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D-Link DI-206 User Manual

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DI-206
ISDN Router
User's Guide
Rev. 03 (June 2000)
6DI206....03
Printed in Taiwan
RECYCLABLE

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Summary of Contents for D-Link DI-206

  • Page 1 DI-206 ISDN Router User’s Guide Rev. 03 (June 2000) 6DI206….03 Printed in Taiwan RECYCLABLE...

  • Page 3: Copyright Statement

    No part of this publication may be reproduced in any form or by any means or used to make any derivative such as translation, transformation, or adaptation without permission from D-Link Corporation/D-Link Systems Inc., as stipulated by the United States Copyright Act of 1976. Trademarks D-Link is a registered trademark of D-Link Corporation/D-Link Systems, Inc.

  • Page 4: Limited Warranty

    Return Material Authorization (RMA) number. If a Registration Card for the product in question has not been returned to D-Link, then a proof of purchase (such as a copy of the dated purchase invoice) must be provided. If Purchaser's circumstances require special handling of warranty correction, then at the time of requesting RMA number, Purchaser may also propose special procedure as may be suitable to the case.
  • Page 5 D-Link makes no warranty that operation of its software products will be uninterrupted or absolutely error-free, and no warranty that all defects in the software product, within or without the scope of D-Link's applicable product documentation, will be corrected.

  • Page 6: Wichtige Sicherheitshinweise

    Wichtige Sicherheitshinweise Bitte lesen Sie sich diese Hinweise sorgfältig durch. Heben Sie diese Anleitung für den spätern Gebrauch auf. Vor jedem Reinigen ist das Gerät vom Stromnetz zu trennen. Vervenden Sie keine Flüssig- oder Aerosolreiniger. Am besten dient ein angefeuchtetes Tuch zur Reinigung. Um eine Beschädigung des Gerätes zu vermeiden sollten Sie nur Zubehörteile verwenden, die vom Hersteller zugelassen sind.
  • Page 7 17. Wenden Sie sich mit allen Fragen die Service und Repartur betreffen an Ihren Servicepartner. Somit stellen Sie die Betriebssicherheit des Gerätes sicher. 18. Zum Netzanschluß dieses Gerätes ist eine geprüfte Leitung zu verwenden, Für einen Nennstrom bis 6A und einem Gerätegewicht gr ßer 3kg ist eine Leitung nicht leichter als H05VV-F, 3G, 0.75mm2 einzusetzen...

  • Page 9: Table Of Contents

    Table of Contents .................1 NTRODUCTION Product Features.......................1 Applications for your DI-206..................4 Internet Access ......................4 Network Address Translation (NAT)............... 5 LAN-to-LAN Enterprise Connections..............5 Telecommuting Server....................5 What This Manual Covers ..................5 What This Manual Doesn’t Cover................7 Other Resources......................7 Packing List .......................7 Additional Installation Requirements..............8...
  • Page 10 Step 7 - Configuring the LAN Port................21 Step 8 – Plugging in All Devices ................24 .......... 25 ONFIGURATION AND ANAGEMENT Console Program Main Menu ................26 System Information....................27 Interface Configuration ..................28 LAN......................... 29 ISDN........................30 Network Configuration..................33 IP Stack Configuration..................... 34 IP Static Route......................
  • Page 11 System Timeout..................... 151 RADIUS A ...........152 SING UTHENTICATION Installing a RADIUS Server................152 Configuring the DI-206 for RADIUS Authentication ........152 Adding Users to the RADIUS Database ............154 A - T ...........155 PPENDIX ROUBLESHOOTING Some Common Problems With the DI-206............155 None of the LEDs are on when you power up the router........
  • Page 12 Can’t PING any station on the LAN ..............156 B - IP C .............158 PPENDIX ONCEPTS IP Addresses ......................158 IP Network Classes ....................159 Subnet Mask ......................160 C – IP P ....162 PPENDIX ROTOCOL AND UMBERS IP Protocol Numbers ................... 162 IP Port Numbers ....................

  • Page 13: Introduction

    Internet single-user account (Network Address Translation) option, extensive network management capabilities, and solid security features. Product Features The DI-206 router is packed with features that give it the flexibility to provide a complete networking solution for almost any small to medium-sized office environment.

  • Page 14: Isdn Leased Line

    ISDN router and 10 Mbps Ethernet hub, and it uses twisted-pair Ethernet cables to connect to the host network. Built-in Hub As a 10 Mbps Ethernet hub, your DI-206 provides six ports for connecting standard Ethernet devices. Five ports are designed for connecting network end nodes—single-user computers, servers, bridges, other routers, etc.—through standard “straight-through”...
  • Page 15 DI-206 ISDN Remote Router Dial On Demand The Dial On Demand feature allows a DI-206 to automatically place a call to a Remote Node whenever there is traffic coming from any workstation on the LAN (Local Area Network) to that remote site.

  • Page 16: Applications For Your Di-206

    Applications for your DI-206 Some applications for the DI-206 include: Internet Access Your DI-206 supports TCP/IP protocol, which is the language used for the Internet. It is also compatible with access servers manufactured by major vendors such as Cisco and Ascend.

  • Page 17: Network Address Translation (Nat)

    Ethernet protocol. Telecommuting Server The DI-206 allows Remote Dial-in Users to dial in and gain access to your LAN. This feature enables users that have workstations with remote access capabilities, e.g., Windows 95, to dial in using an ISDN terminal adapter (TA) to access the network resources without physically being in the office.
  • Page 18 Appendix C, “IP Protocol and Port Numbers,” lists many commonly used IP settings. Appendix D, “Technical Specifications,” a list of specifications about the DI-206 ISDN router. Appendix E, “Country ID Numbers,” lists country ID numbers which must be entered when setting up the ISDN line on the router.

  • Page 19: What This Manual Doesn't Cover

    Regardless of the application, it is important that you follow the steps outlined in Chapter 2, “Installation,” to correctly connect your DI-206 to your LAN. You can then refer to other chapters of the manual depending on your specific installation requirements.

  • Page 20: Additional Installation Requirements

    DI-206 ISDN Remote Router One RS-232 cable. One unshielded twisted-pair (UTP) cable. One frequently asked questions (FAQ) and application notes diskette. One Quick Installation Guide. This User’s Guide. Additional Installation Requirements In addition to the contents of your package, there are other hardware and software requirements you need before you can install and use your router.

  • Page 21: Installation

    DI-206 ISDN Remote Router Installation This chapter outlines how to connect your DI-206 to your LAN and ISDN line. Refer to the diagrams below to identify all of the ports on your device when you make connections. Ordering Your ISDN Line...

