Conference ufhis::siemens_communication

LAN-Kopplung:

SYSGEN-Anweisungen f�r die BS2000-Generierung:

DVC N1,6E,A (Channel, adresse1,I)	LAN-Kanal 1
DVC N2,6E,A (Channel, adresse2,I)	LAN-Kanal 2
DVC N3,6E,A (Channel, adresse3,I)	Dummy - nur zur Reservierung
DVC N4,6E,A (Channel, adresse4,I)	Dummy - nur zur Reservierung

Anmerkung:
Ab BS2000 V 9.0 wird bei der Systemgenerierung der Ger�tetyp 6D 
(=LAN-Kanaladapter) unterst�tzt.

Am Bytemux werden 4 Adressen durch den LAN-Kanaladapter belegt. Die niedrigste 
wird hardwarem��ig am Adapter enigestellt.

adresse1:	Leseleitung		adresse3: reserv.
adresse2:	Schreibleitung		adresse4: reserv.


TRANSDATA-Generierung:
----------------------
%LTNG	VEPROZ=LLC1,
	VEWEG=LAN/CSMACD,
	LANADR=123456789abc	<--- Adresse eigner Anschlu�
	DEVTYP=TRANSO
	DEVMN=(N1,N2)

%KNOT	KNOTNAM=Lanname

Beispiel f�r die Generierung eines HOST am LAN-Knoten
-----------------------------------------------------
(Empfehlung: Wenn kein Engpass bei der Vergabe von Prozessornumern besteht, 
sollte zur Dokumentation der Operand PRONR verwendet werden)

%PRO	PROTYP=HOST/BCAM,
	PRONAM=hostname,
	LANADR=1234567589abc	<--- Adresse HOST-Anschlu�
	PROFIL=ISO4
	NAKNO=JA

Beispiel f�r die Generierung eines PC-MX2 am LAN-Knoten
-------------------------------------------------------

%PRO	PROTYP=HOST,
	PRONAM=pcname,
	LANADR=1234567589abc	<--- Adresse PC-Anschlu�
	PROFIL=ISO4
	NAKNO=JA
 

The System Generation for BS2000 (known as the RDF - resource definition file)
requires important parameters which are often overlooked by the BS2000
System Managers when setting up a heterogeneous connection:


	XSYSP	EINSATZ=HOST/BCAM,	<= the host description
		...
		...	

	XLTNG	DEVMN=...		<= the line to the FEP 
					   i.e the channel adapter

	XPRO 	PRONR=1			<= the macro XPRO defines the processor/
					   i.e the system 
		PROTYP=VR		<= in this case the FEP

	XPRO 	....			<= other systems
	.
	.
---DEC specific  start----------------------------------------------------------

	XPRO 	PRONAM=DECname 		<= the name by which the DEC system
					   is indentified on the BS2000 system;
					   This has to be the same value as 
					   the VAX/FTSIE Local System Name
		GATE=FEPname		<= the name of the GATEway system 
					   i.e the name of the FEP. This 
					   must be the same as the name
					   in the XSYSP PRONAM=name of the 
					   PDN FEP generation see X.25 - PDN
					   parameters
		PROFIL=ISO		<= the parameter that identifies that
		......			   this system can only be reached over 
					   OSI Transport protocols

---DEC specific  end  ----------------------------------------------------------

		.
		.

The DEC specific parameters can also be added dynamically at the relevant 
BS2000 console with the following command: (no guarantees)

/BCIN DECname,GEN=REMOTE,ROUTE=FEPname,PROFIL=ISO,ADM=U
       	A			A
    	|			|
    	----------------------------------- see above 
    
    	
Hope this helps.

