the time source for the system.

  • Page 44: Time Zone And Dst

    DGS-3048 Gigabit Ethernet Switch Manual Parameter Description Year Enter the current year, if you want to update the system clock. Month Enter the current month, if you would like to update the system clock. Enter the current day, if you would like to update the system clock. Enter the current time in hours and minutes, if you would like to update the system Time in HH MM SS clock.
  • Page 45 DGS-3048 Gigabit Ethernet Switch Manual Figure 7- 12. Time Zone and DST Settings Window The following parameters can be set: Parameter Description Time Zone and DST Settings Daylight Saving Use this pull-down menu to enable or disable the DST Settings. Time State Daylight Saving Use this pull-down menu to specify the amount of time that will constitute your local...

  • Page 46: Tftp Services

    DGS-3048 Gigabit Ethernet Switch Manual Parameter Description HH:MM Mean Time (GMT.) DST Repeating Settings - Using repeating mode will enable DST seasonal time adjustment. Repeating mode requires that the DST beginning and ending date be specified using a formula. For example, specify to begin DST on Saturday during the second week of April and end DST on Sunday during the last week of October.

  • Page 47: Download Firmware

    DGS-3048 Gigabit Ethernet Switch Manual Download Firmware To update the Switch's firmware, click on the TFTP Services link in the Administration folder: Figure 7- 13. TFTP Services Window To download firmware, configure the following fields and click Start. Parameter Description Active Select the activity type Server IP Address...

  • Page 48: Snmp Manager

    DGS-3048 Gigabit Ethernet Switch Manual SNMP Manager 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.

  • Page 49: Snmp Group Table

    DGS-3048 Gigabit Ethernet Switch Manual Figure 7- 15. SNMP View Table Configuration Window The SNMP Group created with this table maps SNMP users (identified in the SNMP User Table) to the views created in the previous window. The following parameters can be set: Parameter Description View Name...

  • Page 50: Snmp User Table

    DGS-3048 Gigabit Ethernet Switch Manual Figure 7- 17. SNMP Group Table Configuration Window The following parameters can be set: Parameter Description Group Name Type an alphanumeric string of up to 32 characters. This is used to identify the new SNMP group of SNMP users. Read View Name This name is used to specify the SNMP group created can request SNMP messages.
  • Page 51 DGS-3048 Gigabit Ethernet Switch Manual Figure 7- 18. SNMP User Table Window To delete an existing entry, click the Delete icon in the right-hand column that corresponds to the port you want to remove. To create a new entry, click the Add button, a separate window will appear. Figure 7- 19.

  • Page 52: Snmp Community Table

    DGS-3048 Gigabit Ethernet Switch Manual Figure 7- 20. SNMP User Table Display Window SNMP Community Table Use this table to create an SNMP community string to define the relationship between the SNMP manager and an agent. The community string acts like a password to permit access to the agent on the Switch. One or more of the following characteristics can be associated with the community string: •...

  • Page 53: Snmp Host Table

    DGS-3048 Gigabit Ethernet Switch Manual Parameter Description View Name Type an alphanumeric string of up to 32 characters that is used to identify the group of MIB objects that a remote SNMP manager is allowed to access on the Switch. The view name must exist in the SNMP View Table.

  • Page 54: Snmp Engine Id

    DGS-3048 Gigabit Ethernet Switch Manual Figure7- 23. SNMP Host Table Configuration Window The following parameters can be set: Parameter Description Host IP Address Type the IP address of the remote management station that will serve as the SNMP host for the Switch. SNMP Version V1 - To specifies that SNMP version 1 will be used.
  • Page 55 DGS-3048 Gigabit Ethernet Switch Manual The Trap configuration window enables/ disables SNMP Trap generation. It is possible to enable SNMP Trap during authentication. Figure 7- 25. SNMP Trap Configuration window To change the SNMP Trap Configuration, select the desired options and click the Apply button.

  • Page 56: L2 Features

    DGS-3048 Gigabit Ethernet Switch Manual L2 Features VLANs Understanding IEEE 802.1p Priority Priority tagging is a function defined by the IEEE 802.1p standard designed to provide a means of managing traffic on a network where many different types of data may be transmitted simultaneously. It is intended to alleviate problems associated with the delivery of time critical data over congested networks.

  • Page 57: Ieee 802.1Q Vlans

    DGS-3048 Gigabit Ethernet Switch Manual The DGS-3048 supports IEEE 802.1Q VLANs. The port untagging function can be used to remove the 802.1Q tag from packet headers to maintain compatibility with devices that are tag-unaware. The Switch's default is to assign all ports to a single 802.1Q VLAN named "default." The "default"...