  • Page 22: The Di-206 Front Panel

    DI-206 ISDN Remote Router The DI-206 Front Panel Names and descriptions of your router’s front panel LEDs are given below: POWER— Comes on as soon as you connect the router to the power adapter and plug the power adapter into a suitable AC outlet.

  • Page 23: The Di-206 Rear Panel

    DI-206 ISDN Remote Router isolated from the LAN because of excessive collisions (partitioning is a required capability of all Ethernet hubs). PHONE – 1— Lights up when standard phone port 1 is in use. PHONE – 2— Lights up when standard phone port 2 is in use.

  • Page 24: Telephone Features

    Telephone Features Up to two telephones can be attached to the DI-206 router via the Phone 1 and Phone 2 telephone jacks located on the rear of the router. The router enables the attached telephones to have a number of features which may or may not be found on normal telephones and are described below.

  • Page 25: Installation And Initial Configuration

    DI-206 ISDN Remote Router 72, 73, or 74. Press the same number to take the caller off hold and speak from another phone on your telephone network. Call forwarding – If you wish to forward incoming calls to a different telephone, press *77* and then the phone number you wish to forward the call to.

  • Page 26: A Warning On Connection Cables

    Please skip any setting adjustments that do not apply to your configuration needs. For the initial configuration of your DI-206, you must use an RS-232 console connection, either to a computer running serial communications software or to a serial data terminal.

  • Page 27: Step 2 - Connecting The Console To The Router

    No flow control Step 2 - Connecting the Console to the Router A serial cable is included in the DI-206 package. To connect this cable, plug its nine-pin connector into the 9-pin RS-232 Diagnostic port on the router’s rear panel, then connect the other end to the serial port on the rear of your computer or data terminal.

  • Page 28: Step 3 - Connecting An Isdn Line To The Router

    DI-206 ISDN Remote Router Moving Forward to Another Menu To move forward to a sub-menu below the current one, use <tab> or arrow keys to position the cursor on the sub-menu item and press <Enter> to view the selected sub-menu.

  • Page 29: Step 5 - Connecting Ethernet Cables To The Router

    Interface Configuration, ISDN submenu. Step 5 - Connecting Ethernet Cables to the Router Your DI-206 has six ports for connecting 10BASE-T Ethernet devices to form a LAN. The jacks for ports 1 through 5 are wired to let you connect network end nodes (computers, servers, bridges, other routers, etc.) using standard “straight-through”...
  • Page 30 DI-206 ISDN Remote Router Switch Uplink Uplink Crossover (X) Server (or PC) Crossover (X) The figure below shows how to make an Ethernet connection between the router and a network end node. Important Notes on Ethernet Connections Observe the following rules when connecting devices with twisted-pair...

  • Page 31: Step 6 - Powering Up Devices For Initial Configuration

    DI-206 ISDN Remote Router When uplinking two hubs together with a straight-through cable, use an uplink-type jack at one end, and an end-node-type jack at the other. If uplinking more than two hubs together, observe the 5-4-3 rule: no signal, in order to go from one end node to another, must ever pass through more than five twisted-pair cables, four repeaters (that is, hubs), and three uplink cables.

  • Page 32: Step 7 - Initial Configuration Of The Router

    At this point in the installation process you can now power up the console computer, run the terminal emulation software (if necessary), and then power up the DI-206. Step 7 - Initial Configuration of the Router After the console is properly connected and both devices are powered on as described in the preceding sections, you should see the router run through the power on self test (POST).

  • Page 33: Step 7 - Configuring The Lan Port

    DI-206 ISDN Remote Router To log on to the router, use the factory set username and password “Admin” (without the quotes). Please note that the user name and password are case-sensitive. Upon entering the username and password (using the <tab> key to jump to the next field), position the cursor on OK and press <Enter>.
  • Page 34 DI-206 ISDN Remote Router Configuration Utility or Telnet. Regardless, the router can always be configured using a console connected to the RS-232 Console port. To configure the LAN: 1. The LAN port must be enabled in the Interface Configuration sub-menu.
  • Page 35 Choose Exit in the sub-menus to return to the Main Menu. The router can now be accessed via the LAN by Telnet, the Web- based DI-206 Router Configuration Utility (included with the router) and other SNMP management applications. If you have any questions regarding the settings you made or other settings in the submenus, please refer to the next chapter “Configuration and Management.”...

  • Page 36: Step 8 - Plugging In All Devices

    DI-206 ISDN Remote Router Step 8 – Plugging in All Devices You can now plug in and power on all other devices connected to the router. Do not power on the router yet. The router is now able to use the LAN ports.

  • Page 37: Configuration And Management

    DI-206 ISDN Remote Router Configuration and Management After the initial startup (POST) test, the router will prompt you for login and password. This is the opening page of the router’s out-of-band configuration program, called the Console program. The Console program is stored in the Flash memory chips in the router and the settings are written in EEPROM chips in the router.

  • Page 38: Console Program Main Menu

    DI-206 ISDN Remote Router Note that once you are in the Main Menu, if there is no activity for more than 5 minutes, the router will automatically log you out. Your first endeavor should be to increase the ‘timeout’ time by adjusting the appropriate value in the System Information sub-menu.

  • Page 39: System Information

    DI-206 ISDN Remote Router As mentioned earlier, your first endeavor should be to increase the automatic timeout. Enter the System Information window to do this. You will see this screen: System Information This menu contains administrative and system-related information. The above parameters are described as follows: System Description –...

  • Page 40: Interface Configuration

    System MAC Address – The physical address of this router. ISDN Switch Type – The type of ISDN switch used by the telephone company that the DI-206 can communicate with. The DI- 206 currently supports only the DSS1 switch type.

  • Page 41: Lan

    DI-206 ISDN Remote Router Configuration and Management...

  • Page 42: Isdn

    The parameters are described below: Description – This is a user-defined, 32-character identifier used to name the ISDN. Switch Type – This parameter defines the type of ISDN service used. Currently, the DI-206 only supports DSS-1 type ISDN lines. Configuration and Management...
  • Page 43 DI-206 ISDN Remote Router B1 and B2 Channel Usage – This defines whether the ISDN line is a leased line or a normal switched line. If you are not using a leased line connection, set this item to Switch. Country ID – This field needs to contain the country parameter.
  • Page 44 DI-206 ISDN Remote Router Global Reception – When this is enabled, the Phone 1 and Phone 2 jacks will receive all phone calls directed to them by the telephone company’s switch. When disabled, the router will check incoming calls to the Phone 1 and 2 jacks against the telephone numbers specified in the A/B Adapter 1 and 2 fields above.