John
    
    

* 
*		-----------
*               | BS2000  |	XSYSP
*  		| Host    |
*		-----------
*		     |
*		  #######
*         LAN     # 9632#  XKNOT
*         Channel #     #
*	  Adaptor #######  XLTNG
*		     |			
*	|===================================================================|
*				|		    |	
*	CSMA/CD		    ----------		----------
*	802.3/2 LAN	    | DEC VMS|		| DEC VMS|
*			    | VAX01  |		| VAX02  |
*			    ----------		----------
*				XPRO		   XPRO
*
********************************************************************************
* SYSGEN-Commands for the BS2000-Host System Generation:
********************************************************************************
* DVC N1,6E,A (Channel, adresse1,I)	LAN-Channel  1
* DVC N2,6E,A (Channel, adresse2,I)	LAN-Channel  2
* DVC N3,6E,A (Channel, adresse3,I)	Dummy - reserved 
* DVC N4,6E,A (Channel, adresse4,I)	Dummy - reserved 
*
*
* Note:
* The system generation BS2000 V9.0 supports the Device Type 6D 
* (LAN Channel Adaptor) 
* 
* 4 Bytes of the Bytemux address are reserved by the LAN-Channel adaptor. 
* The lowest address is set on the Adaptor HW.
* 
* address 1:	read 		address 3: reserved
* address 2:	write		address 4: reserved
* 
* 
********************************************************************************
* Host System 
********************************************************************************
*
	XSYSP	EINSATZ=HOST/BCAM,		<= defines that this system 
						   generation describes a host
						   system
		PRONAM=SIEMENS1,		<= Processor name
						   = FTSIE 'SYMBOLIC NAME'
		PRONR=12,			<= Processor Nr.
		REGNR=18			<= Area Nr.
*
********************************************************************************
* XLTNG macro describes the LAN Adaptor attached to the Host System 
********************************************************************************
*
	XLTNG	UEPROZ=LLC1,			<= type of transmission protocol
		UEWEG=LAN/CSMACD,		<= type of LAN
		LANADR=D3C1D5001001,		<= HW-LAN Adaptor address
						   = FTSIE 'HOST NAME'- NAP name
		DEVTYP=TRANS0,			<= device type 
		DEVMN=(N1,N2)			<= bytemux device mnemonic
						   the parameters N1,N2 have to
						   be the same as the ones 
						   defined in the BS2000 system
						   commandos (see above)
*
********************************************************************************
* XKNOT macro describes the a p[hysical or a logical concentrator
********************************************************************************
*
	XKNOT	KNOTNAM=LAN#1			<= Name given to this LAN	
						   
*
********************************************************************************
* XPRO macro describes the Parameters of other systems on the LAN 
********************************************************************************
*

	XPRO	PROTYP=HOST/BCAM,		<= system type i.e HOST
		PRONAM=VAX01,			<= system name
						   = FTSIE 'LOCAL SYSTEM NAME'
		LANADR=AA00040097C4,		<= 802.3 Address 
						   If DEC then = Physical Adr.
		PROFIL=ISO4,			<= defines Transport Class
		NAKNO=JA			<= defines that the system is
						   directly adjacent to the 
						   BS2000 Host

	XPRO	PROTYP=HOST/BCAM,		<= system type i.e HOST
		PRONAM=VAX02,			<= system name
						   = FTSIE 'LOCAL SYSTEM NAME'
		LANADR=AA00040097D8,		<= 802.3 Address 
						   If DEC then = Physical Adr.
		PROFIL=ISO4,			<= defines Transport Class
		NAKNO=JA			<= defines that the system is
						   directly adjacent to the 
						   BS2000 Host
	.
	.
	.
 