  • Page 58: 802.1Q Vlan Tags

    DGS-3048 Gigabit Ethernet Switch Manual Figure 8- 1. IEEE 802.1Q Packet Forwarding 802.1Q VLAN Tags The figure below shows the 802.1Q VLAN tag. There are four additional octets inserted after the source MAC address. Their presence is indicated by a value of 0x8100 in the EtherType field. When a packet's EtherType field is equal to 0x8100, the packet carries the IEEE 802.1Q/802.1p tag.
  • Page 59 DGS-3048 Gigabit Ethernet Switch Manual Figure 8- 2. IEEE 802.1Q Tag The EtherType and VLAN ID are inserted after the MAC source address, but before the original EtherType/Length or Logical Link Control. Because the packet is now a bit longer than it was originally, the Cyclic Redundancy Check (CRC) must be recalculated.

  • Page 60: Port Vlan Id

    DGS-3048 Gigabit Ethernet Switch Manual Port VLAN ID Packets that are tagged (are carrying the 802.1Q VID information) can be transmitted from one 802.1Q compliant network device to another with the VLAN information intact. This allows 802.1Q VLANs to span network devices (and indeed, the entire network, if all network devices are 802.1Q compliant).

  • Page 61: Default Vlans

    DGS-3048 Gigabit Ethernet Switch Manual VID) as the ingress port. If it does not, the packet is dropped. If it has the same VID, the packet is forwarded and the destination port transmits it on its attached network segment. This process is referred to as ingress filtering and is used to conserve bandwidth within the Switch by dropping packets that are not on the same VLAN as the ingress port at the point of reception.

  • Page 62: Static Vlan Entry

    DGS-3048 Gigabit Ethernet Switch Manual Figure 8- 4. VLAN Status Window Parameter Description VLAN ID Displays the VLAN ID of an existing VLAN in the Modify window. VLANs can be identified by either the VID or the VLAN name. VLAN Name Displays the entry of a name for the new VLAN.
  • Page 63 DGS-3048 Gigabit Ethernet Switch Manual Figure 8- 6. Second 802.1Q Static VLANs Window (Add) To return to the first 802.1Q Static VLANs window, click the Show All Static VLAN Entries link. To change an existing 802.1Q VLAN entry, click the Modify button of the corresponding entry you wish to modify. A new window will appear to configure the port settings and to assign a unique name and number to the new VLAN.
  • Page 64 DGS-3048 Gigabit Ethernet Switch Manual Figure 8- 7. Second 802.1Q Static VLANs Window (Modify) The following fields can then be set in either the Add or Modify 802.1Q Static VLANs windows: Parameter Description VID (VLAN ID) Allows the entry of a VLAN ID in the Add window, or displays the VLAN ID of an existing VLAN in the Modify window.

  • Page 65: Gvrp Port Settings

    DGS-3048 Gigabit Ethernet Switch Manual Parameter Description Forbidden Select this to specify the port as not being a member of the VLAN and that the port is forbidden from becoming a member of the VLAN dynamically. Click Apply to implement changes made. GVRP Port Settings In the L2 Futures menu, open the VLANs folder and click GVRP Settings.
  • Page 66 DGS-3048 Gigabit Ethernet Switch Manual Figure 8- 8. GVRP Settings Window The following fields can be set: Parameter Description From/To These two fields allow you to specify the range of ports that will be included in the VLAN that you are creating using the GVRP Settings window. Ingress Check This field can be toggled using the space bar between Enabled and Disabled.

  • Page 67: Link Aggregation

    DGS-3048 Gigabit Ethernet Switch Manual Parameter Description PVID This field in the 802.1Q Port Table shows the current PVID assignment for each port, which may be manually assigned to a VLAN when created in the 802.1Q Port Settings table. The Switch's default is to assign all ports to the default VLAN with a VID of 1.The PVID is used by the port to tag outgoing, untagged packets, and to make filtering decisions about incoming packets.
  • Page 68 DGS-3048 Gigabit Ethernet Switch Manual The Switch treats all ports in a trunk group as a single port. Data transmitted to a specific host (destination address) will always be transmitted over the same port in a trunk group. This allows packets in a data stream to arrive in the same order they were sent.

  • Page 69: Igmp Snooping

    DGS-3048 Gigabit Ethernet Switch Manual Clicking the Modify button will open the Link Aggregation Group Configuration window, shown below: Figure 8- 11. Link Aggregation Group Configuration Window (Modify) The user-changeable parameters are as follows: Parameter Description State Trunk groups can be toggled between Enabled and Disabled. This is used to turn a port trunking group on or off.