  • Page 45: Network Configuration

    DI-206 ISDN Remote Router Network Configuration IP protocol configuration and static routes are configured in the Network Configuration sub-menu. This menu is shown below: Select IP Configuration and the following screen opens: Configuration and Management...

  • Page 46: Ip Stack Configuration

    DI-206 ISDN Remote Router IP Stack Configuration The network interface IP address, mask and protocols are specified in the IP Stack Configuration submenus. Below, the screens for both the LAN and ISDN interfaces are shown. Configuration and Management...
  • Page 47 DI-206 ISDN Remote Router The parameters are described below: Configuration and Management...
  • Page 48 DI-206 ISDN Remote Router IP Address – This is the IP address for the router on the network to which this interface is connected. Netmask – This is a 32-bit bit mask that shows how the IP address is to be divided into network, subnet and host parts. The netmask has ones in the bit positions in the 32-bit address which are to be used for the network and subnet parts, and zeros for the host part.
  • Page 49 LAN. The router can also perform DVMRP if this feature is enabled (see Multicast Protocol below), which allows the DI-206 to share multicast information with other routers, enabling IP multicasting over the ISDN port. Configuration and Management...
  • Page 50 DI-206 ISDN Remote Router Multicast Protocol – If this parameter is set to None, the router will only use the Internet Group Management Protocol (IGMP), if IP Multicasting is enabled above. This effectively limits multicast data to the local network. If set to DVMRP (Distance Vector Multicast...

  • Page 51: Ip Static Route

    DI-206 ISDN Remote Router IP Static Route A static route is a permanent entry in the routing table. Static routing provides a means of explicitly defining the next hop router for a particular destination network IP address. Each static route entry also allows for a metric (a.k.a.
  • Page 52 DI-206 ISDN Remote Router Gateway – This is the adjacent next hop router, for which the packets, arriving to this router with this destination IP address, will be forwarded. Hops – This is an associated RIP metric that may have its value set between 1 and 15, inclusive.

  • Page 53: Ip Networking

    The Simple Network Management Protocol (SNMP), defined in STD 15, RFC 1157, is a protocol governing the management and the monitoring of IP network devices and their functions. The DI-206 supports the use of SNMP to acknowledge communication between management stations and itself. Basically, the DI-206, when connected...

  • Page 54: Snmp Community Configuration

    SNMP agent, a software process that responds to queries using SNMP to provide status and statistics about the router. Following is a description of how to configure the DI-206 for SNMP management. From the Main Menu, select SNMP Agent Configuration. This will bring you to the SNMP Agent Configuration menu, shown above.
  • Page 55 DI-206 ISDN Remote Router The parameters are described below: SNMP Community String – This community string is a user- defined identifying name used to group together some arbitrary set of SNMP application entities managed by the network manager. Access Right – This element of the set {Read Only, Read/Write} is called the SNMP access mode.

  • Page 56: Snmp Trap Manager Configuration

    The parameters are described below: IP Address – Enter the IP address of the host who will act as an SNMP Management Station. The DI-206 router will send SNMP traps to these addresses. SNMP Community String – The community string is a user- defined identifying name used to group together some arbitrary set of SNMP application entities managed by the network manager.

  • Page 57: Snmp Authenticated Trap

    DI-206 ISDN Remote Router State – This validates or invalidates the use of the SNMP Community String, by setting the use of the string to Valid or Invalid. Note that setting the string to Invalid is the same as removing the string, however, the string remains so as to be validated again at an appropriate time.

  • Page 58: Remote Access Configuration

    The B-Channels can also carry voice and fax calls, which are routed to the telephone jacks located on the rear of the router. Please note, however, that the DI-206 can maintain only two connections at a time Configuration and Management...

  • Page 59: Remote Operation Overview

    Remote Operation Overview The DI-206 is very flexible and can be configured for a variety of remote connections. Since configuring the router can be quite complex - depending on the number and type of remote connection(s) you wish to implement –...

  • Page 60: Remote Network Connections

    (in this document however, we will assume the remote device is a router). In almost all cases, a Remote Network Profile needs to be set up for each network that will connect to the DI-206 via the ISDN lines. The Remote Network Profiles are necessary for the router to identify and tailor the connection to the remote network’s...
  • Page 61 DI-206 will not have any record of the web page’s IP address. If no default next hop router is defined, the request will be dropped and the user will get a ‘Destination Unreachable’...
  • Page 62 DI-206 ISDN Remote Router In the case where there is no match for the destination IP address in the routing table, and no default next hop router is defined, the packet will be dropped and no action will be taken.
  • Page 63 DI-206 ISDN Remote Router Dial Configuration You can configure the two ISDN interfaces on your DI-206 to dial-out only when a packet is forwarded to that interface, and hang up after all data has been transferred and the link is idle. This can be used to lower the cost of an unpopular link or used as a backup link to your ISP.
  • Page 64 DI-206 ISDN Remote Router The items are described as follows: IP Address – This is the first IP Address that will be assigned to a dial-in user. Range – This is the number of IP Addresses that can be assigned.
  • Page 65 Dial-In User Profile The Dial-In User Profile is used to configure the DI-206 for single users (for example a person working at home) to dial in to the router and gain access to the network. At least one User Profile must be configured for...
  • Page 66 DI-206 ISDN Remote Router settings). Please note that WAN connections to computers on other networks must be defined in the Remote Network Profile submenu. Up to eight users can be set up to dial in to the router. However, more dial-in users can be accommodated by using a Radius server as described in the Radius Configuration section of this manual.
  • Page 67 DI-206 ISDN Remote Router The parameters in the above window are described as follows: Name – The maximum length is 64 characters. This username is for password challenges (authentication). The user dialing in must supply this username in order to be allowed access to the router.
  • Page 68 DI-206 ISDN Remote Router Default IP – This is the IP address that will be assigned to the dial- in user when the IP Address Supply setting below is set to Default. Assigning an IP address to the remote computer ensures that the IP address does not clash with other IP addresses on your network.
  • Page 69 Remote Network Profile The Remote Network Profile is used to configure the router for ISDN connections to other networks. In practice, the DI-206 will either dial- out to or receive incoming calls from another router, the ‘gateway’ to the other network.
  • Page 70 DI-206 will dial-[Out] to the other network, or a connection can be established [Both] ways. When this is set to In, the DI-206 will only establish a connection with the other network by receiving calls on the ISDN port specified in the Interface field below.
  • Page 71 DI-206 ISDN Remote Router calls will be subject to the Name, Password and Phone Number fields in the Outgoing section below. When set to Both, the dial in and dial out conditions described above will both be observed. Interface – ISDN Link 1 [ISDN L1] or ISDN Link 2 [ISDN L2].
  • Page 72 DI-206 ISDN Remote Router the gateway IP setting accordingly). And also make sure that the Remote IP Address in the Remote Networks Profile is set to 0.0.0.0. Note that only one ISDN circuit should be connected to the Internet, and only one ISDN circuit (the same one) should be the default gateway.
  • Page 73 DI-206 ISDN Remote Router password challenges (authentication) which are automatically handled by the router when dialing out. The DI-206 will use PAP and CHAP (whichever works) to make the connection. Password – This is the password associated with the above Name field.