Hope this helps
John
    

Null-Modem: Siemens DTE - Digital DCE

Attached you'll find BS2000 configuration parameters for a 'back-to-back'
installation (via modem-eliminator). 
The BS2000 is working as DTE, the VAX as DCE. You have to install the VAX 
as described in the PSI-Management Guide Sec. 2.6


------------------------------------------------------------------------
XLTNG	LPUFADR=13,
	UEGSW=9600,
	UEPROZ=HDLC/LAPB,
	DUETYP=TYP21,
	LPUFTYP=96520,
	SKANALN=1-10,
	MODTAKT=JA,
	VUEZEIT=120,
	UEWEG=X25/TYP4,
	DTEADR=<BS2000-DTE_ADDRESS incl. SUBADDRESS>,
	NRZI=NEIN,
	EASS=0
XKNOT	KNOTTYP=X25,
	STATNUM=300,
	KNOTNAM=KNVAX1
XSTAT	STATTYP=RECHNER,
	STATNAM=<VAX_NAME=FTSIE:LOCAL_PARTNER_ADDRESS>,
	STATNUM=301,
	CONMODE=DYN,
	DTEADR=<VAX-DCE_ADDRESS INCL. SUBADDRESS>,
	PARTPRO=2/182,
	PARTNAM=$BCAMNET,
	PARVER=NEIN,
	QUALIF=NEIN,
	AKTIV=JA,
	IX25=NEIN
                                                     

Thanks for your input, however I feel your entry may confuse people into 
thinking that one needs a seperate generation for 'modem-elinator' connections.
This is not so, as numerous installations have proved.

Your generation does not vary to that of 26.8 except for the parameters:

XLTNG	 UEWEG=X25/TYP4,	<= Packet Switched Data Network for Berlin
         PARVER=NEIN,		<= No Parellel connections (Default is NEIN)
         QUALIF=NEIN,		<= No Q-bit - already set by IX25=NEIN
         AKTIV=JA,		<= BS2000 management decision whether 	
		 		   all 'stations' are 'activated' at start-up
				   or per management command.

	 ...


Hope this helps
John

    Siemens has tried to set up a BS2000 System as described in case 3 of
    note 26.12. at a customer. They came to the point, that ther is a bug
    in the PDN Software, so that it could not handle the subadresses
    correctly.
    
    This is just a warning concerning case 3. I am very interested in
    getting a reference where such a configuration is running. At our
    customer we've done case 2 and it went fine ! 
    
    Regards, Ralf
    
    PS: By the way I think there is a small bug in the pictures: the rule
    of DTE and DCE is just reverse ( VAX: DCE - PDN: DTE).

The System Generation for PDN is carried out on a BS2000 and can be either 
downloaded over the Network or it is loaded locally. 

The Network Generation is done individually for each PDN system and 
represents that particular PDN's view of the network, its associated
peripherals and applications. 

An X.25 PDN generated System consists of two bundled Products PDN-GA and 
X.25 Port.

With the introduction of the X.25 Port Version 3.0 there are 3 cases that have 
to be considered:

1.      #1 BS2000 host , PDN with X.25 Port 
2.   >  #1 BS2000 hosts, PDN with X.25 Port < V3.0 
3.   >  #1 BS2000 hosts, PDN with X.25 Port = V3.0 

NB. The three example cases refer to a 'private' X.25 connection. In this case 
it is recommended that DEC plays the role of DCE (profile ISO8208) and Siemens
plays the role of DTE. Of course in the case of connection through a PSDN
(Public switched Data Network) DEC would be configured as a DTE.

!!! (Health) WARNING !!! 
This data should only serve as a guideline. Please ensure that the local 
System manager responsible for the Siemens/SNI part of the configuration 
checks the parameters in accordance with his software and hardware
configuration and of course using the Siemens/SNI supplied documentation.
No responsibility can be taken for any typographical errors herein, although
I would appreciate any feedback regarding improvements, errors etc. that 
you may have.