  • Page 70: Current Igmp Snooping Group Entries

    DGS-3048 Gigabit Ethernet Switch Manual Current IGMP Snooping Group Entries Open the IGMP Snooping folder in the L2 Features menu and click on the IGMP Snooping settings link. This will open the Current IGMP Snooping Group Entries window, as shown below: Figure 8- 12.
  • Page 71 DGS-3048 Gigabit Ethernet Switch Manual Figure 8- 14. Current Static Router Port Window Clicking the Modify button will open the Static Router Port Entries window, shown below:...

  • Page 72: Forwarding And Filtering

    DGS-3048 Gigabit Ethernet Switch Manual Figure 8- 15. Current Static Router Port Window (Modify) Forwarding and Filtering Unicast Forwarding Open the Forwarding folder in the Configuration menu and click on the Unicast Forwarding link. This will open the Setup Static Unicast Forwarding Table window, as shown below: Figure 8- 16.

  • Page 73: Multicast Forwarding

    DGS-3048 Gigabit Ethernet Switch Manual Parameter Description Allowed to go port Allows the selection of the port number on which the MAC address entered above resides. Click Apply to implement the changes made. To delete an entry in the Static Unicast Forwarding Table, click the corresponding under the Delete heading.

  • Page 74: Spanning Tree

    802.1d STP will be familiar to most networking professionals. However, since 802.1w RSTP and 802.1s MSTP has been recently introduced to D-Link managed Ethernet switches, a brief introduction to the technology is provided below followed by a description of how to set up 802.1d STP, 802.1w RSTP and 802.1s MSTP.

  • Page 75: 802.1W Rapid Spanning Tree

    DGS-3048 Gigabit Ethernet Switch Manual 3. VLANs that will be shared must be added to the MSTP Instance ID (defined here as a VID List in the Current MST Configuration Identification window when configuring the settings for an MSTI ID). 802.1w Rapid Spanning Tree The Switch implements three versions of the Spanning Tree Protocol, the Multiple Spanning Tree Protocol (MSTP) as defined by the IEEE 802.1s, the Rapid Spanning Tree Protocol (RSTP) as defined by the IEEE 802.1w specification and a...

  • Page 76: P2P Port

    DGS-3048 Gigabit Ethernet Switch Manual P2P Port A P2P port is also capable of rapid transition. P2P ports may be used to connect to other bridges. Under RSTP/MSTP, all ports operating in full-duplex mode are considered to be P2P ports, unless manually overridden through configuration. 802.1d/802.1w/802.1s Compatibility MSTP or RSTP can interoperate with legacy equipment and is capable of automatically adjusting BPDU packets to 802.1d format when necessary.
  • Page 77 DGS-3048 Gigabit Ethernet Switch Manual Figure 8- 21. STP Bridge Global Settings window - MSTP The following parameters can be set: Parameter Description STP Status Use the pull-down menu to enable or disable STP globally on the Switch. The default is Disabled. STP Version Use the pull-down menu to choose the desired version of STP to be implemented on the Switch.

  • Page 78: Stp Port Settings

    DGS-3048 Gigabit Ethernet Switch Manual held for the port will age out. The user may set a hop count from 1 to 20. The default is 20. Forwarding BPDU This field can be Enabled or Disabled. When Enabled, it allows the forwarding of STP BPDU packets from other network devices.

  • Page 79: Mst Configuration Identification

    DGS-3048 Gigabit Ethernet Switch Manual In addition to setting Spanning Tree parameters for use on the switch level, the Switch allows for the configuration of groups of ports, each port-group of which will have its own spanning tree, and will require some of its own configuration settings.
  • Page 80 DGS-3048 Gigabit Ethernet Switch Manual Figure 8- 23. Current MST Configuration Identification Window The window above contains the following information: Parameter Description Configuration Name A previously configured name set on the Switch to uniquely identify the MSTI (Multiple Spanning Tree Instance). If a configuration name is not set, this field will show the MAC address to the device running MSTP.
  • Page 81 DGS-3048 Gigabit Ethernet Switch Manual The user may configure the following parameters to create a MSTI in the Switch. Parameter Description MSTI ID Enter a number between 1 and 15 to set a new MSTI on the Switch. Type Create is selected to create a new MSTI. No other choices are available for this field when creating a new MSTI.

  • Page 82: Mstp Port Information

    DGS-3048 Gigabit Ethernet Switch Manual Parameter Description MSTI ID Displays the MSTI ID previously set by the user. Type This field allows the user to choose a desired method for altering the MSTI settings. The user has two choices. Add VID - Select this parameter to add VIDs to the MSTI ID, in conjunction with the VID List parameter.

