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Modify the Network Management Configuration File (Cont'd.) Step 7: Configure DTC Cards When you press the [Config Card] key at the DTC Configuration screen, NMMGR will display the corresponding card configuration screen for the specified card in the DTC. Figure 3-6 shows an example of a Card Configuration screen for DTC 72MX for asynchronous connect card. (Screens vary slightly for DTC 16iX/16MX/16RX, DTC 16, and DTC 48). The corresponding screen for a DTC 16iX/16MX/16RX is called a Port Configuration Screen since DTC 16iX/16MX/16RX has port connectors built directly onto the backplane and does not have connector cards. Use this screen to configure the ports in the specified card. On this screen, logical device (ldev) numbers and profile names are associated with individual ports on the card.Figure 3-6. DTC Card Configuration Screen 1. Verify that the DTC name and card number displayed are correct. 2. (Optional) Enter the port group type. The valid types are D for direct connect and M for modem connect. The default is D. 3. Press the [Tab] key to move the cursor to the first port on the card. Enter an ldev number for this port in the "Ldev" field. Ldev numbers used for each port on the DTC must be unique. For example, you can use ldev number 100 for port 0 of the first card, and increment the ldev number by 1 for each consecutive port. So a DTC 72MX with 3 asynchronous cards (a total of 72 ports) would be assigned ldev numbers 100 through 123 for the 24 ports on the first card, 124 through 147 for the ports on the second card and 148 through 171 for the ports on the third card. For the second DTC, you would start with an ldev number greater than 171. _________________________________________________________________ NOTE Pressing the [Show Ldevs] key will display a list of all the ldev numbers configured in NMMGR in addition to the DTC name, card type, and profile name. _________________________________________________________________ 4. Enter the profile name for each port in the "Profile Name" field. A profile for the port defines the characteristics of the device to be connected to that port. For direct terminals ports, the suggested profile to use is TR10D96. For direct printer ports, the suggested profile to use is PR18D96 (or PR22D24 for HP printers with status checking). For a UPS connected to a DTC port, the suggested profile is UP10D12. Table 4-1 through Table 4-7 in chapter 4 list terminal, printer and UPS profiles supplied by the system. You may also create your own profiles. Refer to chapter 4, "Terminal and Printer Profiles," for more information on profiles. 5. Repeat above two steps for every port in this card. _________________________________________________________________ NOTE To reduce typing ldev numbers and profiles on the screen, you can use the [Fill Card] key to automatically assign ldev numbers and profile names. First, enter an ldev number (and profile name if you do not wish to use the default profile name) for port 0, then press [Fill Card]; the system will automatically assign incremental ldev numbers to each subsequent port on the screen and copy the specified profile for each port. The system will automatically save the data it has entered. The [Clear Display] key on your keyboard will clear the part of your screen that is below the cursor position. You may use this key and the [Fill Card] key to quickly modify a screen. _________________________________________________________________ 6. Press the [Save Data] function key to save the data on the screen. _________________________________________________________________ CAUTION Before you exit this screen, make sure you press [Save Data] if you want to keep the data on the screen; otherwise your screen input will be lost. This occurs even if you temporarily exit the screen to read [Help] information. _________________________________________________________________ 7. To configure another card in the DTC, use the cursor keys to move to the field on the screen: "To configure a different card, enter its number,...". Enter the card number of the card you want to configure. 8. Press the [Config Card] function key. The corresponding screen for the card number entered in the last step will be displayed. 9. If all the cards have been configured, press the [Prior Screen] function key to return to the DTC Configuration Selection screen to select another DTC to configure. Otherwise, if every DTC has been configured, press the [Validate DTS/LINK] function key to validate the configuration file.