  • Page 74: Dhcp Configuration

    This can be a great help for network administration since many administrative tasks such as keeping track of each computer’s IP address are handled by the router. The DI-206 can implement DHCP in one of the two ways shown below:...
  • Page 75 DI-206 ISDN Remote Router DHCP Server Configuration When acting as a DHCP server, the DI-206 will manage many of the IP network parameters. The DI-206 will never assign a broadcast or network IP addresses to hosts, even if such an address is included in the specified range.

  • Page 76: Dynamic Ip Pool

    DI-206 ISDN Remote Router Dynamic IP Pool The Dynamic IP Pool screen shown below contains the parameters that the router can set on the hosts. Please note that the Dynamic IP Pool cannot be enabled when the DHCP Agent feature is enabled.
  • Page 77 DI-206 ISDN Remote Router The parameters are described below: IP Address – This is the base (starting) address for the IP pool of IP addresses to be assigned. Range – This is the range of contiguous, IP addresses, above the base IP Address above.

  • Page 78: Static Ip Pool

    DI-206 ISDN Remote Router Lease Time – This specifies the number of hours a client can lease an IP address, from the dynamically allocated IP pool. The maximum value is 65535 and a value of 0 means the lease is permanent.
  • Page 79 DI-206 ISDN Remote Router Select an entry from the screen above and press <Enter>. The following screen appears: Configuration and Management...

  • Page 80: Dhcp Relay Agent

    DHCP Relay Agent The DHCP Relay Agent feature allows the DI-206 to act as a go- between for a remote DHCP server assigning IP addresses to local clients. This can be useful if you wish to have all IP addresses in your company, including those in branch offices, assigned from a DHCP server centrally located at your headquarters, for example.

  • Page 81: Filter Configuration

    DHCP Server IP Address – This is the IP address of the remote DHCP server. When a local computer powers up and sends a DHCP request for an IP address, the DI-206 will forward the request to the address specified here.

  • Page 82: Configuring A Filter Set

    DI-206 ISDN Remote Router Configuring a Filter Set Under the Advanced Functions menu, select Filter Configuration. You will see the following screen: The three sub-menus are described as follows: Filter State of Interface – This is used to choose the default, routing decisions for packets, not meeting the criteria for specific filters.
  • Page 83 DI-206 ISDN Remote Router Alternatively, you can set up filters that allow certain types of IP packets to enter the LAN. Filter State of Interface The Filter State of Interface sub-menu lets you disable a filter, or, for packets that have not met the corresponding criteria, to forward or drop packets.

  • Page 84: Layer 2 Filter

    DI-206 ISDN Remote Router Layer 2 Filter The Layer 2 Filter sub-menu contains a protocol independent (data- link layer) filter. Foreknowledge of the specific protocol used on the interface (LAN or WANs) is needed to make effective use of this filter.
  • Page 85 DI-206 ISDN Remote Router The parameters of a filter are described below: Name – This is a 12 character (maximum), alphanumeric, user- defined name, used to identify the filter. Direction – This defines the direction of the frame relative to the Interface parameter below.
  • Page 86 DI-206 ISDN Remote Router Offset – This defines the reference byte for the Length parameter (described below). The Offset is the number of bytes (octets) from the beginning of the first byte of the frame header, immediately after the preamble. The range of the offset parameter is from 0 to 255 octets.
  • Page 87 DI-206 ISDN Remote Router Select an entry above and then press <Enter>. The following screen appears: Configuration and Management...
  • Page 88 DI-206 ISDN Remote Router The IP Filter parameters are described below: Name – This is a 12 character (maximum), alphanumeric, user- defined name, used to identify the filter. Direction – This defines the direction of the packet relative to the Interface parameter below.

  • Page 89: Multiple Home Configuration

    DI-206 ISDN Remote Router Src Netmask – This mask is bit-wise AND’d with the source IP address and bit-wise AND’d with the IP address of the incoming interface. The two results are then compared. Dst IP – This is the destination address in the IP header of the packet.
  • Page 90 DI-206 ISDN Remote Router Multiple Home can be demonstrated by this example: A company has 625 users (computers) all connected to one physical network using Ethernet. However, the company only has one Class C IP network address, 202.100.160.0. This network address will only support 254 users.
  • Page 91 DI-206 ISDN Remote Router In this router, multiple home configurations only apply to the LAN interface. The parameters are described below: IP Address – This is a network IP address of a separate IP network on the LAN. Routing Protocol – This is the same as in the Network Configuration screen section.

  • Page 92: Static Arp

    DI-206 ISDN Remote Router Static ARP This special function is intended to speed up the process of finding a host's Ethernet (MAC) address from its network address, and provides a special condition – any other host acting as an impostor by using the same IP address as the legitimate host, will be ignored by this router.
  • Page 93 DI-206 ISDN Remote Router The parameters are described as follows: IP Address – This is the IP address of the host you wish to define a static ARP for. MAC Address – This is the physical address of the host that is the authorized owner of the IP address.