John


Case 1. Connection to #1 BS2000 host 
====================================

********************************************************************************

        XSYSP   PRONAM=FEPname          <= Processor name of the PDN system     
                                           see X25 - BS2000 parameters
                PRONR=                  <= Processor Nr. 
                ...     
        .
        .
        .
---DEC specific  start----------------------------------------------------------
********************************************************************************
* XLTNG macro describes line parameters
********************************************************************************

        XLTNG   LPUFADR=1F,             <= HW Adr. of Interface for this line
                EASS=0                  <= HW Adr. of I/O Backplane
                LPUFTYP=96520,          <= Inteface type; 96520 := 'Blockpuffer'
                DUETYP=TYP05,           <= Modem type e.g.
                                           TYP05 - leased line 9600 bit/s
                MODTAKT=JA,             <= defines clock source - 
                                           MODTAKT=JA - modem clock
                UEGSW=9600,             <= Transmission speed; NB. the parameter
                                           is necessary with the above interface
                                           even though the modem clock 
                                           determines in effect the speed
                UEPROZ=HDLC/LAPB,       <= defines Data Link Protocol type
                NRZI=NEIN,              <= defines the type of encoding
                                           (Non-Return-to-Zero-Inverted)
                UEWEG=X25/TYP6,         <= defines Transmisson type
                                           X25 - Packet Switched Digital Network
                                           TYP6 - DATEXP CCITT 1980
                DTEADR=452219991,       <= DTE Adr. of the PDN system including
                                           subadr.
                                           Equiv. to FTSIE 'HOST NAME' excluding
                                           the NAP name
                SKANALN=1-10,           <= X.25 Channels (SVC)
                VUEZEIT=60              <= Time-cutting value 60 secs
                                           
********************************************************************************
* XKNOT defines a logical or physical concentrator
********************************************************************************

        XKNOT   KNOTTYP=X25,            <= type 
                KNOTNAM=L1FX25,         <= concentrator name 
                STATNUM=90              <= station nr. (for internal use)

********************************************************************************
* XSTAT macro defines station specific parameters 
********************************************************************************
                
        XSTAT   STATNAM=L1FFT,          <= 'station' name of the DEC system. 
                                           to avoid confusion it is usually set
                                           equal to PRONAM of the DEC system 
                                           in the BS2000 network generation
                                           where there is a one to one 
                                           relationship between a BS2000 host 
                                           and a DEC/VAX system. 
                                           (see also Note below)
                STATTYP=RECHNER,        <= defines the station type
                                           The value RECHNER implies that there
                                           is no device specific protocol 
                                           associated with this 'station'.
                DTEADR=452115353,       <= DTE Adr. inc. subadr. of the DEC 
                                           system 
                                           Equiv. to DTE in VAX/P.S.I. and
                                           VOTS NAP subaddress
                PARTNAM=$BCAMNET,       <= defines the partner application
                                           with which the DEC 'station' is 
                                           going to communicate with
                PARTPRO=1/1,            <= defines the  network adr. of the 
                                           system (ie BS2000 host) on which the
                                           above application is going to reside 
                CONMODE=DYN,            <= defines that transport connections
                                           are assigned dynamically
                IX25=NEIN               <= defines that no X.25 Faclities
                                           are sent with the X.25 Call packet.
---DEC specific  end  ----------------------------------------------------------

                .
                .

NOTE:    
The above PDN system generation represents a one to one relationship between a 
BS2000 host and a DEC/VAX system. 



Case 2.   > #1 BS2000 hosts, PDN with X.25 Port < V3.0 
======================================================

If more than one BS2000 host has to be addressed from a DEC/VAX system the
X.25 PDN System generation is determined by the version of the X.25 Port
Software.

Versions V2.1 and V2.2 of the PDN X.25 Port Software required a one to one
relationship between a BS2000 host and a DEC/VAX system described by the XSTAT
macro in the PDN generation. This meant that in order to address more than one
BS2000 host one had to generate 'pseudo' DEC/VAX nodes from PDN's view of the
Network. 

Technically PDN determines the partner BS2000 host system dependent on
the 'calling DTE'.

