DI-206 ISDN Router User’s Guide Rev. 04 (July 2000) 6DI206….
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Table of Contents INTRODUCTION ................................................................................................1 Product Features ............................................................................................................................1 Applications for your DI-206 .........................................................................................................3 Internet Access.........................................................................................
DHCP Configuration .................................................................................................................................38 Filter Configuration ...................................................................................................................................42 Multiple Home Configuration....................................................................................................................47 Static ARP..................................................
APPENDIX C – IP PROTOCOL AND PORT NUMBERS .........................................98 IP Protocol Numbers ....................................................................................................................98 IP Port Numbers...........................................................................................................................98 APPENDIX D - TECHNICAL SPECIFICATIONS.....................................................99 APPENDIX E – COUNTRY ID NUMBERS ....................
DI-206 ISDN Remote Router Introduction Congratulations on your purchase of a D-Link DI-206 series remote access router with integrated Ethernet hub and ISDN T/A. No larger than an ordinary modem, your router offers inexpensive yet complete telecommunications and internetworking solutions for your home or branch office. It is ideal for everything from Internet browsing to receiving calls from Remote Dial-in Users and making connections to other LANs via Remote Nodes.
DI-206 ISDN Remote Router ISDN Leased Line If the router is set up for an ISDN leased line, it can automatically initialize the leased-line connection each time it is powered up. Standard Phone Jacks The router is equipped with two standard phone jacks for connecting telephones, fax machines, or modems. This allows the ISDN line to be used for voice as well as data calls.
DI-206 ISDN Remote Router Data Compression The DI-206 incorporates Stac data compression and CCP (Compression Control Protocol). Networking Compatibility The DI-206 is compatible with remote access products from other companies such as Ascend, Cisco, and 3Com. Furthermore, they support Microsoft Windows 95 and Windows NT remote access capability.
DI-206 ISDN Remote Router Chapter One, “Introduction,” describes many of the technologies implemented in the DI-206 as well as product features. Chapter Two, “Installation,” is designed as a step-by-step guide to installing the router. Chapter Three, “Configuration and Management,” provides detailed explanations for the console program that is used to setup and configure the router.
DI-206 ISDN Remote Router ♦ Quick Start Guide. ♦ Support disk containing RouteMan, a Windows-based configuration program. Packing List Before you proceed further, check all items you received with your DI-206 against this list to make sure nothing is missing. The complete package should include: ♦ One DI-206 ISDN router. ♦ One power adapter. ♦ One RS-232 cable. ♦ One unshielded twisted-pair (UTP) cable. ♦ One frequently asked questions (FAQ) and application notes diskette. ♦ One Quick Installation Guide.
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 If you do not have an ISDN line installed already, we suggest that you order it from your telephone company as soon as possible to avoid the long waiting period common when ordering a new line. Use the information in this section to place the order.
DI-206 ISDN Remote Router ETHERNET – COL— Shines yellow when a collision occurs on the LAN, that is, when two devices have attempted to transmit at the same time. ETHERNET – Uplink and 1 through 5— Each of these indicators shines green when a connection to an Ethernet device is detected.
DI-206 ISDN Remote Router 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. Additional features which must actually be configured are described in the Interface Configuration – ISDN sub-menu section of this manual.
DI-206 ISDN Remote Router 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. After the router has been successfully installed and the initial configuration is complete, you can continue to modify settings through the console, or you can change configuration settings through a remote Telnet connection or through a web browser.
DI-206 ISDN Remote Router Using the Console The Console Program is the interface that you will be using to configure your DI206. Several operations that you should be familiar with before you attempt to modify the configuration of your router are listed below: ♦ Moving the Cursor Within a menu, use and arrow keys to navigate through different information fields.
DI-206 ISDN Remote Router another 10Mbps Ethernet or dual-speed hub using a straight-through cable, or an end node using a cross-wired cable.
DI-206 ISDN Remote Router This is the maximum signal path in twisted-pair Ethernet. Also be sure never to allow a signal loop to form. Note that you can connect an end node through the Uplink jack, but to do so you must use a cross-wired cable or cable converter. Step 6 - Powering Up Devices for Initial Configuration Plug in the included 18V DC, 750 mA power adapter into the power jack on the router’s rear panel.