  • Page 94: Nat Configuration

    DI-206 ISDN Remote Router NAT Configuration Network Address Translation (NAT) is a routing protocol that allows your network to become a private network that is isolated from, yet connected to the Internet. It does this by changing the IP address of...
  • Page 95 DI-206 ISDN Remote Router NAT can work in conjunction with DHCP. Thus, if both are enabled and properly configured, the DHCP server in the DI-206 will assign local IP addresses to computers on your network. How NAT Works In the most common NAT configuration, your network uses local IP addresses that are not valid on the Internet.
  • Page 96 DI-206 ISDN Remote Router Single Global IP Address 176.220.22.1 ISDN Port Router Translator Port Local IP 192.168.100.1 192.168.100.5 192.168.100.4 192.168.100.3 192.168.100.2 Please note that in the above diagram, the Gateway IP address settings for the local PC’s needs to be set to 192.168.100.1, the LAN IP address of the router.
  • Page 97 DI-206 ISDN Remote Router In the Outgoing Data Packet above, the Source IP address is the IP address that is translated by NAT. The Destination IP Address is the IP address of a computer outside the private network, on the Internet for example.
  • Page 98 DI-206 ISDN Remote Router example IP addresses listed in the table below and the network diagram shown on page 84. Global IP Addresses Local IP Addresses (for use with NAT) (assigned to computers on the local network) 200.100.50.1 192.168.100.2 200.100.50.2 192.168.100.3...
  • Page 99 DI-206 ISDN Remote Router request is made. Since there are only 5 global IP addresses in the example above, there can only be 5 mappings at any one time. In other words, much like static NAT, only 5 local machines can access the Internet at any one time.
  • Page 100 DI-206 ISDN Remote Router Configure NAT/NAPT The first screen shows the complete NAT table that is defined by the network manager: Configuration and Management...
  • Page 101 DI-206 ISDN Remote Router For any NAT entry, you must configure two different screens. The first one is accessible by positioning the cursor over the name field and hitting <Enter> (in the window shown above, this corresponds to the field ‘Branch1’). After configuring the NAT options in the Name field, you must save the changes, EXIT, and position the cursor over the NAT IP Pool to configure variables there.
  • Page 102 DI-206 ISDN Remote Router The parameters are described as follows: Name – This is a 12 character, alphanumeric, user-defined name, used to identify the network address translation. Global Interface – This is the interface corresponding to the Global IP and Range parameters, in the NAT table, to form unique IP address[es], known to the outside (regional or Internet) routers, on this interface.
  • Page 103 DI-206 ISDN Remote Router servers, etc. where static IP addresses are essential for operation. Dynamic NAT – Maps one global IP address to one local IP address. Global IP addresses will be dynamically reassigned to different local IP addresses if not currently being used. This allows a larger number of users to use a small number of IP addresses.

  • Page 104: Dynamic Nat

    DI-206 ISDN Remote Router Dynamic NAT This screen (below) is how the NAT IP Pool appears, if Dynamic NAT was chosen for the Translation Mode parameter. Each entry, in this configuration, can be used to map multiple, contiguous global addresses and local addresses to each other.
  • Page 105 DI-206 ISDN Remote Router that will be recognized by the interface in the Local Interface parameter. Range – This is the range of contiguous local addresses above (and including) the base Local IP. State – This toggles enable/disable for this NAT entry.

  • Page 106: Static Nat

    DI-206 ISDN Remote Router Global IP – This is a single, globally unique IP Address of the global interface (the interface to which it is assigned, in this case, one of the ISDN interfaces) that is valid on the Internet.
  • Page 107 DI-206 ISDN Remote Router Local IP – This is a single, local IP Address that is not valid on the Internet. State – Enables or disables this entry. Static NAPT This screen (below) is how the NAT IP Pool appears, if Static NAPT was chosen for the Translation Mode parameter.
  • Page 108 DI-206 ISDN Remote Router Port – This is a destination port number used by TCP and UDP to de-multiplex incoming IP packets. In the above example, incoming packets with the global destination IP Address (211.11.22.3) and global destination TCP/UDP port (21) will be translated to a packet with the local destination IP Address (1.1.1.5)
  • Page 109 DI-206 ISDN Remote Router In the above window, position the cursor on any of the numbered name fields and press <Enter>. This will take you to the NAPT configuration screen for special applications shown below. Configuration and Management...
  • Page 110 DI-206 ISDN Remote Router The fields in the above window are described as follows: Protocol – UDP or TCP. This field designates the type of packets that will be acted on. Start Port – Some applications can only send data over a certain range of port numbers.
  • Page 111 DI-206 ISDN Remote Router Diablo server, for example, is used to trigger the exemption process for the incoming data. In the example for the game Diablo shown in the above screen, if a packet is sent out on the TCP port number 6112 (a request by a local...

  • Page 112: Telnet/Discovery Enable

    Windows-based configuration software called RouteMan. DNS Configuration The DI-206 router has a built in recursive DNS server. The maximum amount of memory that will be used by the router’s Domain Name Server is 64Kb which averages out to be about 800 entries. In other...
  • Page 113 DI-206 ISDN Remote Router words, up to 800 domain names and their associated IP Addresses can be stored, which can significantly speed up access to those domains. The routers DNS table will age out about every 24 hours, ensuring that the most frequently accessed domains consistently benefit from the improved access times provided by using the routers own DNS.

  • Page 114: Host Table

    DNS Configuration submenu above (in this case, “dlink.com”) to produce “ctsnow.dlink.com”. The mapping in the example of “ctsnow.dlink.com” to the IP Address of 11.1.1.3 is only valid for computers which set the DI-206 router as their DNS server. Configuration and...
  • Page 115 DI-206 ISDN Remote Router Items are described as follows: IP – The IP address for the host. Host Name – The host name used by the host. State – Enables or disables entry. Configuration and Management...

  • Page 116: Radius Configuration

    DI-206 ISDN Remote Router Radius Configuration Radius is an authentication protocol where passwords are stored on a Radius server. Radius allows large numbers of passwords to be stored in a centralized location. Before instituting Radius, please setup and install a Radius server on the LAN.

  • Page 117: Multi-Link Ppp Configuration

    MLPPP. Typically MLPPP is used to combine the speed of two ISDN BRI B-Channels to get 128Kbps of virtual capacity. Before implementing MLPPP on the DI-206, please ensure that your ISP or the device to which you are connecting supports, and is configured for MLPPP.
  • Page 118 DI-206 ISDN Remote Router connection when the BOD High Threshold is exceeded for the Add Bandwidth Delay period. Bandwidth can also be subtracted when ISDN throughput falls below the BOD Low Threshold and Subtract Bandwidth Delay parameters. Thus, BOD economizes MLPPP by maintaining only the bandwidth needed.
  • Page 119 DI-206 ISDN Remote Router Items in the Multi-Link PPP Configuration window are described as follows: Bandwidth on Demand – Enables or disables BOD. When enabled, BOD will manage the implementation of MLPPP using the parameters defined in this window. BOD Criteria – Either TX, RX or TX+RX, where TX is Transmit and RX is Receive.
  • Page 120 DI-206 ISDN Remote Router Subtract Bandwidth Delay (sec) – (0 to 300) The amount of time in seconds the router will wait and sample the BOD Criteria before subtracting bandwidth once the throughput falls below the BOD Low Threshold. This prevents bandwidth from being unnecessarily subtracted due to temporary lulls in traffic.