Example Configuration: (Private network)
----------------------------------------
        
BS2000 Host H90-I               BS2000 Host 7580-S           BS2000 Host H90-I
-----------                     -----------                     -----------
| HR1P01  | /BCIN XTP1A,GEN=R,  | HR3P02  | /BCIN XTP1B,...     | HR3E03  |
| 00/001  |  ROUTE=DR1P01,      | 00/002  |        /BCIN XTP1C,.| 00/003  |
-----------  PROFIL=ISO,ADM=U   -----------                     -----------
     |                               |                               |
     |                               +-------------+  +--------------+  
PDN  |  VR-9688                                PDN |  | VR-9688
  --------                                       --------
  |VR1P01|                                       |VR3E01|
  |01/021|---------------------------------------|01/023|
  |      |                                       |      |
  --------                                       --------
     |
PDN  |  DSR-9667                        
  --------
  |DR1P01| DTEADR=00055001
  |02/051|
  |      | DTE
  --------
     |
   +---+  Modem  or Modem-Eliminator
   +---+
     |
     |
   +---+  Modem  
   +---+
     | DEC/VAX host                     VOTS - NAP Names 
----------                              X25_XTP1A with Subaddress 411
|        | DTEADR=00818110              X25_XTP1B with Subaddress 412
|        | DCE                          X25_XTP1C with Subaddress 413  
----------                
			                FTSIE - partner details
                                        symbolic name   host name
                                        HR1P01          X25_XTP1A%00055001
                                        HR3P02          X25_XTP1B%00055001
                                        HR3E03          X25_XTP1C%00055001

PDN system generation for above configuration
********************************************************************************

        XSYSP   PRONAM=DR1P01           <= Processor name of the PDN system     
                                           see X25 - BS2000 parameters
                PRONR=02/051            <= Processor Nr. 
                ...     
        XLTNG   LPUFADR=15              <= Line to PDN FEP VR1P01
        .
        XPRO    PRONAM=VR1P01           <= Processor name of the FEP
        .
        XPRO    PRONAM=HR1P01           <= Processor name of the Host
        .
        XPRO    PRONAM=HR3P02           <= Processor name of the Host
        .
        XPRO    PRONAM=HR3E03           <= Processor name of the Host
        .
---DEC specific  start----------------------------------------------------------
********************************************************************************
* XLTNG macro describes line parameters
********************************************************************************

        XLTNG   LPUFADR=1F,             <= HW Adr. of Interface for this line
                DTEADR=000550001,       <= DTE Adr. of the PDN system including
                                           subadr.
                                           Equiv. to FTSIE 'HOST NAME' excluding
                                           the NAP name
                SKANALN=1-10,           <= X.25 Channels (SVC)
                LPUFTYP=96520,          <= Inteface type; 96520 := 'Blockpuffer'
                MODTAKT=JA,             <= defines clock source - 
                                           MODTAKT=JA - modem clock
                UEGSW=9600,             <= Transmission speed; NB. the parameter
                                           is necessary with the above interface
                                           even though the modem clock 
                                           determines in effect the speed
                UEWEG=X25/TYP6,         <= defines Transmisson type
                                           X25 - Packet Switched Digital Network
                                           TYP6 - Profile DATEXP CCITT 1980
                DUETYP=TYP05,           <= Modem type e.g.
                                           TYP05 - leased line 9600 bit/s
                UEPROZ=HDLC/LAPB,       <= defines Data Link Protocol type
                EASS=0                  <= HW Adr. of I/O Backplane
                                           
********************************************************************************
* XKNOT defines a logical or physical concentrator
********************************************************************************

        XKNOT   KNOTTYP=X25,            <= type 
                KNOTNAM=L1FX25,         <= concentrator name 
                STATNUM=90              <= station nr. (for internal use)

