The following information explains what you need to install the X.25 program and how to configure your system for X.25 communications.
Before you install the X.25 program, ensure that your system meets the minimum software and hardware requirements.
You need the following software:
You need the following hardware:
- The Portmaster adapters are made up of a processor board, along with an add-on electrical interface board (EIB). The EIB requires you to select the type of line interface to be used. The adapters should have 1 or 2 MB of memory.
- The ARTIC960 adapters are made up of a processor board, along with an add-on applications interface board (AIB). The AIB type determines the line interface. The adapters must have 4MB of memory.
Note: The PowerPC model must have PCI slots in order to use this adapter.
The best method for data transfer over a wide area network depends on a number of factors. Among the common factors are the amount of data traffic, the frequency that data is sent, response time required, and so forth. Along with these, the tariff available for the network providers can play an important part in protocol choice.
Once X.25 is decided upon, the specifics of the network subscription must be planned along with the network provider. Switched virtual circuits can be used by different applications, possibly to different remote destinations, at different times. Permanent virtual circuits are dedicated to a given remote destination. Depending on the type of X.25 traffic that is generated, the number and speed of X.25 lines must be decided, along with the number of virtual circuits, and so forth.
With the characteristics of the X.25 interfaces defined, X.25 adapters (X.25 Co-Processor/2 or the ARTIC Portmaster Adapter) to support these interfaces must be added to the system. Choice of adapter and line interface depends on the characteristics of the network subscription.
If you are using an AIX Version 3 system, the base AIX Version 3 X.25 may already be in use. With the base system active, it should be decided which adapters should be used to support the old X.25 system and which should be used to support the licensed program.
Note: If your X.25 applications use the Data Link Provider Interface (DLPI), and you are migrating to AIXLink/X.25 Version 1.1.4 from a prior version of the product, you may need to make changes to your DLPI applications.
The changes are necessary to allow your applications to make use of all adapters supported by the AIXLink/X.25 product. If your DLPI applications are not configured to use the IBM 2-Port Multiprotocol PCI adapter, then the changes are not strictly required. See Chapter 6, DLPI Overview, for more information.
The X.25 licensed program is delivered as an install-image. To install the X.25 program:
|AIX Version 3.2.5 users||The licensed program is installed as one option, which installs all the product's files.|
|AIX Version 4 users||The files making up the licensed program are divided into a number of sets that may be installed independently. Installation of the X.25 run time system is a prerequisite for installation of any of the other X.25 options. When installing the X.25 files, the language environment should be set to E_US. The following options are available:|
The adapters should be installed as described in the system unit's documentation.
- The ARTIC960 adapter is supported only on AIXLink/X.25 Version 1.1.3 or later. Prior to using AIXLink/X.25 on the ARTIC960 adapter, install the IBM ARTIC960 AIX Support Program for RS /6000 software for AIX Version 4. This software is shipped on a diskette packaged with the adapter and must be version 1.1.3 or later. When running X.25 on an ARTIC960 adapter, do not directly run any other ARTIC960 software on that adapter, including the programs in /usr/lpp/devices.artic960/bin. The ARTIC960 adapter is not supported on 7006- and 7011-type systems.
- If you install the ARTIC960 AIX Support Program for RS /6000 Version 1.1.3 after installing AIXLink/X.25, the following error may occur when attempting to add a twd AIXLink/X.25 device driver to the ARTIC960 adapter:
- The ARTIC960 EIA-232E (V.24) AIB can use the same fanout boxes and cables as those used for the Portmaster Adapter/A. The ARTIC960 X.21 AIB cannot. If the ARTIC960 V.36 AIB is being connected to a V.35 network, the same fanout box and cables can be used as those for the Portmaster Adapter/A. If the ARTIC960 V.36 AIB is being connected to a V.36 network, the ARTIC960 6-port V.36 cable must be used.
Please order the appropriate cable for your interface equipment.