  • Page 121: Admin Configuration

    DI-206 ISDN Remote Router Admin Configuration This feature allows you to define two names and two passwords, respectively, for logging in to the router for configuration and management, and is shown below: Please note any changes made here as they are necessary for logging into the console program.

  • Page 122: System Status

    DI-206 ISDN Remote Router The System Maintenance sub-menu appears as follows: System Status The System Status submenu displays key information about the router and appears as follows: Configuration and Management...

  • Page 123: Statistics

    DI-206 ISDN Remote Router Statistics Under the Statistics submenu, counter tables are displayed for LAN, ISDN B1, and ISDN B2: Configuration and Management...
  • Page 124 DI-206 ISDN Remote Router Counter This feature displays some of the counters contained in MIBII and the proprietary MIB. The table is updated every 5 seconds, and the counter table can be reset by performing a system reset on the router.
  • Page 125 DI-206 ISDN Remote Router Tx Packets – The total number of valid packets transmitted by the router since the last reset. Tx Bytes – The total number of bytes transmitted by the router. Tx Discard Packets – The number of packets dropped by the router.
  • Page 126 DI-206 ISDN Remote Router retransmit the packet. If a collision occurs 16 times in a row, the transmission will be aborted and be logged by this counter. An aborted packet shows extremely heavy utilization of the network. Tx Underrun Packets – Runt packets. The number of packets transmitted by the router that are less than the allowed 64 octets minimum length.
  • Page 127 DI-206 ISDN Remote Router Rx MPA Packets – Missed Packet. This is a count of packets intended for the router, but at the time, the router could not receive the packet (usually due to the temporary lack of receive buffers).
  • Page 128 DI-206 ISDN Remote Router Tx Error Packets – The number of invalid packets transmitted by the router. This hardware counter shows the sum of Collisions, Abort and Underrun packets. Tx Underrun Packets – Runt packets. This counter shows the number of packets transmitted by the router that are less than the allowed 64 octets minimum length.

  • Page 129: Runtime Tables

    DI-206 ISDN Remote Router Rx CRC Packets – The number of packets received that failed the CRC checksum test. Rx Overrun Packets – The number of packets received that exceed the 1518 octet maximum length imposed on Ethernet packets. Overrun packets are generated by some proprietary software applications.

  • Page 130: Ip Routing Table

    DI-206 ISDN Remote Router IP Routing Table The IP Routing Table gives you a snapshot of the IP routing table. Table entries will expire after the Age value in the table counts down to zero seconds (except for entries for the router itself which have an age value of zero but will never expire).
  • Page 131 DI-206 ISDN Remote Router IP Address – This is the destination, network IP address from an incoming packet. Netmask – This mask is received from RIP exchanges and internal calculations, as the router learns. Gateway – This is the next-hop router for which the packet, with destination IP Address and qualifying Netmask, will be forwarded.

  • Page 132: Arp Table

    DI-206 ISDN Remote Router ARP Table The ARP Table maps the IP address with a MAC address. IP Address – This is the network layer IP address. MAC Address – This is the data link MAC address. PPP Table The PPP Table allows you to display the interface and link status for either ISDN Link 1 or ISDN Link 2 from the PPP Status sub-menu.

  • Page 133: Log And Trace

    Log and Trace This feature files events and errors that occurred and allows individual packets to be captured in a buffer. These items are to help D-Link technical support personnel identify problems that may be affecting your router. If problems occur with your router, D-Link technical support personnel will guide you through the use of these features.
  • Page 134 DI-206 ISDN Remote Router Configuration and Management...

  • Page 135: Log Configuration

    DI-206 ISDN Remote Router Event/Error Log Log Configuration Configuration and Management...
  • Page 136 DI-206 ISDN Remote Router This option allows you to enable or disable the Event/Error log and begin recording events. View Log File This displays the Event/Error Log file shown below: Configuration and Management...
  • Page 137 DI-206 ISDN Remote Router The parameters are described as follows: Code – A special code for categorizing events. Some codes include: Cold Start Link Change Tx Abort Rx Abort Connect/Disconnect NAT Request DHCP Request Port – The interface on which an event occurs.

  • Page 138: Trace Buffer

    DI-206 ISDN Remote Router Data – Data that helps technical support personnel evaluate the event. Trace Buffer This feature captures packets in a buffer to help D-Link technical support personnel identify problems with your router. Trace Buffer Configuration Configuration and...
  • Page 139 DI-206 ISDN Remote Router The parameters are described as follows: Interface – Select LAN, ISDN B1, or ISDN B2. Direction – Select In, Out, or Both. State – Enables or disables the Trace buffer feature View Trace Buffer Displays the header of packets captured in the buffer.

  • Page 140: Packet Triggered Last Call

    DI-206 ISDN Remote Router The contents are described as follows: Interface – This is the interface from which the packets were captured. Time – In clock ticks. The time the packet was captured. Data – The contents of the header of the packet.

  • Page 141: Diagnostic

    DI-206 ISDN Remote Router Diagnostic This feature tests the connection between the router and connected peripherals on a given interface. Please note that if Telnet is used to access the router, only the Ping Test diagnostic is available from the menu below.

  • Page 142: Connection Test

    DI-206 ISDN Remote Router Connection Test This feature tests a dial-out ISDN connection. Configuration and Management...
  • Page 143 DI-206 ISDN Remote Router The parameters are described as follows: Interface – The ISDN B-channel to be tested. Phone Number – The phone number that will be dialed by the ISDN Interface. Please ensure that a modem answers the phone on the other end.

  • Page 144: Ping Test

    DI-206 ISDN Remote Router device. In order for this test to work, a Remote Network Profile must be created for the connection. Hang up – Press <Enter> to hang up after Dialing Out. Ping Test This test makes sure there is an IP network connection to a particular IP address.
  • Page 145 DI-206 ISDN Remote Router Count – The number of pings (packets) that will be sent. A value of 0 will cause pings to be sent continuously. Delay (10ms) – The amount of time in 10 millisecond intervals between each ping in the Count.
  • Page 146 DI-206 ISDN Remote Router Phone Number – Enter your own phone number here to establish a connection between your ISDN B1 and B2 channels. Packet Length – [1 to 1500 bytes]. This field allows you to define different sized data packets to test the ISDN line.
  • Page 147 DI-206 ISDN Remote Router System ISDN This test diagnoses the ISDN ports. It can only be run if the ISDN port is disabled in the Interface Configuration submenu. Configuration and Management...