********************************************************************************
* XSTAT macro defines station specific parameters 
********************************************************************************
        XSTAT   STATNAM=XTP1A,          <= 'station' name of the DEC system. 
                                           to avoid confusion it is usually set
                                           equal to PRONAM of the DEC system 
                                           in the BS2000 network generation
                                           where there is a one to one 
                                           relationship between a BS2000 host 
                                           and a DEC/VAX system. 
                                           (see also Note below)
                STATTYP=RECHNER,        <= defines the station type
                                           The value RECHNER implies that there
                                           is no device specific protocol 
                                           associated with this 'station'.
                DTEADR=00818110411,     <= DTE Adr. inc. subadr. of the DEC 
                                           system 
                                           Equiv. to DTE in VAX/P.S.I. and
                                           VOTS NAP subaddress
                PARTNAM=$BCAMNET,       <= defines the partner application
                                           with which the DEC 'station' is 
                                           going to communicate with
                PARTPRO=00/001,         <= defines the  network adr. of the 
                                           system (ie BS2000 host) on which the
                                           above application is going to reside 
                CONMODE=DYN,            <= defines that transport connections
                                           are assigned dynamically
                IX25=NEIN               <= defines that no X.25 Faclities
                                           are sent with the X.25 Call packet.
                        
        XSTAT   STATNAM=XTP1B,          <= 'station' name of the DEC system. 
                                           to avoid confusion it is usually set
                                           equal to PRONAM of the DEC system 
                                           in the BS2000 network generation
                                           where there is a one to one 
                                           relationship between a BS2000 host 
                                           and a DEC/VAX system. 
                                           (see also Note below)
                DTEADR=00818110412,     <= DTE Adr. inc. subadr. of the DEC 
                                           system 
                                           Equiv. to DTE in VAX/P.S.I. and
                                           VOTS NAP subaddress
                PARTPRO=00/002          <= defines the  network adr. of the 
                                           system (ie BS2000 host) on which the
                                           above application is going to reside 

        XSTAT   STATNAM=XTP1C,          <= 'station' name of the DEC system. 
                                           to avoid confusion it is usually set
                                           equal to PRONAM of the DEC system 
                                           in the BS2000 network generation
                                           where there is a one to one 
                                           relationship between a BS2000 host 
                                           and a DEC/VAX system. 
                                           (see also Note below)
                DTEADR=00818110413,     <= DTE Adr. inc. subadr. of the DEC 
                                           system 
                                           Equiv. to DTE in VAX/P.S.I. and
                                           VOTS NAP subaddress
                PARTPRO=00/003          <= defines the  network adr. of the 
                                           system (ie BS2000 host) on which the
                                           above application is going to reside 
                
---DEC specific  end  ----------------------------------------------------------


Case 3.   > #1 BS2000 hosts, PDN with X.25 Port = V3.0 
======================================================

In Versions V3.0 of the PDN X.25 Port Software a mechanism similar to the
destination database in VAX P.S.I. has been implemented. i.e the route is not
determined by the 'calling DTE' as in Case 2 but rather by the 'called DTE'.

As in a VAX P.S.I. destination database each BS2000 Host is allocated a
subaddress in the (connector-)PDN system. 

Using the above example. 

Example Configuration: (Private network)
----------------------------------------
        
BS2000 Host H90-I               BS2000 Host 7580-S           BS2000 Host H90-I
-----------                     -----------                     -----------
| HR1P01  |/BCIN XTP1A,GEN=R,   | HR3P02  |/BCIN XTP1A,....     | HR3E03  |
| 00/001  | ROUTE=DR1P01,       | 00/002  |     /BCIN XTP1A,....| 00/003  |
----------- PROFIL=ISO,ADM=U    -----------                     -----------
     |                               |                               |
     |                               +-------------+  +--------------+  
PDN  |  VR-9688                                PDN |  | VR-9688
  --------                                       --------
  |VR1P01|                                       |VR3E01|
  |01/021|---------------------------------------|01/023|
  |      |                                       |      |
  --------                                       --------
     |
PDN  |  DSR-9667                        
  --------
  |DR1P01| DTEADR=00055001000
  |02/051|
  |      | DTE
  --------
     |
   +---+  Modem  or Modem-Eliminator
   +---+
     |
     |
   +---+  Modem  
   +---+
     | DEC/VAX host                     VOTS - NAP Names 
----------                              X25_DATEXP with Subaddress 411
| XTP1A  | DTEADR=00818110      
|        | DCE                          
----------                              FTSIE - partner details
                                        symbolic name   host name
                                        HR1P01          X25_DATEXP%00055001001
                                        HR3P02          X25_DATEXP%00055001002
                                        HR3E03          X25_DATEXP%00055001003