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 key to jump to the next field), position the cursor on OK and press .
DI-206 ISDN Remote Router 1. The LAN port must be enabled in the Interface Configuration sub-menu. ♦ Choose Interface Configuration, LAN. ♦ Position the cursor over the State item and press . The State will change from Disable to Enable. ♦ Position the cursor on the SAVE option at the bottom of the screen and press to save the new setting. ♦ Choose Exit in the sub-menus to return to the Main Menu. 2. Enable IP Networking ♦ Choose Network Configuration, IP Configuration.
DI-206 ISDN Remote Router 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.” 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.
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. It is the most basic level for configuring and managing the router and the network to which it is connected.
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 – This is a non-changeable, short description of the product. • System Object ID – This is the enterprise-specific MIB Object ID indicating this type of router.
DI-206 ISDN Remote Router • System Name – Give the router a descriptive name for identification purposes. • System Location – Enter the geographic location of the router. • Console/Telnet Display Timeout in Minutes(0..90) – This is a security measure to automatically logoff from the console menu after a given idle time. Enter a timeout time between 0 and 90 minutes. Zero specifies no timeout. • System MAC Address – The physical address of this router.
DI-206 ISDN Remote Router LAN The parameters are described below: • Description – This is a user-defined, 32-character identifier used to name the LAN. • Operation Mode – The LAN port is 10BASE-T only. • State – This is a toggle, to Disable or Enable the LAN interface. ISDN The parameters are described below: • Description – This is a user-defined, 32-character identifier used to name the ISDN.
DI-206 ISDN Remote Router • Switch Type – This parameter defines the type of ISDN service used. Currently, the DI-206 only supports DSS-1 type ISDN lines. • 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. Without this information, the router cannot establish a connection.
DI-206 ISDN Remote Router the same protocol as defined here. The None setting may be used when you do not wish dial-in users or networks to identify themselves or be subject to security. • Call Bumping – This setting only takes effect when both B channels are connected and using multi-link PPP.
DI-206 ISDN Remote Router IP Stack Configuration The network interface IP address, mask and protocols are specified in the IP Stack Configuration submenus.
DI-206 ISDN Remote Router The parameters are described below: • 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.
DI-206 ISDN Remote Router • RIP Routing Mode – This parameter allows the router to specify the extent to which it partakes in the RIP on this port. The options are described below: 1. None – The router will not participate in any RIP exchange with adjacent routers. 2. Listen – The router will incorporate routing information from adjacent routers, but will not send its own routing table. 3.
DI-206 ISDN Remote Router the packets to be dropped before Bandwidth on Demand has a chance to reestablish the WAN connection. 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. hop count) to be specified.
DI-206 ISDN Remote Router The first entry assumes that ISDN1 has a connection to the Internet and defines the default next hop router. If you use this router to connect to the Internet it is very important that you create an entry here that defines the default next hop router as your ISP. This configuration is also commonly used when RIP exchanges with other Internet routers (on ISDN1) are disabled. The second entry shows how to configure static routes when there is another router on the LAN.
DI-206 ISDN Remote Router From the Main Menu, select SNMP Agent Configuration. This will bring you to the SNMP Agent Configuration menu, shown above. SNMP Community Configuration Select and enter the SNMP Community Configuration sub-menu. You will see the following configuration screen: 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.
DI-206 ISDN Remote Router • Status – This validates or invalidates the use SNMP Community String, by setting the string to Valid or Invalid. Note that setting the use of the string to Invalid is the same as removing the string, however, the string remains so as to be validated at an appropriate time. SNMP Trap Manager Configuration From the SNMP Agent Configuration menu, select and enter the SNMP Trap Manager sub-menu.
DI-206 ISDN Remote Router Advanced Functions The Advanced Functions menu contains most of the more complex configuration settings and is shown below: Remote Access Configuration The Remote Access Configuration menu is used to set up the router for dial-in and dial-out connections over the ISDN line. An ISDN line has a D channel for establishing connections and two B (Bearer) channels, which transmit and receive the actual signals, whether voice or data.