NOTE NMMGR allows the configuration of up to 4649 terminal I/O devices. The largest valid ldev number allowed is 4679. Fields
This screen is used to permanently associate ldev numbers and profile names with individual ports on the direct connect card. DTC name Display only. Card number Display only. Port Group Type The valid typeare D for direct connect and M for (Optional) modem connect. The default is D. Ldev The logical device (ldev) number to be associated with the port. Each ldev number must be unique; it may not be duplicated by any other device configured on the system. Profile Name The terminal or printer profile name to be associated with the port. The features defined by the profile must correspond to the actual operating features of the port and its attached device. To configure a The card that you want to configure next. Use this different card, parameter in combination with the [Config Card] key enter its number; to select and move to a different card in the same then press Config DTC. For example, after card 0 is configured, enter Card a 1 in this field and press the [Config Card] key to move to the configuration screen for card 1. Step 8: Configure X.25 Connections NMMGR displays the DTC X.25 Card Configuration screen (see Figure 3-7 ) if you press the [Config Card] key at the DTC Configuration screen (or at a different card configuration screen) with the card number of a DTC/X.25 Network Access card in the Config Card field. From this screen, you move to the screens that let you configure DTC values for X.25 system-to-system and PAD connections.Figure 3-7. DTC X.25 Card Configuration Screen 1. Choose the screen that you want to move to. To create a new card configuration, go to the screen that lets you configure level 1 and 2 parameters first. (If you are modifying an existing card configuration, you may choose to move to one of the other choices listed on the screen.) 2. Press the function key that corresponds to the screen that you want to move to. Fields This screen is used to select and move to the lower level DTC/X.25 Card Configuration screens. The function keys available for selection and the corresponding lower level screens are shown below: Go to Lvl 1&2 Takes you to the DTC X.25 Card Configuration - Level 1 and 2 screen. Use this screen to configure level 1 and 2 network parameters. Most of the information you enter on this screen will be on the subscription form for the packet switched network you are connecting to. You must enter level 1 and 2 parameters for all DTC/X.25 Network Access cards whether they support X.25 system-to-system connections, PAD connections, or both. Go to Level 3 Takes youto the DTC X.25 Card Configuration - Level 3 & Miscellaneous screen. Use this screen to configure level 3 network values and to specify a maximum number of PAD connections (if the card is to support PAD connections). Most of the information you enter on this screen will be on the subscription form for the packet switched network you are connecting to. You must enter level 3 parameters for all DTC/X.25 Network Access cards whether they support X.25 system-to-system connections, PAD connections, or both. Go to SysLUG Takes youto the DTC X.25 Card Configuration - Sys-to-Sys LUGs screen. Use this screen to configure the X.25 link name, the maximum number of switched virtual circuits, and local user group information the DTC will need in order to support X.25 iX System Access (NS system-to-system links). Information entered on this screen must not conflict with information entered during NS link configuration. (Configure information on this screen only if you are configuring X.25 system-to-system connections.) Go to PAD Takes you to the DTC X.25 Card Configuration - Nailed PAD Connections screen. Use this screen to configure information the DTC will need in order to support terminals and printers with permanently assigned ldev numbers (nailed devices) over PAD connections. (Configure information on this screen only if you are configuring nailed PAD connections.) Go to Security Takes you to the DTC X.25 Card Configuration-PAD Security screen. Use this screen to configure security if you want to allow or disallow PAD access from specific X.25 calling addresses. (Configure information on this screen only if you are configuring PAD and want to implement PAD security.) Step 9: Configure X.25 Level 1 and 2 NMMGR displays the DTC X.25 Card Configuration - Level 1 and 2 screen (see Figure 3-8 ) if you press the [Go To Lvl 1&2] key at the DTC X.25 Card Configuration screen. On this screen, you enter level 1 and 2 values for the X.25 card being configured. You must configure these values for both system-to-system access and for PAD access. You can also reach this screen by typing the following path at the Command line and pressing the [ENTER] key: @DTS.DTC.SELECT.dtcname.X25CARDn.LEVEL12Figure 3-8. DTC X.25 Card Configuration - Level 1 and 2 1. Verify that the cursor is in the Line speed field. Enter the line speed for the DTC/X.25 Network Access card as specified by your network subscription. 2. Verify that the cursor is in the Packet Switched Network Name field. Enter the name of the network you subscribe to. 3. Verify that the cursor is in the CCITT X.25 Standard field. Enter the X.25 standard you are using. 