  • Page 148: Software Update

    DI-206 ISDN Remote Router Software Update New routing software can be downloaded from a TFTP server. If you do not have a TFTP server on your LAN, you can use the included Router Configuration Utility to upgrade the software. This...

  • Page 149: System Restart

    Perform a System Restart after configuring these settings begins the software update procedure. System Restart The system restart function enables you to reset the DI-206 without powering off. Some setting changes require a system restart in order for them to take effect.

  • Page 150: Factory Reset

    DI-206 ISDN Remote Router A system restart will not affect the router’s settings, but will clear all tables including the routing table and all SNMP counters and tables. It is also used to initiate a software update. Factory Reset Performing a factory reset erases all settings and tables. All configuration changes ever made to the router will be deleted.

  • Page 151: System Settings Backup/Restore

    Software Update submenu. The files defined here can be used as a backup for all the router settings and can be used to configure another DI-206 with exactly the same settings, or as a backup before you make major changes to the configuration.
  • Page 152 DI-206 ISDN Remote Router Backup System Settings Configuration and Management...
  • Page 153 DI-206 ISDN Remote Router Items in the window are described below: Remote IP Address – This is the IP address of the TFTP server on which you wish to store the settings file. TFTP Time Interval – The time between requests to occupy TFTP server time.
  • Page 154 DI-206 ISDN Remote Router Remote IP Address – This is the IP address of the TFTP server on which you wish to restore the system settings file. TFTP Time Interval – The time between requests to occupy TFTP server time. If the router doesn’t receive a response (ACK) from the TFTP server within the time interval defined here, it will assume the request has been dropped and send another.

  • Page 155: Prom System Configuration

    DI-206 ISDN Remote Router PROM System Configuration The PROM program is run before the normal console (runtime) configuration program in the router’s Flash Memory. Thus, the PROM System Configuration can be used if there are problems with the router’s console program.

  • Page 156: System Configuration

    DI-206 ISDN Remote Router System Configuration The parameters are described as follows: Hardware Revision – This is the version ID of hardware used in this router. Boot PROM Firmware Version – This is the version ID of firmware used in this router.

  • Page 157: Tcp/Ip Parameters Configuration

    DI-206 ISDN Remote Router TCP/IP Parameters Configuration The parameters are described as follows: Interface – The LAN interface must use Ethernet/Fast Ethernet and is displayed here. This setting cannot be adjusted. IP Address – This is the router’s IP Address for the LAN interface.

  • Page 158: System Reset

    DI-206 ISDN Remote Router System Reset The system reset function enables you to reset the DI-206 without powering off. Some setting changes require a system reset in order for them to take effect. A system reset will not affect the router’s settings, but will clear all tables including the routing table and all SNMP counters and tables.
  • Page 159 DI-206 ISDN Remote Router Items listed in the above menu are described as follows: Software Update Control – This toggles disable and enable. Software Update Mode – This specifies downloading the image file from a Network server on the local LAN.
  • Page 160 DI-206 ISDN Remote Router Boot File Name – This specifies a complete path and filename on the TFTP server. If you choose to use a configuration file, this setting must show the path and filename to the configuration file. If you are not using a configuration file, this must show the path and filename to the software update image file.

  • Page 161: Eeprom Factory Reset

    DI-206 ISDN Remote Router EEPROM Factory Reset Performing a factory reset erases all settings and tables. All configuration changes ever made to the router will be deleted. The router will be set to the factory defaults it was shipped with and will no longer have an IP address.

  • Page 162: Using Telnet

    Telnet. Telnet Configuration In order to use telnet, the DI-206 router must first be configured using a console connected to the RS-232 Diagnostic port. Depending on the placement of the management station using telnet, the initial...

  • Page 163: Using Telnet Via Isdn

    Interface Configuration, ISDN submenu section of this manual. System Timeout When you are connected to your DI-206 via Telnet, there is a system timeout (in the System Information submenu), adjustable to a maximum of 90 minutes. If you are logged onto the device and leave it inactive for this timeout period, the router will automatically disconnect you.

  • Page 164: Using Radius Authentication

    Configuring the DI-206 for RADIUS Authentication To configure the DI-206 to use the RADIUS server set up in the previous section, go to the Main Menu in the console program and choose Advanced Functions and then RADIUS Configuration.
  • Page 165 Port – The port number for the Radius server. The standard port number specified by RFC 1700 is 1812 (shown above). Key – This is a shared secret used to identify the DI-206 as a valid Radius client. The Key password should be stored in the client file in the RADIUS server’s /etc/raddb directory.

  • Page 166: Adding Users To The Radius Database

    The Client Name field in the file gives the IP address of the DI-206, and the Key field should be the same as the Key field in the Radius Configuration submenu. After a RADIUS server has been configured, the DI-206 will use it to authenticate all users instead of checking it’s internal Dial-Up User...

  • Page 167: Appendixa - Troubleshooting

    None of the LEDs are on when you power up the router Check the power cord and the power supply and make sure it is properly connected to your DI-206. If the error persists you may have a hardware problem. In this case you should contact technical support.

  • Page 168: Problems With The Isdn Line

    DI-206 ISDN Remote Router Problems With the ISDN Line If you are having problems making a connection through the ISDN line, try performing a Loopback Test (in the console program choose System Maintenance, Diagnostic, Loopback Test). If the loopback test succeeds then your physical connection to your phone company is ok and the problem probably lies in your ISDN settings (located in the console program under Interface Configuration, ISDN).
  • Page 169 DI-206 ISDN Remote Router 6. Check to make sure the wires in the cable are attached to the appropriate pins in the RJ-45 connector Appendix A - Troubleshooting...

  • Page 170: Appendixb - Ip Concepts

    DI-206 ISDN Remote Router Appendix B - IP Concepts This appendix describes some basic IP concepts, the TCP/IP addressing scheme and show how to assign IP Addresses. When setting up the router, you must make sure all ports to be utilized on the router have valid IP addresses.

  • Page 171: Ip Network Classes

    DI-206 ISDN Remote Router Networks attached to the Internet are assigned class types that determine the maximum number of possible hosts per network. The previous figure illustrates how the net and host portions of the IP address differ among the three classes. Class A is assigned to networks that have more than 65,535 hosts;...