DI-206 ISDN Remote Router be able to use network resources as if he were connected locally. When the user dials into the DI-206, the call comes into the D-channel and after answering the phone, the DI-206: 1. 2. 3. 4. 5. 6. Identifies the Username and Password using the authentication protocol defined in the Interface Configuration, ISDN submenu. The dial-in user is not prompted for this information, but must enter it into his dialing software before dialing.
DI-206 ISDN Remote Router 1. Check its routing table to try to identify where this packet should go. It looks for two variables in the routing table, Gateway address and Interface. There are four possible results: I. In the case where the destination resides in the same IP network on the LAN, the routing engine never acts on the packet and it is sent directly to the destination through the built-in hub. II.
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. This feature is commonly called “Dial on Demand”. ISDN interfaces can also be configured here to receive calls from dial in users and other networks, called “Remote Access”.
DI-206 ISDN Remote Router • 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. In the window shown above, dial-in users will be assigned the IP Addresses 170.100.200.1 or 170.100.200.2 (only two are necessary since the router used in the examples has only two ISDN ports). ISDN Link 1 This submenu contains a number of settings (shown below) which allow you to configure the router to dial out.
DI-206 ISDN Remote Router Configuration section of this manual. Please note that when a Radius server is being used, the Dial-in User Profiles will be disabled. The Dial-In User Profile submenu appears below: Select a dial-in user from the screen above. The parameters in the above window are described as follows: • Name – The maximum length is 64 characters. This username is for password challenges (authentication).
DI-206 ISDN Remote Router calling from the telephone number defined here, otherwise the call will not be accepted. This function is disabled if the field is left blank. • 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.
DI-206 ISDN Remote Router Select the desired entry from the screen above: The parameters in the above window are described as follows: • Remote Name – Name for the remote network that the DI-206 is being set up to connect with. • Direction – Dial-[In], dial-[Out], or [Both]. This field defines whether the router on the other network will dial-[In] to the DI-206 to establish a connection, the DI206 will dial-[Out] to the other network, or a connection can be established [Both] ways.
DI-206 ISDN Remote Router When this is set to Out, the router will only make calls on the ISDN interface specified in the Interface field below. Also, the outgoing 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].
DI-206 ISDN Remote Router the router will disconnect the initial call and call back to the phone number that you provide. Note that this field will be valid only if the Direction setting above is Both. • Outgoing • Name – The maximum length is 64 characters. Spaces and punctuation are not usually accepted. This username is for 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.
DI-206 ISDN Remote Router on and come onto the network. 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: DHCP Server Configuration When acting as a DHCP server, the DI-206 will manage many of the IP network parameters.
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. In the above example, the IP addresses assigned host computers as they come onto the network would be 202.93.47.1, 202.93.47.2 … 202.93.47.100.
DI-206 ISDN Remote Router Static IP Pool The Static IP Pool configuration functions in much the same way as the Dynamic IP Pool configuration. The only difference is that a particular IP address can be assigned to a particular host. This is used for hosts such as servers that need to have static IP addresses to function properly or to make them accessible to remote users. The host is identified by the MAC address of its NIC, which must be entered on this screen.
DI-206 ISDN Remote Router All other parameters (Netmask, Gateway, DNS IP, WINS IP, State, & Domain Name) are identical to those in Dynamic IP Pool screen in the previous section. 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.
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. • Layer 2 Filter – This is a data-link layer (protocol independent) filter.
DI-206 ISDN Remote Router Each decision on handling packets is described below: 1. Disable – Will not apply a filter. 2. Forward – This allows the routing of a packet, even though it has not met the criteria of the corresponding filter. 3. Drop – This drops (doesn’t allow routing for) a packet that has not met the criteria for the corresponding filter. Layer 2 Filter The Layer 2 Filter sub-menu contains a protocol independent (data-link layer) filter.
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. • State – This is used to choose the routing decision applied to the frame. The three decisions are described: 1. forward –This allows the routing of the frame, if it has met the criteria of the corresponding filter. 2.
DI-206 ISDN Remote Router from your network. It is necessary to have good knowledge of IP protocol before effectively configuring this filter. Select an entry above and then press . The following screen appears: 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.