4. Verify that the cursor is in the Frame size (N1) field. Enter the frame size as specified by your network subscription. 5. Verify that the cursor is in the Retransmission timer (T1) field. Enter the value for the retransmission timer as specified by your network subscription. 6. If you are using the 1984 standard, verify that the cursor is in the Timer T3 field. Enter the value for this timer as specified by your network subscription. If you are using the 1980 standard, skip this field (press [TAB] to move to the next field). 7. Verify that the cursor is in the Retransmission count (N2) field. Enter the value for the retransmission count as specified by your network subscription. 8. Verify that the cursor is in the Unacknowledged frame number (K) field. Enter the value for the number of frames that can be transferred without acknowledgment as specified by your network subscription. 9. Verify that the cursor is in the Modulo field. Enter the modulo value as specified by your network subscription. 10. When you have entered all level 1 and 2 values as specified by your subscription, press the [Save Data] key to save the configuration. 11. Press the [Go To Level 3] key to move to the DTC X.25 Card Configuration - Level 3 & Miscellaneous screen. Fields You use this screen to configure X.25 level 1 and 2 parameters for the DTC/X.25 Network Access card being configured. You must define these parameters for both X.25 system-to-system and PAD connections. Ranges for configurable values are listed on the screen. DTC Name Display only. Card Number Display only. Line speed The line speed for the connection. Supported speeds for a card installed in a DTC16 are 1200, 2400, 4800, 9600, or 19200 bps. Supported speeds for a card installed in a DTC48 or DTC72 are 1200, 2400, 4800, 9600, 19200, 48000, 56000, or 64000 bps. Packet Switched The name of the network you subscribe to. Network Name Possible network names include: DATAPAC, PSS, DATEX-P, TRANSPAC, TYMNET, TELENET, DDN, HP PPN, ITAPAC, LUXPAC, DATANET1, DCS, DCE, X25PDN. (The name must be entered exactly as shown here.) If two X.25 systems are directly connected (for example, if you have a cable connecting one DTC X.25 card directly to another DTC X.25 card) one of the two systems must be configured as DCE and the other as DTE. To configure a card as DCE, enter DCE in the Packet Switched Network Name field. To configure a card as DTE, enter X25PDN in the Packet Switched Network Name field. (Entering DCE configures the X.25 card as a DCE at levels 2 and 3 of X.25. At level 1 it remains DTE.) CCITT X.25 Standard Version of the CCITT X.25 standard you are using, either 1980 or 1984. Frame size (N1) The framesize, in bytes, as listed on your subscription. Note that many network subscription forms give this value in bits, not bytes. In such cases, divide the number of bits by 8 to obtain the correct number of bytes to enter in this field. Range: 23 to 4103 bytes. Retransmission timer Time, in milliseconds, the transmitting (T1) node waits before retransmitting an unacknowledged frame. The default of 3000 milliseconds is adequate for most installations. Range: 1000 to 12000 milliseconds. Timer (T3) This value is required only if you are using the 1984 CCITT standard. Specifies the time a link will remain idle before it is automatically reset. The value of T3 must be greater than T1. The default is 20 seconds. Range: 0 to 1000 seconds. Retransmission count The number of times a frame is retransmitted (N2) before an error is indicated. The default is 20 times. Range: 0 to 255. Unacknowledged frame The maximum number of frames which can be number (K) transmitted without acknowledgment from the network. Range: 1 to 7. Modulo The counting cycle for the send frame sequence number. Range: 8 or 128. Step 10: Configure X.25 Level 3 and Miscellaneous NMMGR displays the DTC X.25 Card Configuration - Level 3 & Miscellaneous screen (see Figure 3-9 ) if you press the [Go To Level 3] key at the DTC X.25 Card Configuration screen or the DTC X.25 Card Configuration - Level 1 and 2 screen. On this screen, you configure level 3 values for this X.25 card. You also configure an X.25 card address and the maximum number of PAD connections that will be allowed if PAD is supported. You must configure the level 3 values for both system-to-system access and for PAD access. You can also reach this screen by typing the following path at the Command line and pressing the [ENTER] key: @DTS.DTC.SELECT.dtcname.X25CARDn.LEVEL3Figure 3-9. DTC X.25 Card Configuration - Level 3 & Miscellaneous 1. Verify that the cursor is in the X.25 card address field. Enter the address that will be appended to outgoing PAD calls. If no address should be sent in call request packets, leave this field blank. 2. Verify that the cursor is in the Maximum number of PAD connections field. Enter the maximum number of PAD connections that will be allowed through this card. Remember that this number must include both nailed and non-nailed PAD connections. If PAD will not be configured, leave this field blank. 