  • Page 83: Qos

    DGS-3048 Gigabit Ethernet Switch Manual Advantages of QoS QoS is an implementation of the IEEE 802.1p standard that allows network administrators a method of reserving bandwidth for important functions that require a large bandwidth or have a high priority, such as VoIP (voice-over Internet Protocol), Web browsing applications, file server applications or video conferencing.
  • Page 84 DGS-3048 Gigabit Ethernet Switch Manual • Priority 4 is assigned to the Switch's Q4 queue. • Priority 5 is assigned to the Switch's Q5 queue. • Priority 6 is assigned to the Switch's Q6 queue. • Priority 7 is assigned to the Switch's Q7 queue. For strict priority-based scheduling, any packets residing in the higher priority queues are transmitted first.

  • Page 85: Bandwidth Control

    DGS-3048 Gigabit Ethernet Switch Manual Bandwidth Control Bandwidth control limits the amount of Multicast and Broadcast frames accepted and forwarded by the device. When Layer 2 frames are forwarded, Broadcast and Multicast frames are flooded to all ports on the relevant VLAN.

  • Page 86: Traffic Control

    DGS-3048 Gigabit Ethernet Switch Manual Traffic Control Use the Traffic Control window to enable or disable storm control and adjust the threshold for multicast/broadcast/DLF (Destination Look Up Failure) storms. Traffic control settings are applied to individual Switch modules. To view the following window, click QoS >Traffic Control.

  • Page 87: 802.1P User Priority

    DGS-3048 Gigabit Ethernet Switch Manual The Switch allows the assignment of a default 802.1p priority to each port on the Switch. In the Administration folder open the QoS folder and click 802.1p Default Priority, to view the window shown below. Figure 9- 4.

  • Page 88: Qos Scheduling Mechanism

    DGS-3048 Gigabit Ethernet Switch Manual Figure 9- 5. User Priority Configuration Window Once you have assigned a priority to the port groups on the Switch, you can then assign this Class to each of the four levels of 802.1p priorities. Click Apply to set your changes. QoS Scheduling Mechanism This window allows you to select between a RoundRobin and a Strict mechanism for emptying the priority classes.

  • Page 89: Qos Output Scheduling

    DGS-3048 Gigabit Ethernet Switch Manual Parameter Description RoundRobin Use the weighted round-robin (WRR) algorithm to handle packets in an even distribution in priority classes of service. Click Apply to make your changes take effect. NOTE: The settings you assign to the queues, numbers 0-7, represent the IEEE 802.1p priority tag number.

  • Page 90: Security

    DGS-3048 Gigabit Ethernet Switch Manual Security The second Web Manager main folder is Security and includes the following windows and sub-folders: Trusted Host, Secure Socket Layer (SSL), Secure Shell (SSH), and Access Authentication Control, as well as secondary windows. 802.1x Port Access Entity 802.1x Port-Based Access Control The IEEE 802.1x standard is a security measure for authorizing and authenticating users to gain access to various wired or...

  • Page 91: Authentication Server

    DGS-3048 Gigabit Ethernet Switch Manual Figure 10- 2. Three Functions of 802.1x The following section will explain Client, Authenticator, and Authentication Server in greater detail. Authentication Server The Authentication Server is a remote device that is connected to the same network as the Client and Authenticator, must be running a RADIUS Server program and must be configured properly on the Authenticator (Switch).

  • Page 92: Client

    DGS-3048 Gigabit Ethernet Switch Manual Figure 10- 4. Authenticator Client The Client is simply the workstation that wishes to gain access to the LAN or Switch services. All workstation must be running software that is compliant with the 802.1x protocol. For users running Windows XP, the software is included within the operating system.

  • Page 93: Port-Based Network Access Control

    DGS-3048 Gigabit Ethernet Switch Manual Port-Based Network Access Control The original intent behind the development of 802.1x was to leverage the characteristics of point-to-point in LANs. Any single LAN segment in such an infrastructures has no more than two devices attached to it, one of which is a Bridge Port. The Bridge Port detects events that indicate the attachment of an active device at the remote end of the link, or an active device becoming inactive.
  • Page 94 DGS-3048 Gigabit Ethernet Switch Manual Figure 10- 7. 802.1x Authenticator Parameter Window To configure the parameters, click the port number link.
  • Page 95 DGS-3048 Gigabit Ethernet Switch Manual Parameter Description From and To Enter the port or ports to be set. PortControl This allows you to control the port authorization state. Select forceAuthorized to disable 802.1x and cause the port to transition to the authorized state without any authentication exchange required.
  • Page 96 DGS-3048 Gigabit Ethernet Switch Manual Authenticator and the authentication server. The default setting is 30 seconds. MaxReq The maximum number of times that the Switch will retransmit an EAP Request to the client before it times out of the authentication sessions. The default setting is 2. A constant that defines a nonzero number of seconds between periodic ReAuthPeriod reauthentication of the client.

