11/29/94 TCP/IP Over the X.25 Network Interface (XT) SPECIAL NOTICES Information in this document is correct to the best of our knowledge at the time of this writing. Please send feedback by fax to "AIXServ Information" at (512) 823-4009. Please use this information with care. IBM will not be responsible for damages of any kind resulting from its use. The use of this information is the sole responsibility of the customer and depends on the customer's ability to eval- uate and integrate this information into the customer's operational environment. +----------------------------------------------------------+ | | | NOTE: The information in this document has NOT been | | verified for AIX 4.1. | | | +----------------------------------------------------------+ DIAGRAM The following is a diagram of TCP/IP running over the x.25 network interface (xt). =========== ============ xhost <--------mdmeliminator-----> yhost =========== direct connection ============ =========== X25 net ============ xhost <----mdm1------mdm2------> yhost =========== modem connection ============ PROCEDURE FOR SETTING UP IP/X.25: 1. Make sure the microcode exists (/etc/microcode/icaaim.com). If not, install it and reboot. 2. Make sure the ODM database is synchronized. If x.25 adapter cards have been moved to different slots, it is possible that the ODM database will have incorrect information. To verify that the database has correct information, run the following command: lsdev -Cc adapter You will see a list of objects and their current state. There should be one entry for each X.25 adapter you have installed. If the PTFs for support on the ARTIC card family are installed on your machine, you will see ampx0, ampx1, etc. If the PTFs are not installed, the TCP/IP Over the X.25 Network Interface (XT) 1 11/29/94 adapters will be named x25s0, x25s1, etc. See fax on rename.adapter.sna (from the defect support center) for information on ARTIC support. If there is an error, run the following command for each x25 adapter to correct the database: rmdev -l objectname -d For example, With ARTIC support rmdev -l x25s0 -d # x25 device driver rmdev -l x25s1 -d # x25 device driver rmdev -l ampx0 -d # x25 adapter rmdev -l ampx1 -d # x25 adapter Without ARTIC support rmdev -l x25s0 -d # x25 adapter rmdev -l x25s1 -d # x25 adapter After running rmdev for each x25 adapter, boot the machine. 3. If the local network user address is not already config- ured, use SMIT to set it. To do this, enter "smit x25" and go to "Change Network Parameters". For systems at 3.2.3E or later, enter "smit x25cs" and go to "Change / Show Network Parameters". 4. Set any other X.25 configuration parameters you need to customize at this point. This is optional. 5. If the connection is direct and the line type is not already configured, use SMIT to set it to DCE for one of the machines. Enter "smit x25" and go to "Change Packet Parameters". 6. Bring up the XT interface (xhost and yhost must be in /etc/hosts on both machines or available from a nameserver). NOTE: If the connection is direct, the following com- mands must be issued simultaneously on both machines due to link start-up requirements for direct connection. Normally the host is attached to an X.25 network which would not require this. If the host is connected to an X.25 network, the network interface may be configured via SMIT ("smit tcpip"), allowing automatic startup of the interface at IPL time. DO NOT do this with a direct connection due to the timing problem described above. On xhost, do the following: a. Enter "smit mkinet". b. Select "Add an X.25 Network Interface". TCP/IP Over the X.25 Network Interface (XT) 2 11/29/94 c. Select xt0 for the first x25 adapter, xt1 for the second x25 adapter, etc. d. Provide for the "INTERNET ADDRESS (dotted decimal)" and "Network MASK (hexadecimal or dotted decimal)". On yhost, do the following: a. Enter "smit mkinet". b. Select "Add an X.25 Network Interface". c. Select xt0 for the first x25 adapter, xt1 for the second x25 adapter, etc. d. Provide for the "INTERNET ADDRESS (dotted decimal)" and "Network MASK (hexadecimal or dotted decimal)". 7. Map every remote x25 host's IP address to X.25 NUAs on smit by issuing "smit mkx25s". You will need the fol- lowing information: Remote HOSTNAME Remote DTE Address X25 Device Number Other Optional X.25 Facilities 8. Now verify that the X.25 network interface is opera- tional: On the xhost, issue the command ping yhost On the yhost, issue the command ping xhost TCP/IP Over the X.25 Network Interface (XT) 3 11/29/94 READER'S COMMENTS Please fax this form to (512) 823-4009, attention "AIXServ Informa- tion". You may also e-mail comments to: elizabet@austin.ibm.com. These comments should include the same customer information requested below. Use this form to tell us what you think about this document. If you have found errors in it, or if you want to express your opinion about it (such as organization, subject matter, appearance) or make sug- gestions for improvement, this is the form to use. If you need technical assistance, contact your local branch office, point of sale, or 1-800-CALL-AIX (for information about support offer- ings). These services may be billable. Faxes on a variety of sub- jects may be ordered free of charge from 1-800-IBM-4FAX. Outside the U.S. call 415-855-4329 using a fax machine phone. When you send comments to IBM, you grant IBM a nonexclusive right to use or distribute your comments in any way it believes appropriate without incurring any obligation to you. NOTE: If you have a problem report or item number, supplying that number may help us determine why a procedure did or did not work in your specific situation. Problem Report or Item #: Branch Office or Customer #: Be sure to print your name and fax number below if you would like a reply: Name: Fax Number: ______________________________________________________________________ ______________________________________________________________________ ______________________________________________________________________ ______________________________________________________________________ ______________________________________________________________________ ______________________________________________________________________ ______________________________________________________________________ ______________________________________________________________________ ______________________________________________________________________ ______________________________________________________________________ ______________________________________________________________________ ______________________________________________________________________ END OF DOCUMENT (tcpip.x25.tcp, 4FAX# 2690) TCP/IP Over the X.25 Network Interface (XT) 4