Is NetView/6000 over slip possible?

ITEM: RTA000042159



                                                                                
QUESTION:                                                                       
Customer needs to do a demo of his NETVIEW/6000 system                          
to his executives.  He had hoped to be able to dial-in to the RS/6000           
running Netview/6000 from a workstation equiped with appropriate                
software. I believe what he has is a PC system running either OS/2 or           
Windows/NT which he would potentially use as the remote workstation.            
                                                                                
Ques:  Is it even possible for him to do this, and if so, what software         
    is  required which would allow him to display Netview/6K at the             
       remote PC?                                                               
                                                                                
Also, where can he find information on how to setup this                        
connection (is it a SLIP connection)?                                           
                                                                               
Would appreciate a call at 719-535-5851 or pager 1-800-sky-page pin#            
8298112 if we could get this decided asap.                                      
                                                                                
---------- ---------- ---------- --------- ---------- ----------                
A: In order to display Netview/6000 on an OS/2 machine, you will need           
TCP/IP version 2.0 for OS/2 which includes X-Windows Sys Server User            
Pak. Please refer to SALESMAN item number 65G1220 on HONE for detailed          
information.                                                                    
                                                                                
I am not aware of any X-windows emulators for Windows NT. You might             
want to contact your Microsoft vendor about this option.                        
                                                                                
Yes, you will need SLIP connection to dial-in, but you should be aware          
that performance may not be good when running Netview/6000 remotely             
over a slip connection because of the limited bandwidth of a slip line.        
The dialogue between an X-server and X-clients usually results in               
large amounts of network traffic, which is why Netview/6000 may                 
take long to come up.                                                           
s.                                                                              
Ideally, you should obtain the line at up to 38 kbps. Given your                
scenario, the best solution is a 14.4 kbps modem over a dial-up line.           
                                                                                
We cannot contact you by phone unless you are registered for phone              
assistance. In order to register for phone assistance please send               
a PROFS note to AIXSPEC@AUSVM8.                                                 
                                                                                
Unfortunately, we do not have any information on setting up SLIP                
connection over a modem between OS/2 and RISC. However, I do have               
HOWTO item on setting up SLIP between two RISC machines. Below I                
appended the item on setting up SLIP connection over the modem between         
two RISCs.                                                                      
                                                                                
If you feel that you need more specific information on setting up               
OS/2 side of a SLIP connection please re-open this item and we will             
transfer it to OS/2 support group.                                              
                                                                                
 Hopefully, this information will be helpful.                                   
                                                                                
-----------------------------------------------------------------------         
  SLIP (Serial Line Interface Protocol)                                         
                                                                                
       Special Notices  . . . . . . . . . . . . . . . . . . . .   1             
       Planning SLIP Addresses  . . . . . . . . . . . . . . . .   1             
       Setting Up SLIP  . . . . . . . . . . . . . . . . . . . .   2             
       Bringing Down a SLIP Connection  . . . . . . . . . . . .   3            
       Other Notes on SLIP  . . . . . . . . . . . . . . . . . .   4             
       Information on Network Address Types (Classes)   . . . .   5             
       Notes on Adding RTS Handshaking to a tty Port  . . . . .   6             
       Reader's Comments  . . . . . . . . . . . . . . . . . . .   8             
                                                                                
  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) 823-5972.                       
                                                                                
       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.                                                 
                                                                                
       +----------------------------------------------------------+             
       |                                                          |             
|      | IMPORTANT NOTICE:  This document will no longer be       |             
|      | updated and remains available only for high severity     |             
|      | situations.                                              |             
       |                                                          |             
|      | For all other situations, we recommend that you order    |             
|      | "SYSTEM MANAGEMENT:  COMMUNICATIONS AND NETWORKS", PUB-  |             
|      | LICATION NUMBER GC23-2487.                               |             
       |                                                          |             
       |                                                          |             
       +----------------------------------------------------------+            
                                                                                