3. Use the [TAB] key to move to the Logical Channel Identifier (LCI) Range fields. Enter high and low values for the permanent virtual circuits (PVCs) or switched virtual circuits (SVCs) you are configuring per your network subscription. At lease one pair must be configured. Leave the fields blank for any PVC or SVC types that are not configured. 4. Use the [TAB] key to move to the Default Flow Control fields. Enter In and Out values according to your network subscription. 5. Use the [TAB] key to move to the Flow control negotiation field. Enter Y to enable or N to disable according to your subscription. 6. Use the [TAB] key to move to the Throughput class negotiation field. Enter Y to enable or N to disable according to your subscription. 7. Use the [TAB] key to move to the Use of D-bit field. Enter Y to enable or N to disable according to your subscription. 8. Use the [TAB] key to move to the Extended packet sequence numbering field. Enter Y to enable or N to disable according to your subscription. 9. When you have entered all level 3 values as required by your subscription, press the [Save Data] key. 10. Press the [Go To SysLUG] key to move to the DTC X.25 Card Configuration - Sys-to-Sys LUGs screen. Fields You use this screen to configure X.25 level 3 and miscellaneous parameters for the DTC/X.25 Network Access card being configured. You must define the level 3 parameters for both X.25 system-to-system and PAD connections. DTC Name Display only. Card Number Display only. X.25 card address A calling address appended to outgoing calls. Used for programmatic access to PAD devices. Also used for network loopback test. For most network applications, this is the same as the address used for X.25 system-to-system communications. Note that with certain networks (such as Transpac, in France) the called address is removed from incoming call packets and the calling address is added to outgoing call packets by the network. For these networks, enter only the subaddress in this field, not the full X.25 address. Maximum number of Number of PAD connections that you will allow at PAD connections any given time through the card being configured. The maximum number of connections that can be allowed are: For DTC16 the maximum is 32, for DTC48 the maximum is 256 and for DTC72MX the maximum is 156. Note that this number specifies the limit for all PAD calls through this card, including both nailed and non-nailed connections. In determining how many PAD connections to allow, keep in mind that PAD connections use SVCs, out of the pool of available SVCs. The same pool of SVCs is used for system-to-system connections if system-to-system connections are also configured for this card. You will need to balance your PAD support requirements with you system-to-system requirements to find the optimum configuration for your network. PVCs Low and high values for permanent virtual circuits as listed on your X.25 subscription. One-way incoming Low and high values for one-way incoming switched SVCs virtual circuits as listed on your X.25 subscription. Two-way SVCs Low and high values for two-way (incoming and outgoing) switched virtual circuits as listed on your X.25 subscription. One-way outgoing Low and high values for one-way outgoing switched SVCs virtual circuits as listed on your X.25 subscription. Packet size Size of packet, in bytes, for incoming and outgoing data as listed on your X.25 subscription. Note that for X.25 cards on which you intend to configure PAD support, the subscribed and configured packet size must be 128, 256, or 512 bytes. Window size Window size for incoming and outgoing data as listed on your X.25 subscription. Throughput class Throughput class values for incoming and outgoing data. Values depend upon the speed of the link, as follows: Table 3-5. -------------------------------------- | | | | Throughput | Line Speed | | class | | | | | -------------------------------------- | | | | 7 | 1200 | | | | -------------------------------------- | | | | 8 | 2400 | | | | -------------------------------------- | | | | 9 | 4800 | | | | -------------------------------------- | | | | 10 | 9600 | | | | -------------------------------------- | | | | 11 | 19200 | | | | -------------------------------------- | | | | 12 | 48000 | | | | -------------------------------------- Flow control Specifies whether or not flow control negotiation negotiation is enabled. When flow control negotiation is enabled, both packet size and window size are negotiable. Enter Y if your subscription allows flow control negotiation and you wish to enable it. Otherwise enter N. Use of D-bit Specifies whether or not delivery confirmation is enabled. Enter Y if your subscription allows delivery confirmation and you wish to enable it. Otherwise enter N. Throughput class Specifies whether or not throughput class negotiation negotiation is enabled. Enter Y if your subscription allows throughput class negotiation and you wish to enable it. Otherwise enter N. Extended packet Specifies whether or not extended packet sequence sequence numbering numbering is enabled. Enter Y if your subscription allows extended packet sequence numbering and you wish to enable it. Otherwise enter N.
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