Intercommunication

Establishing an LU 6.2 connection

This example is for a connection to an OS/2 system. The steps are the same whatever platform you are using; change the values as appropriate.

Defining a connection

At a CICS command line type CEDA DEF CONN(connection name) GROUP(group name) (where connection name is (6) and group name is (7)). For example:
```
CEDA DEF CONN(OS2) GROUP(EXAMPLE)
```

Press Enter to define a connection to CICS.

+--------------------------------------------------------------------------------+
|  DEF CONN(OS2) GROUP(EXAMPLE)                                                  |
|  OVERTYPE TO MODIFY                                                            |
|   CEDA  DEFine                                                                 |
|    Connection     : OS2                                                        |
|    Group          : EXAMPLE                                                    |
|    DEscription  ==>                                                            |
|   CONNECTION IDENTIFIERS                                                       |
|    Netname      ==> OS2LU                                                      |
|    INDsys       ==>                                                            |
|   REMOTE ATTRIBUTES                                                            |
|    REMOTESystem ==>                                                            |
|    REMOTEName   ==>                                                            |
|   CONNECTION PROPERTIES                                                        |
|    ACcessmethod ==> Vtam               Vtam | IRc | INdirect | Xm              |
|    Protocol     ==> Appc               Appc | Lu61                             |
|    SInglesess   ==> No                 No | Yes                                |
|    DAtastream   ==> User               User | 3270 | SCs | STrfield | Lms      |
|    RECordformat ==> U                  U | Vb                                  |
|   OPERATIONAL PROPERTIES                                                       |
| +  AUtoconnect  ==> Yes                No | Yes | All                          |
|   I New group EXAMPLE created.                                                 |
|                                                                                |
|   DEFINE SUCCESSFUL                            TIME:  16.49.30  DATE: 96.054   |
| PF 1 HELP 2 COM 3 END             6 CRSR 7 SBH 8 SFH 9 MSG 10 SB 11 SF 12 CNCL |
+--------------------------------------------------------------------------------+

On the panel change the Netname field in the CONNECTION IDENTIFIERS section to be the LU name ((9)) of the target system.
In the CONNECTION PROPERTIES section set the ACcessmethod field to Vtam and the Protocol to Appc.
Press Enter to make the change.

Defining a session

At a CICS command line type CEDA DEF SESS(session name) GROUP(group name) (where session name is (8) and group name is (7)). For example:
```
CEDA DEF SESS(OS2SESS) GROUP(EXAMPLE)
```

Press Enter to define a session for the connection.

+--------------------------------------------------------------------------------+
|  DEF SESS(OS2SESS) GROUP(EXAMPLE)                                              |
|  OVERTYPE TO MODIFY                                                            |
|   CEDA  DEFine                                                                 |
|    Sessions     ==> OS2SESS                                                    |
|    Group        ==> EXAMPLE                                                    |
|    DEscription  ==>                                                            |
|   SESSION IDENTIFIERS                                                          |
|    Connection   ==> OS2                                                        |
|    SESSName     ==>                                                            |
|    NETnameq     ==>                                                            |
|    MOdename     ==> #INTER                                                     |
|   SESSION PROPERTIES                                                           |
|    Protocol     ==> Appc               Appc | Lu61                             |
|    MAximum      ==> 008 , 004          0-999                                   |
|    RECEIVEPfx   ==>                                                            |
|    RECEIVECount ==>                    1-999                                   |
|    SENDPfx      ==>                                                            |
|    SENDCount    ==>                    1-999                                   |
|    SENDSize     ==> 04096              1-30720                                 |
| +  RECEIVESize  ==> 04096              1-30720                                 |
|   S CONNECTION MUST BE SPECIFIED.                                              |
|                                                                                |
|                                          TIME:  14.23.19   DATE:  96.054       |
| PF 1 HELP 2 COM 3 END             6 CRSR 7 SBH 8 SFH 9 MSG 10 SB 11 SF 12 CNCL |
+--------------------------------------------------------------------------------+

In the SESSION IDENTIFIERS section of the panel specify the Connection name ((6)) in the Connection field and set the MOdename to #INTER.
In the SESSION PROPERTIES section set the Protocol to Appc and the MAximum field to 008 , 004.

Installing the new group definition

At a CICS command line type CEDA INS GROUP(group name) (7).
Press Enter to install the new group definition.
Note:
If this connection group is already in use you may get severe errors reported. If this happens, take the existing connections out of service, retry the above group installation, and then set the connections in service using the following commands:
1. CEMT I CONN
2. CEMT S CONN(*) OUTS
3. CEDA INS GROUP(group name)
4. CEMT S CONN(*) INS

What next?

The LU 6.2 connection is now established. You are ready to complete the configuration. Go to MQSeries for VSE/ESA configuration.