  PLANNING SLIP ADDRESSES                                                       
                                                                                
       Probably one of the most important things to consider when               
       planning your SLIP connection is the addressing.  You should             
       examine which address class you wish to use and then develop             
       the actual numerical values (see "Information on Network                 
       Address Types (Classes)" on page 5 for possible class                    
       types).                                                                  
                                                                                
       Please verify that your SLIP addresses DO NOT conflict with              
       any existing (network) addresses on your system.  For sim-               
       plicity, these addresses are used in the following                       
       instructions:                                                            
                                                                               
          1.1.1.2   for local system  "A"                                       
          1.1.1.1   for remote system "B"                                       
                                                                                
       Please note that this SLIP example starts SLIP from the                  
       command line.  The following instructions add a tty via SMIT             
       and then configure and start SLIP from the command line.  It             
       is good to first configure from the command line, as in                  
       these instructions, because command line options are easier              
                                                                                
  SLIP (Serial Line Interface Protocol)  1                                      
                                                                                
                                                         02/08/94               
                                                                                
       to correct.  After you get SLIP working correctly from the               
       command line, bring it down, detach it (to start clean), and            
       reconfigure it through SMIT.  Configuring it through SMIT                
       will make the configuration permanent and allow SLIP to                  
       start automatically at each system reboot.                               
                                                                                
  SETTING UP SLIP                                                               
                                                                                
  Step 1:  Configure/Add a tty Port                                             
                                                                                
       Add a tty for serial port S2 on BOTH machines A and B.  (*               
       means user can change the setting.)                                      
                                                                                
           Login:   as root or "su" to root                                     
           Enter:   smit tty                                                    
           Select:  Add a TTY                                                   
           Select:  tty rs232 Asynchronous Terminal                            
        *  Select:  sa1 Available 00-00-S2 Standard I/O Serial Port 2           
           Press:   F4    (for PORT number)                                     
        *  Select:  s2                                                          
           Change:  "Enable LOGIN" to "disable"                                 
        *  Change:  "BAUD rate" to desired speed                                
           Change:  XON-XOFF to "no"                                            
           Press:    key until tty is added or changed                   
                                                                                
       Add ONE of the following lines to the /etc/uucp/Devices file             
|      on both the server and the remote client.  (If you are not               
|      sure which line to use, try one and, if you get an error,                
|      try another.)  Be sure to change 9600 to the correct bps                 
|      rate for your modem.                                                     
                                                                                
          Direct tty1 - 9600 direct                                            
          Direct tty1 - 9600 hayes                                              
|         ACU    tty1 - 9600 hayes                                              
                                                                                
  Step 2:  Assign Addresses for SLIP                                            
                                                                                
       Configure SLIP lines for both systems A and B using selected             
       addresses.  Here, 1.1.1.2 is the address for A and 1.1.1.1               
       addresses.  Here, 1.1.1.2 is the address for A and 1.1.1.1               
       is the address for B.                                                    
                                                                                
       On system A, enter:                                                      
                                                                                
          ifconfig  sl0  1.1.1.2   1.1.1.1   up                                 
                                                                                
       On system B, enter:                                                     
                                                                                
          ifconfig  sl0  1.1.1.1   1.1.1.2   up                                 
                                                                                
  Step 3:  Verify                                                               
                                                                                
       Check status on BOTH machines with the following command                 
       line entry:                                                              
                                                                                
          ifconfig  sl0                                                         
                                                                                
   SLIP (Serial Line Interface Protocol)  2                                     
                                                    02/08/94                    
                                                                                
  Step 4:  Make the SLIP Connection                                             
                                                                               
       On the remote system to be dialed into, enter:                           
                                                                                
          slattach  tty#                                                        
                                                                                
|      Use the following command line option to dial out of the                 
|      local system.  (Replace "#" with your tty number.)                       
                                                                                
          slattach  tty#  9600  ' "" AT OK ATDT555-3346 CONNECT "" '            
                                                                                
       The above string is interpreted as "Use tty# at 9600 baud,               
       send 'AT' and I should get back an 'OK,' dial 555-3346 and I             
       should get a 'CONNECT' back."                                            
                                                                                