DI-206 ISDN Remote Router 2. drop – This drops (doesn’t allow routing for) a specific packet that has met the criteria of the corresponding filter. 3. disable – This does not apply the IP filter. • Interface – This applies the filter to a specific interface, LAN or one of the ISDN interfaces. • Protocol Type – This is a protocol identifier, as assigned by the Internet Assigned Numbers Authority (IANA). The values of this identifier are described in RFC-1700.
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. To solve the shortage of IP address problem and to plan for future growth, the company applies for and receives two more Class C IP network addresses, 203.101.161.0 and 204.102.162.0.
DI-206 ISDN Remote Router 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. Keep in mind that these exchanges are made with adjacent routers on the LAN, if present. • IP Multicasting – This enables/disables IP multicasting on the IP network you are defining.
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. • State – This toggles enable and disable. 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.
DI-206 ISDN Remote Router Network Address Port Translation (NAPT) is a subset of NAT where many local IP addresses and their TCP/UDP port numbers are translated to a single global IP address and it’s TCP/UDP port number. In this document, the term NAT will refer to both NAT and NAPT unless otherwise stated. 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.
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. And the Data portion of the packet is the information payload borne by the packet, for instance a request to view a web page. The router logs the changes made to the IP header in its NAT table.
DI-206 ISDN Remote Router Please note that in the above table there are 9 users on the local network using 5 global IP addresses to access the Internet. When a packet on the local network arrives at the router and needs to be sent to the Internet, NAT will change the source IP address (for example 192.168.100.2) to a global address (200.100.50.1, for example).
DI-206 ISDN Remote Router Configure NAT/NAPT The first screen shows the complete NAT table that is defined by the network manager: 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 (in the window shown above, this corresponds to the field ‘Branch1’).
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.
DI-206 ISDN Remote Router Dynamic NAPT - One to one mapping of UDP/TCP port numbers. The NAPT map table will age. This option allows many hosts to use a single, globally unique IP address, and thus will only be used on outbound packets. • State – Enables or disables this NAT configuration. NAT IP Pool Configuration Screen Now you must select, enter, and configure the NAT IP Pool from the NAT Configuration sub-menu, shown below.
DI-206 ISDN Remote Router Dynamic NAPT This screen (below) is how the NAT IP Pool appears, if Dynamic NAPT was chosen for the Translation Mode parameter. Each entry, in this configuration, can be used to map a single global address and multiple, contiguous local addresses to each other. All of the parameters are the same as in Dynamic NAT, except the Global IP is a solitary, global address.
DI-206 ISDN Remote Router The parameters are described as follows: • Global IP – This is a single, global IP Address that is valid on the Internet, or on the same subnet of the global interface. • 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.
DI-206 ISDN Remote Router application over the Internet and you are using NAPT, you may need to exempt certain port numbers from the NAPT port translation process. Please refer to the user guide for the program to find out whether it transmits and receives data only through specified IP port numbers. In order for these programs to work with NAPT, the IP port numbers required by these applications must be entered in the Configure NAPT for Special APs screen shown below.
DI-206 ISDN Remote Router NAPT port translation process. This field defines the beginning range of the port numbers to be exempted from the NAPT port translation process. • End Port – This field defines the last port number in the range of numbers excluded from the NAPT process (see Start Port above). • Connection Type – Outgoing Control or Incoming Data. The user must initially run the special application and send a request to the application server on the Internet.
DI-206 ISDN Remote Router 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 words, up to 800 domain names and their associated IP Addresses can be stored, which can significantly speed up access to those domains.
DI-206 ISDN Remote Router Host Table The host table allows the router to recognize host names on the network. Up to eight host names can be entered in the table. Your network servers, especially your mail server should be defined here. Leftover places in the table can be assigned to individual hosts to speed up routing. In the example below, the host name “ctsnow” is combined with the domain name defined in the DNS Configuration submenu above (in this case, “dlink.com”) to produce “ctsnow.dlink.com”.
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. Items in the above submenu are described as follows: • RADIUS State – Enables or disables Radius. When enabled, all settings in the Dial-in User Profile are disabled.
DI-206 ISDN Remote Router of data packets across multiple channels. Although MLPPP can be implemented on any WAN device, it was the rapid emergence of ISDN BRI as a cost efficient higher bandwidth alternative to modems which has driven the evolution and acceptance of MLPPP. Typically MLPPP is used to combine the speed of two ISDN BRI BChannels to get 128Kbps of virtual capacity.