  • Page 172: Subnet Mask

    DI-206 ISDN Remote Router The value(s) in the host portion of a physical device's IP address can be in the range of 0 through 255 as long as this portion is not all-0 or all-255. Values outside the range of 0 to 255 can never appear in an IP address (0 to 255 is the full range of integer values that can be expressed with eight bits).
  • Page 173 DI-206 ISDN Remote Router IP Class Subnet Mask Class A 255.0.0.0 Class B 255.255.0.0 Class C 255.255.255.0 Subnet mask settings other than those listed above add significance to the interpretation of bits in the IP address. The bits of the subnet mask correspond directly to the bits of the IP address.

  • Page 174: Appendixc - Ip Protocol And Port Numbers

    DI-206 ISDN Remote Router Appendix C – IP Protocol and Port Numbers Common Internet service protocols and IP port numbers. IP Protocol Numbers Protocol # Protocol Name Description ICMP Internet Control Message [RFC792] IGMP Internet Group Management [RFC1112] Transmission Control [RFC793]...
  • Page 175 DI-206 ISDN Remote Router SNMP Trap Appendix C – IP Protocol and Port Numbers...

  • Page 176: Appendixd - Technical Specifications

    DI-206 ISDN Remote Router Appendix D - Technical Specifications General Ports Number of Ports: 6 Ethernet ports RJ-45 2 Analog phone ports RJ-11 1 Console port DB-9 RS-232 DCE LED Readout Power Test ISDN Link, B1, B2 Ethernet Col, Link/Act - Uplink, 1,2,3,4,5,...
  • Page 177 DI-206 ISDN Remote Router 1 ISDN BRI port: 64Kbps B channel x 2 16Kbps D channel x 1 ISDN network Compatibility Europe and Asia: Supports DGT switches, and Siemens EWSD switches DSS1, EuroISDN and Taiwan Data Compression Hi/fn LZS (Stac)

  • Page 178: Appendixe - Country Id Numbers

    DI-206 ISDN Remote Router Appendix E – Country ID Numbers Please refer to the list below for country ID numbers used to configure the ISDN interface of the router. 00 : International 30 : Thailand 01 : Taiwan 31 : Turkey...

  • Page 179: Appendixf - Configuration File

    DI-206 ISDN Remote Router Appendix F – Configuration File The router can be configured when performing a Software Update through a configuration file. The configuration file can hold many settings for the router including IP Addresses for all ports, path to the boot server, and various port settings.

  • Page 180: Configuration File Example

    DI-206 ISDN Remote Router disable is the parameter you set. Configuration File Example # The system configuration file for D-Link DI-206 Router # DI-206 runtime image file name (software update path and file name) di206-image d:\project\di206\runtime\image\206run\206run.hdr # sysname (string name)

  • Page 181: Index

    DI-206 ISDN Remote Router Index Code.........125, 127 Configuration........25 A/B Adapter........1 Configuration File......166 Access Right........43 Configuration File Example .....167 Admin[istration] Configuration..109 Connection Test ......130 Advanced Functions......45 connections........46 Age ..........119 Console........14, 15 ARP request........49 Console program........25 Auth Type........
  • Page 182 DI-206 ISDN Remote Router DNS Configuration......100 DNS Domain Name......102 ICMP..........77 DNS IP..........66 Idle Time..........59 Domain Name........66 IGMP..........38 Dynamic Host Configuration Protocol4 image file..........146 Dynamic IP Pool....... 64 impostor ..........80 Dynamic NAPT........ 93 Initial Configuration.....20, 26 Dynamic NAT ........92 installation ........175...
  • Page 183 DI-206 ISDN Remote Router NAT IP Pool .....89, 92, 93, 94, 95 Netmask........36, 65 Lan............3 Network Configuration......33 LAN ..3, 5, 7, 9, 29, 34, 42, 79, 156 network management .......175 LAN Counter Table ......113 next hop router ........49 LAN Port ..........
  • Page 184 DI-206 ISDN Remote Router Remote Access Configuration... 46 Static NAT ........94 remote connections......46 Statistics ..........111 Remote Dial-in Users...... 1, 5 STP..........175 Remote Network Connections..48 stub network........86 Remote Network Profile ..... 48, 49 SUA....See Single User Account Remote Network Profiles....47 Subnet Mask........160...
  • Page 185 DI-206 ISDN Remote Router Transparent Bridging..See Bridging virtual circuit........47, 59 visible computer ........91 UNNUMBER........36 voice...........46 Update Software from Configuration File..........148 User Profile ........54 WINS IP ..........66 Username........... 47 UTP..........175 Index...
  • Page 186 2180 Winston Park Drive, Oakville, Ontario L6H 5W1 Canada TEL: 1-905-829-5033 FAX: 1-905-829-5223 BBS: 1-965-279-8732 FREE CALL: 1-800-354-6522 URL: www.dlink.ca FTP: ftp.dlinknet.com E-MAIL: techsup@dlink.ca CHILE D-LINK SOUTH AMERICA Isidora Goyenechea #2934 of.702, Las Condes, Santiago, Chile TEL: 56-2-232-3185 FAX: 56-2-2320923 URL: www.dlink.cl E-MAIL: ccasassu@dlink.cl, tsilva@dlink.cl DENMARK D-LINK DENMARK Naverland 2, DK-2600 Glostrup, Copenhagen, Denmark TEL:45-43-969040 FAX:45-43-424347 URL: www.dlink.dk...
  • Page 187 2F, No. 119 Pao-Chung Road, Hsin-Tien, Taipei, Taiwan , R.O.C. TEL: 886-2-2910-2626 FAX: 886-2-2910-1515 URL: www.dlinktw.com.tw E-MAIL: dssqa@tsc.dlinktw.com.tw U.K. D-LINK EUROPE D-Link House, 6 Garland Road, Stanmore, London HA7 1DP U.K. TEL: 44-20-8235-5555 FAX: 44-20-8235-5500 BBS: 44-20-8235-5511 URL: www.dlink.co.uk E-MAIL: info@dlink.co.uk U.S.A D-LINK U.S.A.

  • Page 188: Registration Card

    8. What category best describes your company? oAerospace oEngineering oEducation oFinance oHospital oLegal oInsurance/Real Estate oManufacturing oRetail/Chainstore/Wholesale oGovernment oTransportation/Utilities/Communication oVAR oSystem house/company oOther________________________________ 9. Would you recommend your D-Link product to a friend? oYes oNo oDon't know yet 10.Your comments on this product? __________________________________________________________________________________________...

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