       NOTES:                                                                   
                                                                               
       1.  The tty ports MUST be disabled for use with SLIP and not             
           set for "share" or "delay" (no getty).                               
                                                                                
       2.  In the modems, you CANNOT use XON/XOFF, software flow-               
           control.  XON/XOFF should also be set off in SMIT for                
           tty.   Use of XON/XOFF will not allow SLIP to work prop-             
           erly (SLIP will be up but you won't be able to ping the              
           other system).                                                       
                                                                                
       3.  DTR should be set so that the modem tracks the status of             
           DTR and hangs up when an "on" to "off" transition                    
           occurs.  slattach will bring DTR up.                                 
                                                                                
       4.  CD should be set so the modem tracks the status of DTR               
           (AT&C1).                                                            
                                                                                
       5.  On a modem with Hayes-compatible AT commands, "AT&K0"                
           sets no-flow-control and "AT&K3" sets RTS/CTS on.  DTR               
           can be set with "AT&D2".  See "Notes on Adding RTS Hand-             
           shaking to a tty Port" on page 6 for instructions on                 
           adding RTS to a port on the RISC System/6000.                        
                                                                                
       Test the SLIP connection between system "A" and system "B"               
       by using the ping command.  On system "A", enter:                        
                                                                                
          ping 1.1.1.1                                                          
                                                                                
       System should display packets being sent and received from               
       that address.                                                            
                                                                               
  BRINGING DOWN A SLIP CONNECTION                                               
                                                                                
       1.  Enter "ps -ef | grep slatt" to search for processes                  
           associated with SLIP.                                                
                                                                                
       2.  ******** VERY IMPORTANT ¢¢ *************                             
                                                                                
           Kill these processes WITHOUT the -9 option.  The proper              
           way to kill a slattach is with "kill ".  If SLIP                
           has been defined via SMIT, severe problems could occur               
           if you use "kill -9".  Problems can effect your system               
           and may cause a crash with LED 888.                                  
                                                                                
       SLIP (Serial Line Interface Protocol)  3                                 
                                                  02/08/94                     
                                                                                
           Should system crash with the 888 LED, a reboot will NOT              
           correct the problem.  You will need to use SMIT to                   
           remove the SLIP interface and associated tty.  Use SMIT              
           again to reconfigure tty and SLIP.                                   
                                                                                
           *****************************************                            
                                                                                
       3.  On the command line, enter "ifconfig sl# down" where #               
           is the number of your SLIP interface (sl0, sl1, etc.).               
                                                                                
       4.  To completely remove the SLIP configuration from your                
           system, enter:                                                       
                                                                                
              ifconfig  sl#  detach                                            
                                                                                
       5.  If SMIT was used to add the SLIP line, use SMIT again to             
           remove it.  This does not, however, kill the slattach.               
                                                                                
  OTHER NOTES ON SLIP                                                           
                                                                                
|      o   ** IMPORTANT NOTE:  With AIX releases prior to 3.2.4,                
           when configuring multiple SLIP lines on a single RISC                
           System/6000, make sure direct or leased-line interfaces              
           are configured first and are the lowest numbered inter-              
           faces.                                                               
                                                                                
           Example:  If there are three interfaces, SL0, SL1, SL2,              
           and one is over leased-line, that one should be defined              
           as SL0.  Any interfaces defined to use modems (which                
           take more time to setup by system) should be configured              
           or defined last as SL2 or SL3.                                       
                                                                                
           Troubleshooting:  If a leased-line SLIP interface is                 
           defined last or as a higher number (sl1 as opposed to                
           sl0) a problem might occur at boot time.  The system may             
           assign it to sl0 and the user may not be aware of the                
           change.  SLIP will be up but a ping to one address may               
           be crossed to another.                                               
                                                                                
       o   A SLIP connection, when configured from the command                  
           line, will stay in effect only until the system is reset             
           or powered down.  This is because nothing is permanently             
           added to the system's startup files or the ODM database.             
                                                                               