DI-206 ISDN Remote Router • BOD High Threshold (%) – (0 to 100) The throughput value as a percentage of total bandwidth which will cause the next ISDN port having Multi-Link PPP enabled to dial up and add bandwidth to the connection. This value, however, must be constantly exceeded for the time designated in the Add Bandwidth Delay field before the next ISDN port dials out.
DI-206 ISDN Remote Router Please note any changes made here as they are necessary for logging into the console program. System Maintenance Your console program includes many useful tools for maintaining your device. These tools include updates on system status, upgrades to the system software, analysis, diagnostic tools and more. This section will describe how to use these tools in greater detail.
DI-206 ISDN Remote Router Statistics Under the Statistics submenu, counter tables are displayed for LAN, ISDN B1, and ISDN B2: 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. Note that performing a system reset clears ALL tables in the router, including the routing table.
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. • 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 Collision Packets – The number of packets sent out of the router that collided on the line.
DI-206 ISDN Remote Router • Rx FAE Packets – Frame Alignment Error. The number of packets received that does not end on a byte boundary and the CRC does not match. • 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. • Rx MPA Packets – Missed Packet.
DI-206 ISDN Remote Router • Rx Bytes – The total number of bytes contained in packets received by the router. • Rx Unknown Packets – The number of packets received by the router that were of an unsupported protocol. • Rx Discard Packets – The number of packets dropped by the router. • Rx Error Packets – The number of invalid packets received by the router. This hardware counter shows the sum of NOA, Abort, CRC, Overrun, CD Lost, Framing and Parity error packets. • Rx NOA Packets – Non-Octet Alignment.
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). • 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.
DI-206 ISDN Remote Router • Age – This is the time-to-live (TTL) value. 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. • Interface – The desired interface. • Link Down –The present link status.
DI-206 ISDN Remote Router 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.
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: The parameters are described as follows: • Code – A special code for categorizing events.
DI-206 ISDN Remote Router • Port – The interface on which an event occurs. • Time – Tick-times denoting when events occurred. • 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 The parameters are described as follows: • Interface – Select LAN, ISDN B1, or ISDN B2.
DI-206 ISDN Remote Router • 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. 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.
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. Connection Test This feature tests a dial-out ISDN connection. 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.
DI-206 ISDN Remote Router • Connection Test – Position the cursor over this item and press to begin the test. The router will dial the phone number defined above, try to establish a valid link with the answering ISDN device and hang up. This test can only be performed if the Interface is disabled in the Interface Configuration, ISDN submenu. • Dial Out – Press to begin the test. The router will dial the phone number above and negotiate a connection with the answering device.
DI-206 ISDN Remote Router Press on the screen above. • 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. • Start Test - Press or to begin the test. System LAN The System LAN test is used to diagnose the LAN port. It can only be run if the LAN port is disabled in the Interface Configuration submenu.
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. 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.
DI-206 ISDN Remote Router This is the same Software Update configuration information contained in the Software Update section in the “PROM System Configuration” chapter. The parameters are described in that section. 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.
DI-206 ISDN Remote Router 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.
DI-206 ISDN Remote Router Backup System Settings 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. 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.
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. • File Name – Specifies the complete path and filename on the TFTP server for the settings file.
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.
DI-206 ISDN Remote Router • 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. • MAC Address – This is the physical address for this 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.
DI-206 ISDN Remote Router Software Update The Software Update option is used to change the software in the flash memory of the router. This is the runtime software that is configured by the console and is used to setup the router and is described in full in the preceding chapter. The runtime software should only be updated if you are encountering problems with your current runtime software or you are certain your runtime software is lacking functionality contained in a more recent version.
DI-206 ISDN Remote Router 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. • Last Boot Server IP Address – This shows the last boot server used to download an image file. This is for reference only. • Last IP Address – This shows the last IP address used for the LAN interface. Again, this is for reference only. The LAN port must have an IP address in order to access the TFTP server via the LAN network.
DI-206 ISDN Remote Router Executing a bootload can also begin the Software Update procedure, if enabled.
