If you are using a Barr SNA or SNA connection,
you must configure VTAM. Configuring VTAM is not necessary for CTC connections.
For each Barr node, your host programmer must enter the following LU definitions in an existing PU definition. The host programmer must also create a logmode table entry and activate the VTAM PU. If you are using an HPR/IP (Enterprise Extender) connection, you must also configure TCP/IP and a VTAM major node definition.
If you are using a Barr SNA or SNA connection,
you must configure VTAM. Configuring VTAM is not necessary for CTC connections.
Configure TCP/IP and VTAM (HPR/IP only)
Sample PU definitions
Enter the following LU macro An instruction in a source language that points to a sequence of instructions in the same language to replace it. and add the following parameters to your PU definition.
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PU |
puname |
ADDR=01,IDBLK=03D,DATMODE=FULL,IDNUM=12345, |
X |
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MAXDATA=1033,MAXOUT=7, |
X |
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PACING=7,VPACING=7,MODETAB=YOURMODT |
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luname |
LU |
LOCADDR=n,USSTAB=,DLOGMOD=BARRMOD |
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Parameter |
Description |
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IDBLK=bbb |
Use these parameters to identify the remote’s PU definition. During Xid negotiation, the remote sends an Exchange ID that contains the IDBLK and IDNUM parameters. VTAM searches for the PU identified by IDBLK and IDNUM and uses this PU for the rest of the communications session. |
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MAXDATA=265|521|1033|2057 |
The maximum amount of data you can send on the PU in one frame. This value includes nine bytes of header information plus the data length. The default value is 1033. To maximize performance, you can increase throughput by sending larger frames of data. Send 1024 bytes by setting MAXDATA to 1033 in the VTAM PU definition on the HPR/IP Connection Configuration dialog box. This step reduces the amount of control information and total number of frames sent. Setting MAXDATA to 2057 can result in greater system throughput, but it is not recommended for Ethernet or other LAN equipment that will not support the larger packet size. |
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MODETAB=YOURMODT |
Replace YOURMODT with your system's mode table. |
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luname |
Enter the LU name for the NJE LU. This value must match the APPLID in JES2 or POWER configuration. This must also match the NJE LU name specified when configuring NJE for Barr SNA or SNA and the SNA gateway. |
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LOCADDR=n |
Enter a valid local address from 1 to 255. This value must match the NJE LU number specified when configuring NJE for Barr SNA or SNA and the SNA gateway. |
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USSTAB= |
The Barr NJE LU does not support SSCP message traffic. By specifying USSTAB= with no parameter, the traffic is not sent. |
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DLOGMOD=BARRMOD |
Replace BARRMOD with the logmode table entry to use by default. This will match the LOGMODE parameter in the logmode table entry. See the following example. |
Set pacing and max VTAM framesizes in the BARRMOD logmode table entry. Enter the following commands at your host console.
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BARRMOD |
MODEENT |
LOGMODE=BARRMOD,FMPROF=X'03',TSPROF=X'03', |
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PRIPROT=X'72',SECPROT=X'72',COMPROT=X'4020', |
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RUSIZES=X'0000',PSERVIC=X'000000000000000000000000', |
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APPNCOS=#CONNECT,SRCVPAC=X'07',SSNDPAC=X'07', |
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PSNDPAC=X'07',TYPE=X'01', |
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Parameter |
Description |
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LOGMODE=BARRMOD |
The logmode entry name. Replace BARRMOD with the DLOGMOD value in the PU definition shown above. This is a required value. |
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FMPROF |
The function management (FM) profile. This is a required value and will not change. |
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TSPROF |
The transmission services profile. This is a required value that will not change. |
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PRIPROT |
The FM primary LU protocols. This is a required value and will not change. |
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SECPROT |
The FM secondary LU protocols. This is a required value and will not change. |
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COMPROT |
The common LU protocols. This is a required value and will not change. |
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RUSIZES |
The SNA frame size. Setting the RUSIZES entry to zeros allows VTAM to use the maximum size. This is a required value. |
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PSERVIC |
The LU presentation services profile. This is a required value and will not change. |
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SRCVPAC |
The secondary receive pacing count. This is a required value and will not change. |
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SSNDPAC |
The secondary send pacing count. This is a required value and will not change. |
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PSNDPAC |
The primary send pacing count. This is a required value and will not change. |
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TYPE |
Indicates the bind is non-negotiable. This is a required value and will not change. |
Enter the following commands at your host console.
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v net,inact,id=VTAMMEMBER |
Where VTAMMEMBER is the library member that contains the PU definition.