           It is for this reason that we suggest experimenting with             
           SLIP first on the command line -- then, once the config-             
           uration is understood, add it through SMIT.                          
                                                                                
           On a SLIP direct connect, no "baud rate" or "dial                    
           string" is needed.  A direct connect is where a serial               
           cable is run directly between two systems (no modems                 
           involved).                                                           
                                                                                
       o   On a SLIP connection over a LEASED-LINE, no "dial                    
           string" is needed.  Leased-line is where there is a ded-             
           icated phone line between two modems.                                
                                                                                
       o   Ports MUST be disabled for SLIP (not shared or delayed,              
           so no getty is running on the port).                                
                                                                                
       o   When slattach is used to link a tty to a SLIP interface,             
           it will take the FIRST available SLIP interface.  If                 
           more than one exists, a problem might occur during                   
           bootup when links to ttys might occur in the wrong order             
           (right tty with wrong interface and vice-versa).                     
                                                                                
       o   The SLIP driver is the file "/etc/network/if_sl".                    
                                                                                
       o   If you cannot ping or access a remote machine, the most              
           likely causes would be:                                              
                                                                                
           -   Incorrect modem or port settings                                 
                                                                                
               Check that XON is not on either modem or port.                  
               Verify that DTR and CD handling are set correctly in             
               both modems.                                                     
                                                                                
           -   Bad cabling or phone lines                                       
                                                                                
               Test connection with ATE or cu by dialing other                  
               system and being able to login.  This would be as a              
               first test but does not eliminate the chance of port             
               or modem problems.  Use IBM cabling or cable that                
               has adequate shielding.                                          
                                                                                
           -   Check modem profile.  If the "Quiet Enable" (or "Q"              
               value) is set to "1", as with most Hayes compat-                 
               ibles, try changing it to "0" (for example, AT&Q0).              
               If the TD and RD lights flicker when you ping across            
               SLIP, this might be your problem.                                
                                                                                
           -   Incorrect or conflicting network addresses                       
                                                                                
               Issue a "netstat -i" to examine.                                 
                                                                                
           -   A port is not set to "disable".                                  
                                                                                
  INFORMATION ON NETWORK ADDRESS TYPES (CLASSES)                                
                                                                                
       Network address classes fall into the following ranges:                  
                                                                                
          Class A:   0   to 128                                                 
          Class B:   128 to 191                                                 
          Class C:   192 to 255                                                
                                                                                
  Class "A" Address                                                             
                                                                                
             ###.###.###.###                                                    
              |   |___|___|_________ Host Address                               
              |_____________________ Network Name                               
                                                                                
       A Class A address consists of an 8-bit network address and a             
       24-bit local or host address.  The first bit in the network              
       address is dedicated to indicating the network class,                    
       leaving 7 bits for the actual network address.  Since the                
       highest number that 7 bits can represent in binary is 128,               
       there are 128 possible Class A network addresses.  Of the                
       128 possible network addresses, two are reserved for special             
       cases: the network address 127 is reserved for local                    
                                                                                
         SLIP (Serial Line Interface Protocol)  5                               
                                                   02/08/94                     
                                                                                
       loopback addresses, and a network address of all ones indi-              
       cates a broadcast address.                                               
                                                                                
  Class "B" Address                                                             
                                                                                
             ###.###.###.###                                                    
              |   |   |___|__________ Host Address                              
              |___|__________________ Network Name                              
                                                                                
       A Class B address consists of a 16-bit network address and a             
       16-bit local or host address.  The first two bits in the                
       network address are dedicated to indicating the network                  
       class, leaving 14 bits for the actual network address.                   
       Therefore, there are 16,384 possible network addresses and               
       65,536 local host addresses.                                             
                                                                                
  Class "C" Address                                                             
                                                                                
            ###.###.###.###                                                     
             |   |   |   |___________ Host Address                              
             |___|___|_______________ Network Name                              
                                                                                