  • Page 97: Radius Server

    DGS-3048 Gigabit Ethernet Switch Manual RADIUS Server The RADIUS feature of the Switch allows you to facilitate centralized user administration as well as providing protection against a sniffing, active hacker. Click Security> 802.1x > Authentic RADIUS Server to open the Authentic RADIUS Server window shown below: Figure 10- 8.

  • Page 98: Trusted Host

    DGS-3048 Gigabit Ethernet Switch Manual Trusted Host Go to the Security folder and click on the Trusted Host link; the following window will appear. Figure 10- 9.Security IP Management Window Use security IP management to permit remote stations to manage the Switch. If you choose to define one or more designated management stations, only the chosen stations, as defined by IP address, will be allowed management privilege through the web manager or Telnet session.

  • Page 99: Application Authentication Settings

    DGS-3048 Gigabit Ethernet Switch Manual Please note that users granted access to the Switch will be granted normal user privileges on the Switch. To gain access to administrator level privileges, the user must access the Enable Admin using a CLI command. NOTE: TACACS+ is a separate entitie and are not compatible.
  • Page 100 DGS-3048 Gigabit Ethernet Switch Manual Figure 10- 11. Authentication Server Host Settings Window To add an Authentication Server Host, click the Add button, revealing the following window: Figure 10- 12. Authentication Server Host Setting - Add Window Configure the following parameters to add an Authentication Server Host: Parameter Description IP Address...

  • Page 101: Login Method Lists

    DGS-3048 Gigabit Ethernet Switch Manual Login Method Lists This command will configure a user-defined or default Login Method List of authentication techniques for users logging on to the Switch. The sequence of techniques implemented in this command will affect the authentication result. For example, if a user enters a sequence of techniques, for example TACACS+, RADIUS - local, the Switch will send an authentication request to the first TACACS+ host in the server group.
  • Page 102 DGS-3048 Gigabit Ethernet Switch Manual Figure 10- 15. Login Method List – Add Window To define a Login Method List, set the following parameters and click Apply: Parameter Description Method List Name Enter a method list name defined by the user of up to 15 characters. Method 1, 2, 3, 4 The user may add one, or a combination of up to four of the following authentication methods to this method list:...

  • Page 103: Enable Method Lists

    DGS-3048 Gigabit Ethernet Switch Manual Enable Method Lists The Enable Method Lists window is used to set up Method Lists to promote users with user level privileges to Administrator (Admin) level privileges using authentication methods on the Switch. Once a user acquires normal user level privileges on the Switch, he or she must be authenticated by a method on the Switch to gain administrator privileges on the Switch, which is defined by the Administrator.

  • Page 104: Configure Local Enable Password

    DGS-3048 Gigabit Ethernet Switch Manual Parameter Description Method List Name Enter a method list name defined by the user of up to 15 characters. Method 1, 2, 3, 4 The user may add one, or a combination of up to four of the following authentication methods to this method list: local_enable - Adding this parameter will require the user to be authenticated using the local enable password database on the Switch.

  • Page 105: Secure Socket Layer (Ssl)

    DGS-3048 Gigabit Ethernet Switch Manual Secure Socket Layer (SSL) Secure Sockets Layer or SSL is a security feature that will provide a secure communication path between a host and client through the use of authentication, digital signatures and encryption. These security functions are implemented through the use of a ciphersuite, which is a security string that determines the exact cryptographic parameters, specific encryption algorithms and key sizes to be used for an authentication session and consists of three levels: •...

  • Page 106: Secure Shell (Ssh)

    DGS-3048 Gigabit Ethernet Switch Manual Figure 10- 19. SSL Configuration Window To set up the SSL function on the Switch, configure the following parameters and click Apply. Parameter Description Status Use the pull-down menu to enable or disable the SSL status on the switch. The default is Disabled.

  • Page 107: Ssh Configuration

    DGS-3048 Gigabit Ethernet Switch Manual The steps required to use the SSH protocol for secure communication between a remote PC (the SSH client) and the Switch (the SSH server) are as follows: 1. Create a user account with admin-level access using the User Accounts window in the Administration folder. This is identical to creating any other admin-level User Account on the Switch, including specifying a password.
  • Page 108 DGS-3048 Gigabit Ethernet Switch Manual Figure 10- 21. Encryption Algorithm Window The following algorithms may be set: Parameter Description Encryption Algorithm 3DES-CBC Triple Data Encryption Standard encryption algorithm with Cipher Block Chaining. Blow-fish CBC Blowfish encryption algorithm with Cipher Block Chaining. The default is Enabled. AES128-CBC Advanced Encryption Standard AES128 encryption algorithm with Cipher Block Chaining.
  • Page 109 DGS-3048 Gigabit Ethernet Switch Manual Parameter Description Twofish256 Twofish256 encryption algorithm. Data Integrity Algorithm HMAC (Hash for Message Authentication Code) mechanism utilizing the Secure Hash HMAC-SHA1 algorithm. HMAC-MD5 HMAC (Hash for Message Authentication Code) mechanism utilizing the MD5 Message Digest encryption algorithm. Public Key Algorithm HMAC-RSA HMAC (Hash for Message Authentication Code) mechanism utilizing the RSA...