DI-206 ISDN Remote Router Using Telnet The DI-206 router can be configured and managed using telnet. Telnet accesses the same built-in configuration program as the RS-232 Diagnostic port console connection. As such, all settings that can be adjusted through the console can also be configured using 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.
DI-206 ISDN Remote Router 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.
DI-206 ISDN Remote Router Using RADIUS Authentication In addition to the dial-in user list, which can hold up to eight users, this model also supports an external authentication server which may provide password storage and usage accounting for thousands of users. Installing a RADIUS Server To use RADIUS authentication, you will need to have a UNIX or Windows NTbased machine on your network to act as a radiusd server, as well as a copy of the radiusd server program itself.
DI-206 ISDN Remote Router ♦ Type – Refers to the type of external password protocol. Currently, only Radius is supported. ♦ Server IP Address – This is the IP Address of your UNIX or NT-based Radius server. ♦ 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.
DI-206 ISDN Remote Router Appendix A - Troubleshooting This chapter contains some problems you may run into when using your router. After each problem description, we have provided some instructions to help you diagnose and solve the problem. Some Common Problems With the DI-206 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.
DI-206 ISDN Remote Router 3. Verify with your network administrator that the IP address and the IP subnet mask configured in the Network Configuration, IP Configuration, IP Stack Configuration, LAN submenu of the console program are valid for that LAN. 4. Check the physical Ethernet cable, and make sure the connections on the router and the hub or station are secure. 5.
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. Even if you will not use the ISDN or WAN ports, you should, at the very least, make sure the LAN port is assigned a valid IP address.
DI-206 ISDN Remote Router Note: All network addresses outside of these ranges (Class D and E) are either reserved or set aside for experimental networks or multicasting. When an IP address's host portion contains only zero(s), the address identifies a network and not a host. No physical device may be given such an address. The network portion must start with a value from 1 to 126 or from 128 to 223.
DI-206 ISDN Remote Router Appendix C – IP Protocol and Port Numbers Common Internet service protocols and IP port numbers.
DI-206 ISDN Remote Router Appendix D - Technical Specifications General Ports Number of Ports: 6 Ethernet ports 2 Analog phone ports 1 Console port RJ-45 RJ-11 DB-9 RS-232 DCE LED Readout Power Test ISDN Ethernet Phone Link, B1, B2 Col, Link/Act - Uplink, 1,2,3,4,5, 1,2 LAN Standard LAN Protocol Data Transfer Rates Network Cables 10BASE-T: 2-pair UTP Cat.3, 4, 5 (100m max. length) IEEE 802.
DI-206 ISDN Remote Router Physical & Environmental DC Input: External DC power adapter Power Consumption Ventilation Operating Temperature Storage Temperature Humidity Dimensions 18V 750mA unregulated or regulated 8.5W max.
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 01 : Taiwan 02 : Germany 03 : Sweden 04 : France 05 : Switzerland 06 : Holland 07 : Finland 08 : Denmark 09 : U.K.
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. The configuration file is very useful if you wish to update your software and keep all or most of your settings the same. The configuration file should be saved with the extension .
DI-206 ISDN Remote Router routing-type 2 # routing operating mode (0:None, 1:Listen, 2:Talk, 3:Both) operating-mode 0 # ip routing stat (enable/disable) ip-stat enable 103
DI-206 ISDN Remote Router Index A A/B Adapter .................................................. 1 Access Right................................................ 27 Admin[istration] Configuration ................... 66 Advanced Functions .................................... 29 Age .............................................................. 72 ARP request................................................. 31 Auth Type.................................................... 30 automatic timeout ..................
DI-206 ISDN Remote Router Idle Time ..................................................... 37 IGMP........................................................... 24 image file..................................................... 87 impostor....................................................... 49 Initial Configuration .............................. 12, 16 installation ................................................. 108 Interface ................................................
DI-206 ISDN Remote Router Remote Network Profiles ............................ 30 Remote networks ......................................... 30 Remote Node............................................. 1, 2 Remote Operation Overview ....................... 29 Retry Count ................................................. 33 Retry Time................................................... 33 Router Configuration Utility.................. 13, 80 Routing Mode..............................................
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