       A Class C address consists of a 24-bit network address and               
       an 8-bit local host address.  The first two bits in the                  
       network address are dedicated to indicating the network                  
       class, leaving 22 bits for the actual network address.                  
       Therefore there are 2,097,152 possible network addresses and             
       256 possible local host addresses.                                       
                                                                                
  Class "D" Address:                                                            
                                                                                
       NOTE:  Other systems may support Class D addresses, which                
       are multicast addresses with the highest order bits set to               
       1-1-1.  TCP/IP   does not support Class D addresses.                     
                                                                                
  NOTES ON ADDING RTS HANDSHAKING TO A TTY PORT                                 
                                                                                
|      For AIX levels 3.2.5 and greater, there is a field for RTS               
|      in the smit panel for Adding a TTY Device.  For these                    
|      levels, use smit to add RTS handshaking.                                 
                                                                               
|      For AIX levels before 3.2.5, use one of the methods in this              
|      section to add RTS handshaking.                                          
                                                                                
       A small C program is shown below as an example of how to add             
       RTS to a tty port on the 6000.  Using this C program is the              
       easiest method to accomplish the task and can be made perma-             
       nent (read program comments) but, as an alternative, you                 
       could use the stty command as follows:                                   
                                                                                
  If You Wish to Use stty                                                       
                                                                                
       1.  Edit the "/etc/uucp/Devices" file to contain the fol-                
           lowing in the leftmost column:  "Direct tty# - Any                   
           direct".                                                             
                                                                               
           NOTE:  Replace # with your tty number.                               
                                                                                
       2.  Remove getty on the port with "pdisable tty#".                       
                                                                                
     SLIP (Serial Line Interface Protocol)  6                                   
                                                     02/08/94                   
                                                                                
       3.  Run the command "cu -ml tty#".                                       
                                                                                
       4.  On another terminal or session issue command:                        
                                                                                
              stty add rts < /dev/tty#                                          
                                                                                
       5.  Type "~."  (that's a tilde and a period to end cu                    
           session).                                                           
                                                                                
           NOTE:  If cu is not installed on your system, use any                
           available communication program to connect to the modem.             
           This will keep "carrier" signal high and allow the stty              
           command to complete.                                                 
                                                                                
  C Program                                                                     
                                                                                
  /*             C Program to Add RTS Discipline to tty Port(s).                
                                                                                
       To make the program more permanent, insert the the file name of          
       the compiled version (complete with path) at the end of your             
       "/etc/rc" file, and the changes will take effect again at next           
       reboot.  You can modify this program to include a variable in            
       place of /dev/tty0 which would change in a loop to be any tty           
       numbers for which RTS is requested.  Program is setup to change          
       only tty0.                                                               
                                                                                
       NOTE: This program is supplied "as is" and is NOT supported by           
             IBM.  It is intended as an aid to administrators only.             
                                                                                
       To create:     vi addrts.c enter                                       
       To compile:    cc -o addrts  addrts.c                                    
  */                                                                            
  /***********************   Program starts now   **********************        
****/                                                                           
  #include stdio.h                                                            
  #include fcntl.h                                                            
  #include termios.h                                                          
  #include sys/tty.h                                                         
  main()                                                                        
  {                                                                             
     int fd;                                                                    
     fd = open("/dev/tty0", O_NDELAY|O_RDWR);                                   
     ioctl(fd, TXADDCD, "rts");      /*  adds rts to tty0       */              
     close(fd);                                                                 
  }                                                                             
  /***********************   Program Ends Here   ***********************        
*/                                                                              
                                                                                
---------- ---------- ---------- --------- ---------- ----------                
                                                                                
                                                                                
                                                                                
                                                                               
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
This item was created from library item Q658815      CRJQP                      
                                                                                
Additional search words:                                                        
ACC ACCESS AIXWINDOWS APPLIC APPLICATION COMMUN COMMUNICATIO CRJQP              
DIAL EXECUTE IX MAY94 NETVIEW OZNEW OZNOTPID REMOTE RISC RISCOC                 
RISCSYSTEM RJE RUNNING SOFTWARE URGENT 6K                                       
                                                                                
                                                                                
                                                                               

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