  • Page 110: Monitoring

    DGS-3048 Gigabit Ethernet Switch Manual Monitoring The fourth Web Manager main folder is Monitoring and includes the following windows and sub-folders: Port Utilization, Packets, Errors, Size, MAC Address, Switch History Log, IGMP Snooping Group, IGMP Snooping Forwarding, VLAN Status, Router Port, Session Table, and Port Access Control, as well as secondary windows. CPU Utilization The CPU Utilization window displays the percentage of the CPU utilization.

  • Page 111: Port Utilization

    DGS-3048 Gigabit Ethernet Switch Manual Parameter Description Utilization The percentage of the total available bandwidth being used on the port. Port Utilization The Utilization window displays the percentage of the total available bandwidth being used on the port. To view the port utilization, open the Monitoring folder and then click the Port Utilization link: Figure 11-2.

  • Page 112: Packets

    DGS-3048 Gigabit Ethernet Switch Manual Parameter Description Utilization The percentage of the total available bandwidth being used on the port. Check whether or not to display Utilization. Show/Hide Clear Clicking this button clears all statistics counters on this window. Click Apply to implement your changes. Packets The Web Manager allows various packet statistics to be viewed as either a line graph or a table.

  • Page 113: Umb Cast (Rx)

    DGS-3048 Gigabit Ethernet Switch Manual UMB Cast (RX) Click the UMB Cast (RX) link in the Packets folder of the Monitoring menu to view the following graph of UMB cast packets received on the Switch. Figure 11-4. Rx Packets Analysis Window (line graph for Unicast, Multicast, and Broadcast Packets) To view the UMB Cast Table, click the View Table link, which will show the following table:...

  • Page 114: Transmitted (Tx)

    DGS-3048 Gigabit Ethernet Switch Manual Transmitted (TX) Click the Transmitted (TX) link in the Packets folder of the Monitoring menu to view the following graph of packets transmitted from the Switch. Figure 11-5. Tx Packets Analysis Window (line graph for Bytes and Packets)

  • Page 115: Size

    DGS-3048 Gigabit Ethernet Switch Manual Size The Web Manager allows packets received by the Switch, arranged in six groups and classed by size, to be viewed as either a line graph or a table. Two windows are offered. Figure 11-6. Packet Size Analysis window (line graph)

  • Page 116: Router Port

    DGS-3048 Gigabit Ethernet Switch Manual Router Port This displays the Switch's ports that are currently configured as router ports. A router port configured by a user (using the console or Web-based management interfaces) is displayed as a static router port, designated by an S. A router port that is dynamically configured by the Switch is designated by D.

  • Page 117: Port Access Control

    DGS-3048 Gigabit Ethernet Switch Manual Port Access Control RADIUS Authentication Figure 11-9. RADIUS Authentication Window MAC Address This allows the Switch's dynamic MAC address forwarding table to be viewed. When the Switch learns an association between a MAC address and a port number, it makes an entry into its forwarding table. These entries are then used to forward packets through the Switch.
  • Page 118 DGS-3048 Gigabit Ethernet Switch Manual Figure 11-10. MAC Address Table Window The following fields can be viewed or set: Parameter Description Enter a VLAN ID for the forwarding table to be browsed by. VLAN ID MAC Address Enter a MAC address for the forwarding table to be browsed by. Find Allows the user to move to a sector of the database corresponding to a user defined port, VLAN, or MAC address.

  • Page 119: Igmp Snooping Group

    DGS-3048 Gigabit Ethernet Switch Manual IGMP Snooping Group IGMP Snooping allows the Switch to read the Multicast Group IP address and the corresponding MAC address from IGMP packets that pass through the Switch. The number of IGMP reports that were snooped is displayed in the Reports field. To view the IGMP Snooping Table, click IGMP Snooping Group in the Monitoring menu: Figure 11-11.

