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Solstice X.25 9.2 Administration Guide

Setting up a Workstation Attached to a LAN

Figure 8-16 Setting up a Workstation Attached to a LAN

Graphic

In this example, a new workstation is being added to the Local Area Network (LAN). When installed on a machine attached to a LAN, X.25 is configured over LLC2 instead of over LAPB.

This kind of configuration is straightforward. You only need to configure the link to the LAN. The default parameters used at both the Packet layer and the LLC2 layer should work in almost all LAN configurations.

To configure a LAN link:

  1. Start x25tool.

  2. In the Links Configuration list, select Link 1, then click on Modify to bring up the Link Editor window.

    You can use Link 1 as a template.

  3. Configure the values for your LAN link, as shown below:

    Figure 8-17 Configuring LAN Link Values

    Graphic

    You can keep almost all of the default values. The Local Address is the MAC address of your machine. You can find it out by entering the following command:


    hostname% arp machinename

  4. Click on Apply.

    Should you need to change the Local SAP or Loopback SAP, you can now do this by selecting Addressing, under Advanced Configurations. However, in most instances the default settings should work. Make sure that you do not change or delete the Local SAP or the Loopback SAP, unless you are certain that your network uses different values.

    Once you have added the LAN link like this, you can start the X.25 software. You should now be able to run your applications over the LAN.

    For example, you can make PAD calls to machines on the same LAN by specifying the link number and the MAC address, followed by the SAP, as shown below:


    hostname% pad 1.0800207111117e

    where 1 is the link number, 080020711111 is the MAC address, and 7e is the SAP.

    See "Configuring the PAD" for information on adding entries to the PAD Hosts Database.

    Note -

    Even if the LAN link is the only link on your machine, you need to specify the link number when using applications such as the PAD. This is because Solstice X.25 defaults to use the lowest numbered WAN link. If there is no WAN link, there is no default link. Another way to deal with this situation is by using the X.25 Routing table. Map the MAC address plus link number to an X.121 address, then make calls to the X.121 address rather than the MAC address. See "Configure X.25 Routing" for an example of configuring the X.25 Routing table.