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- 27th May 1994
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- Support Group Application Note: Using AUN with the TCP/IP Protocol Suite
- (Release 2).
- Number: 261
- Issue: 1.00
- Author: CAS
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-
- Developer's Notes:
-
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- Applicable Hardware: All RISC OS based machines
-
-
- Related Application Notes: None
-
-
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- Every effort has been made to ensure that the information in this leaflet is
- true and correct at the time of printing. However, the products described in
- this leaflet are subject to continuous development and improvements and
- Acorn Computers Limited reserves the right to change its specifications at
- any time. Acorn Computers Limited cannot accept liability for any loss or
- damage arising from the use of any information or particulars in this
- leaflet. Acorn, the Acorn Logo, Acorn Risc PC, ECONET, AUN, Pocket Book and
- ARCHIMEDES are trademarks of Acorn Computers Limited.
-
- ARM is a trademark of Advance RISC Machines Limited.
- All other trademarks acknowledged.
- ©1994 Acorn Computers Limited. All rights reserved.
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- Support Group
- Acorn Computers Limited
- Acorn House
- Vision Park
- Histon
- Cambridge
- CB4 4AE
- -----------------------------------------------------------------------------
-
- Introduction
-
- This document describes two ways in which software from the AUN Level 4
- Fileserver product and software from Acorn's full standard TCP/IP software
- product, can be used together. This will usually only be relevant to you if
- you want to mix RISC OS/Level 4 Fileserver and UNIX (or RISC-iX) computers
- on the same network.
-
- The first way enables industry standard NFS protocol to run on top of an AUN
- network, such as may be found in a school. This enables NFS file servers
- (e.g. RISC-iX computers) to be connected to the AUN network as well as Level
- 4 Fileserver stations, if that is required.
-
- The second way, to use the two software products together, enables Econet
- protocols such as NetFS and NetPrint to run on top of a non-AUN TCP/IP
- network, such as may be found on a University campus. This enables Level 4
- Fileserver stations to be connected to the TCP/IP network as well as NFS
- (and other) fileservers.
-
- In either of the above environments you may access NFS file servers at the
- same time as Level 4 file servers via different desktop windows on the same
- RISC OS station. Following desktop conventions, you may then transfer files
- between the different types of file server by dragging file icons between
- their windows.
-
-
- Connecting Level 4 Fileservers to a standard TCP/IP network
-
- The AUN Managers Guide outlines the technical basis of an AUN network. In
- essence, the range of TCP/IP addresses used "under the surface" in an AUN
- network are pre-determined according to AUN rules and cannot be altered by
- the user or network manager.
-
- Although AUN understands only a very small subset of all possible TCP/IP
- addresses, in most cases this limitation presents no real problem as TCP/IP
- is used by AUN as suitable hidden technology; in practice the user and
- network manager will only be interested in Econet-like user and management
- interfaces. However the addresses used in a University campus TCP/IP network
- will almost certainly not fall within the narrow range expected by AUN. In
- this environment TCP/IP needs to be fully visible and accessible.
-
- The AUN software product provides a special mechanism, not used in an
- AUN-configured network, to solve this problem when used in conjunction with
- TCP/IP Protocol Suite. The software components you will need are:
-
- !Internet from TCP/IP Protocol Suite
-
- !BootNet from AUN/Level 4 Fileserver
-
- !Server etc from AUN/Level 4 Fileserver
-
-
- 1. Follow the configuration procedure for !Internet, to set up names and
- addresses correct for your TCP/IP network. This procedure is described in
- the Installation Guide included with the TCP/IP Protocol Suite product.
-
- 2. Open up the !BootNet application.
-
- In this case you may ignore !BootNet.!Configure; the equivalent
- configuration information will already have been provided in !Internet.
-
- Open up the directory !BootNet.Files and drag the file
-
- AddMaps
-
- into your text editor.
-
- This file sets up the explicit mappings between the specific four-byte
- TCP/IP addresses used on your TCP/IP network and two-byte Econet-style
- addresses needed to address Level 4 Fileserver software.
-
- Example:
-
- addmap 89.0.2.0 130
-
- will cause TCP/IP addresses 89.0.2.X to be seen by Econet applications in
- the net.station format 130.X.
-
- That is, addmap causes the top three bytes of a TCP/IP address to be handled
- as a "pseudo-net number", and the bottom byte to be handled as a
- "pseudo-station number".
-
-
- 3. Run !Internet followed by !BootNet. This is usually done by adding two
- commands to your main system !Boot, so that the Internet and BootNet
- software starts up automatically when the computer is switched, e.g
-
- *run $.net.!Internet
- *run $.net.!BootNet
-
- This run sequence must be followed.
-
-
- 4. If a station is to function as a Level 4 Fileserver on the TCP/IP network
- then you should configure it to run the Level 4 software after the Internet
- and BootNet software have been initialised. You should see the Level 4
- Fileserver Network Manager's Guide for instructions about how to set up
- Level 4 Fileserver software.
-
- It is not possible to use an AUN Client Boot ROM successfully on a standard
- TCP/IP network since the software in the ROM uses AUN-specific addressing
- conventions. If you are connecting a network interface card equipped with an
- AUN Boot ROM to a standard TCP/IP network then you must ensure that its
- configured state is 'BootNet Off'. This is the default state for the ROM,
- but to make sure you may type:
-
- *Configure BootNet Off
-
- You must NOT run the AUN !GateWay application on a standard TCP/IP network,
- under any circumstances.
-
-
- Connecting NFS (UNIX) file servers to an AUN network
-
- Although it only uses a restricted range of TCP/IP addresses, an AUN network
- is a conformant TCP/IP network underneath the Econet-like veneer. This means
- that other types of computer which support TCP/IP, such as UNIX and RISC-iX
- computers, may connect into an AUN network provided that their own IP
- addresses are configured in line with the underlying AUN-format IP
- addresses. The AUN Managers Guide describes the format of IP addresses in
- AUN.
-
- The software components you will need to run on a RISC OS client station to
- access an NFS file server on an AUN network are:
-
- !BootNet from AUN / Level 4 Fileserver (or AUN Client Boot ROM)
- !NFSFiler from TCP/IP Protocol Suite
-
- You should start up your AUN client station software before running
- !NFSFiler. Full information about using NFSFiler to access files on remote
- NFS file servers is given in the User Guide included in the TCP/IP Protocol
- Suite product.
-
-
-