  • Page 120: Switch History Log

    DGS-3048 Gigabit Ethernet Switch Manual Figure 11-12. IGMP Snooping Forwarding Table Window The user may search the IGMP Snooping Forwarding Table by VID clicking the top left hand corner Search button. The following field can be viewed: Parameter Description VLAN ID The VLAN ID (VID) of the multicast group.

  • Page 121: Reset

    DGS-3048 Gigabit Ethernet Switch Manual Parameter Description Sequence A counter incremented whenever an entry to the Switch's history log is made. The table displays the last entry (highest sequence number) first. Time Displays the time in days, hours, and minutes since the Switch was last restarted. Log Text Displays text describing the event that triggered the history log entry.

  • Page 122: Logout

    DGS-3048 Gigabit Ethernet Switch Manual Some settings, though, require you to restart the Switch before they will take effect. Restarting the Switch erases all settings in RAM and reloads the stored settings from the NV-RAM. Thus, it is necessary to save all setting changes to NV-RAM before rebooting the Switch.

  • Page 123: Technical Specifications

    DGS-3048 Gigabit Ethernet Switch Manual Technical Specifications Performance Transmission Method Store-and-forward RAM Buffer 512Kbytes per device Packet Filtering/ Forwarding Rate Full-wire speed for all connections. 1,488,095 pps per port (for 1000Mbps) MAC Address Learning Automatic update. Supports 8K MAC address. Priority Queues 8 Priority Queues per port.
  • Page 124 DGS-3048 Gigabit Ethernet Switch Manual General IEEE 802.1P Tagged Packets IEEE 802.3ab 1000BASE-T IEEE 802.3x Full-duplex Flow Control ANSI/IEEE 802.3 NWay auto-negotiation Protocols CSMA/CD Data Transfer Rates Half-duplex Full-duplex Ethernet: 10 Mbps 20 Mbps 100 Mbps 200 Mbps Fast Ethernet: 2000 Mbps (Full duplex only) Gigabit Ethernet: Topology...

  • Page 125: Cable Lengths

    DGS-3048 Gigabit Ethernet Switch Manual Cable Lengths Use the following table to as a guide for the maximum cable lengths: Standard Media Type Maximum Distance Mini GBIC DEM-310GT: SFP Transceiver for 1000BASE-LX, Single-mode fiber 10km module DEM-311GT: SFP Transceiver for 1000BASE-SX, Multi-mode fiber 550m module DEM-314GT: SFP Transceiver for 1000BASE-LHX, Single-mode fiber...

  • Page 126: Glossary

    DGS-3048 Gigabit Ethernet Switch Manual Glossary 1000BASE-T – A specification for Gigabit Ethernet over copper wire (IEEE Std. 802.3ab). The standard defines 1 Gb/s data transfer over distances of up to 100 meters using four pairs of CAT-5 balanced copper cabling and a 5-level coding scheme.
  • Page 127 DGS-3048 Gigabit Ethernet Switch Manual A GBIC allows designers to design one type of device that can be adapted for either optical or copper applications. GBICs also are hot-swappable, which adds to the ease of upgrading electro-optical communication networks. half-duplex – A system that allows packets to be transmitted and received, but not at the same time. Contrasts with full-duplex.
  • Page 128 DGS-3048 Gigabit Ethernet Switch Manual VLAN – Virtual LAN. A group of location- and topology-independent devices that communicate as if they are on a common physical LAN. VLT – Virtual LAN Trunk. A Switch-to-Switch link which carries traffic for all the VLANs on each Switch. VT100 –...

  • Page 129: Warranty And Registration Information

    3kg ist eine Leitung nicht leichter als H05VV-F, 3G, 0.75mm2 einzusetzen. WARRANTIES EXCLUSIVE IF THE D-LINK PRODUCT DOES NOT OPERATE AS WARRANTED ABOVE, THE CUSTOMER'S SOLE REMEDY SHALL BE, AT D-LINK'S OPTION, REPAIR OR REPLACEMENT. THE FOREGOING WARRANTIES AND REMEDIES ARE EXCLUSIVE...

  • Page 130: Limited Warranty

    D-Link offices is provided at the back of this manual, together with a copy of the Registration Card. If a Registration Card for the product in question has not been returned to a D-Link office, then a proof of purchase (such as a copy of the dated purchase invoice) must be provided when requesting warranty service.
  • Page 131 Warranty Period or ninety (90) days, whichever is longer, and is subject to the same limitations and exclusions. If a material defect is incapable of correction, or if D-Link determines that it is not practical to repair or replace the defective Hardware, the actual price paid by the original purchaser for the defective Hardware will be refunded by D-Link upon return to D-Link of the defective Hardware.
  • Page 132 D-Link Systems, Inc., 17595 Mt. Herrmann, Fountain Valley, CA 92708. D-Link will not be held responsible for any packages that are lost in transit to D-Link. The repaired or replaced packages will be shipped to the customer via UPS Ground or any common carrier selected by D-Link.
  • Page 133 equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: • Reorient or relocate the receiving antenna. • Increase the separation between the equipment and receiver. • Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. •...