PDN system generation for above configuration
********************************************************************************

        XSYSP   PRONAM=DR1P01           <= Processor name of the PDN system     
                                           see X25 - BS2000 parameters
                PRONR=02/051            <= Processor Nr. 
                ...     
        XLTNG   LPUFADR=15              <= Line to PDN FEP VR1P01
        .
        XPRO    PRONAM=VR1P01           <= Processor name of the FEP
        .
        XPRO    PRONAM=HR1P01           <= Processor name of the Host
        .
        XPRO    PRONAM=HR3P02           <= Processor name of the Host
        .
        XPRO    PRONAM=HR3E03           <= Processor name of the Host
        .
---DEC specific  start----------------------------------------------------------
********************************************************************************
* XLTNG macro describes line parameters
********************************************************************************

        XLTNG   LPUFADR=1F,             <= HW Adr. of Interface for this line
                DTEADR=000550001000,    <= DTE Adr. of the PDN system including
                                           subadr.
                SKANALN=1-10,           <= X.25 Channels (SVC)
                LPUFTYP=96520,          <= Inteface type; 96520 := 'Blockpuffer'
                MODTAKT=JA,             <= defines clock source - 
                                           MODTAKT=JA - modem clock
                UEGSW=9600,             <= Transmission speed; NB. the parameter
                                           is necessary with the above interface
                                           even though the modem clock 
                                           determines in effect the speed
                UEWEG=X25/TYP6,         <= defines Transmisson type
                                           X25 - Packet Switched Digital Network
                                           TYP6 - Profile DATEXP CCITT 1980
                DUETYP=TYP05,           <= Modem type e.g.
                                           TYP05 - leased line 9600 bit/s
                UEPROZ=HDLC/LAPB,       <= defines Data Link Protocol type
                EASS=0,                 <= HW Adr. of I/O Backplane
                EXTTAB=VAXTAB           <= reference by name to the database
                                           relationship between Host system and
                                           subaddress is set (s. Macro XPATB)
********************************************************************************
* XKNOT defines a logical or physical concentrator
********************************************************************************

        XKNOT   KNOTTYP=X25,            <= type 
                KNOTNAM=L1FX25,         <= concentrator name 
                STATNUM=90              <= station nr. (for internal use)

********************************************************************************
* XSTAT macro defines station specific parameters 
********************************************************************************
        XSTAT   STATNAM=XTP1A,          <= 'station' name of the DEC system. 
                                           to avoid confusion it is usually set
                                           equal to PRONAM of the DEC system 
                                           in the BS2000 network generation
                STATTYP=RECHNER,        <= defines the station type
                                           The value RECHNER implies that there
                                           is no device specific protocol 
                                           associated with this 'station'.
                DTEADR=00818110411,     <= DTE Adr. inc. subadr. of the DEC 
                                           system 
                                           Equiv. to DTE in VAX/P.S.I. and
                                           VOTS NAP subaddress
                CONMODE=DYN,            <= defines that transport connections
                                           are assigned dynamically
                IX25=(EXTADR)           <= indicates that subadressing is being
                                           used
                                                                   

        XPATB   TABNAM=VAXTAB,          <= name of the database or table
                EXTZIFF=3,              <= defines the length of the subaddress
                TABART=EXT,             <= type of table
                P0=*001/001/00/$BCAMNET,<= relationship subadddr. - host system
                P1=*002/002/00/$BCAMNET,<= relationship subadddr. - host system
                P2=*003/003/00/$BCAMNET <= relationship subadddr. - host system

---DEC specific  end  ----------------------------------------------------------