  • Page 134: Product Registration

    Product Registration http://support.dlink.com/register/ Register your D-Link product online at Product registration is entirely voluntary and failure to complete or return this form will not diminish your warranty rights.

  • Page 135: D-Link Europe Limited Product Warranty

    The Limited Product Warranty set forth below is given by D-LINK (Europe) Ltd. (herein referred to as "D-LINK"). This Limited Product Warranty is only effective upon presentation of the proof of purchase. Upon further request by D-LINK, this warranty card has to be presented, too.

  • Page 136: Product Type

    The replacement part or product takes on the remaining limited warranty status of the removed part or product. The replacement product need not be new or of an identical make, model or part; D-LINK may in its discretion replace the defective product (or any part thereof) with any reconditioned equivalent (or superior) product in all material respects to the defective product.

  • Page 137: D-Link Europe Limited Produktgarantie

    Laufzeit der eingeschränkten Garantie Die Laufzeit der eingeschränkten Garantie beginnt mit dem Zeitpunkt, zu dem das Produkt von D-LINK gekauft wurde. Als Nachweis für den Zeitpunkt des Kaufs gilt der datierte Kauf- oder Lieferbeleg. Es kann von Ihnen verlangt werden, dass Sie zur Inanspruchnahme von Garantiediensten den Kauf des Produkts nachweisen.
  • Page 138 Ein (1) Jahr Die oben aufgeführten Garantielaufzeiten gelten für alle D-LINK-Produkte, die in europäischen Staaten ab dem 1. Januar 2004 von D- LINK oder einem autorisierten Fachhändler oder Distributor verkauft werden. Alle vor dem 1. Januar 2004 von D-LINK oder einem autorisierten Vertragshändler oder Distributor verkauften Produkte haben eine Gewährleistung von 5 Jahren;...

  • Page 139: D-Link Europe A Limité La Garantie Des Produits

    ; ou (f) du feu, de l’eau, d’une catastrophe naturelle ou autre. La présente garantie ne s’applique pas non plus à un produit dont le numéro de série D-LINK aurait été retiré ou altéré de quelque manière que ce soit.
  • Page 140 Les périodes de garantie indiquées ci-dessus s’appliquent à tous les produits D-LINK vendus depuis le 1er janvier 2004 dans les pays européens par D-LINK ou l’un de ses revendeurs ou distributeurs agréés. Tous les produits vendus avant le 1er janvier 2004 dans les pays européens par D-LINK ou l’un de ses revendeurs ou distributeurs agréés bénéficient d’une garantie de 5 ans, excepté...

  • Page 141: Garantía Limitada Del Producto D-Link Europa

    Período de la garantía limitada del producto El período de la garantía limitada del producto se inicia en la fecha en que se realizó la compra a D-LINK. Para el comprador, el comprobante de la fecha de la compra es el recibo de la venta o de la entrega, en el que figura la fecha de la compra del producto. Puede ser necesario tener que presentar el comprobante de la compra a fin de que se preste el servicio de garantía.
  • Page 142 1 de enero del 2004. Todos los productos comprados en países europeos a D-LINK o a uno de sus proveedores o distribuidores autorizados antes del 1 de enero del 2004 cuentan con 5 años de garantía, excepto las fuentes de alimentación, los ventiladores y los accesorios, que cuentan con 2 años de garantía.

  • Page 143: D-Link Europe Termini Di Garanzia Dei Prodotti

    (c) movimentazione impropria; (d) guasto di prodotti o servizi non forniti da D-LINK o non soggetti a una garanzia successiva di D-LINK o a un accordo di manutenzione;...
  • Page 144 Qualora comparisse un difetto o una non conformità, D-LINK avrà l’unico obbligo di riparare o sostituire il prodotto non conforme senza alcun costo per l’acquirente a condizione che il prodotto venga restituito a un Centro di Assistenza autorizzato D-LINK entro il periodo di garanzia.
  • Page 145 TEL: 33-1-30238688 No.202, C1 Building, Huitong Office Park, FAX: 33-1-30238689 No.71, Jianguo Road, Chaoyang District, Beijing, India URL: www.dlink-france.fr D-Link House, Kurla Bandra Complex Road, 100025, China Off CST Road, Santacruz (East), Mumbai - TEL +86-10-58635800 400098. FAX: +86-10-58635799 Netherlands Weena 290 URL: www.dlink.com.cn...

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