gtps2m45 | ACF/SNA Data Communications Reference |
Use the ZNPIU command to display the PIU trace table online. You can display all of the PIU trace table or only part of the PIU trace table. You can also display the HPR control messages in the PIU trace table and specify the format in which you want to display the PIU trace table.
Enter the ZNPIU command with the ALL parameter specified to display all of the PIU trace table entries. When you display all of the PIU trace table entries, the oldest entry (that is, the entry with the oldest time stamp) is displayed first, followed by the next oldest entry, and so on. Therefore, the last entry displayed is the newest entry in the PIU trace table.
You can also enter the ZNPIU command and specify the number of PIU trace table entries that you want to display. When you do this, the newest entries in the PIU trace table are displayed. For example, if you specify that you want to display only 11 entries from the PIU trace table, the 11 newest entries are displayed.
Keep in mind that the PIU trace facility can continue to store new data in the PIU trace table while you are displaying entries from the PIU trace table. Therefore, the newest entries continue to change as more data is stored in the PIU trace table. For example, if you display 11 entries from the PIU trace table, wait a few seconds while data continues to flow and then display 11 entries from the PIU trace table again, the 11 entries displayed the second time are different from the 11 entries displayed the first time.
Enter the ZNPIU command with the CONTROL parameter specified to include HPR control messages in the information that is displayed. An HPR control message is an NLP that contains a network layer header (NHDR) and transport header (THDR), but no data. If you do not specify the CONTROL parameter, the HPR control messages are not displayed.
When you enter the ZNPIU command to display the PIU trace table, the last line of the information displayed tells you how many entries are in the PIU trace table. This number includes HPR control messages. Remember that HPR control messages are included in the information displayed only when you specify the CONTROL parameter. Therefore, if the PIU trace table contains only HPR control messages and you enter the ZNPIU command without the CONTROL parameter, no entries are displayed. However, the number of entries in the PIU trace table is displayed.
There are two formats in which you can display the PIU trace table. You can create a compacted display of the PIU trace table or a formatted display of the PIU trace table.
To create a compacted display of the PIU trace table, enter the ZNPIU command with the COMPACT parameter specified; also specify the CONTROL parameter if you want to include HPR control messages in the information that is displayed. See TPF Operations for more information about the ZNPIU command.
In the compacted display of the PIU trace table, each PIU trace table entry is displayed on a separate line and only part of the RU being traced is included. Different information is displayed depending on whether the PIU trace table entry is for an FID4 PIU, FID2 PIU, NLP, or 8-byte CTC header.
Figure 95 shows an example of a compacted display of the PIU trace table. The header in the information shown contains three lines. The first line describes the information displayed for an FID4 PIU. The second line describes the information displayed for an FID2 PIU. The third line describes the information displayed for an NLP.
The example shows four entries in the PIU trace table. The entries are displayed in the following order:
Figure 95. Compacted Display of the PIU Trace Table
+--------------------------------------------------------------------------------+ |User: ZNPIU COMPACT 4 | | | |System: NPIU0004I 17.36.50 PIU TRACE TABLE | | RW IN DRID ORID DNA ONA VRSQ SEQ CNT RH RU | | RW IN DRID ORID LNKHDR TH SID SEQ RH RU | | RW IN DRID ORID RTP PCID SEQ RH RU | | 32 02 000002 00000F 0B0000 1F0000 0000 0000 0018 2B0000 0F00000100000000| | 52 01 000070 000136 00100000 2F00 0101 0000 830100 000001 | | 31 01 000204 00023E 000001 E383BE95283C9EC8 0001 EB8000 A1 | | 05 0B 003F0001055E0544| | 35 PIUS IN TRACE TABLE | +--------------------------------------------------------------------------------+
See IBM Systems Network Architecture Network Product Formats for more information about PIU and NLP formats.
To create a formatted display of the PIU trace table, enter the ZNPIU command with the FORMAT or LONG parameter specified; also specify the CONTROL parameter if you want to display the HPR control messages.
For the formatted display of the PIU trace table, you can also specify the HEADERS parameter to display the NHDR and THDR for the NLPs in the PIU trace table. If you do not specify the HEADERS parameter, the NHDR and THDR are not displayed. Be sure to specify the HEADERS parameter when you specify the CONTROL parameter (because HPR control messages contain only an NHDR and a THDR).
You can also specify the NODATA parameter if you do not want to display the RU for PIUs and NLPs. This can be useful when you want to view control data at the RTP connection level. If you do not specify the NODATA parameter, the RU is displayed.
See TPF Operations for more information about the ZNPIU command.
In the formatted display of the PIU trace table, each PIU trace table entry is formatted and the entire RU being traced is displayed (if you did not specify the NODATA parameter). In addition, the RH indicators and THDR optional segments (for NLPs) are translated and displayed for you.
Different information is displayed depending on whether the PIU trace table entry is for an FID4 PIU, FID2 PIU, NLP, or 8-byte CTC header.
Figure 96 shows an example of a formatted display of the PIU trace table. The entries are displayed in the following order:
Figure 96. Formatted Display of the PIU Trace Table
+--------------------------------------------------------------------------------+ |User: ZNPIU FORMAT 4 HEADERS | | | |System: NPIU0005I 09.52.59 PIU TRACE TABLE | | RWI-06 CCW-0B DNAME- TPFA ONAME- TPFB | | PCID-0000000000000000 TIME-54.24 DRID-000001 ORID-000002 | | DNA-0A0000 ONA-0B0001 ERVR-0001 VRSQ-0005 SEQ-0001 CNT-0020 RH-EB8000| | RU-ACTCDRM RH INDICS- RSP SC FI PRSP | | 0 0 14021111 40404040 40404040 05000000 ........ .......| | 16 10 000B3F06 0600274E B40020FE 00 ........ ..... | | RWI-51 CCW-01 DNAME- VTAMNET.VTAM2 ONAME- APPC | | PCID-C43E70C65E829A43 TIME-53.56 DRID-800002 ORID-000102 | | LNKHDR-00FE0000 TH-2C00 SID-0101 SEQ-0023 RH-0B9081 | | RU- RH INDICS- REQ FMD FI OIC ER BB CEB | | 0 0 0E0502FF 0003D000 000422F0 F0F30027 ........ ...003..| | 16 10 12C48000 00000018 60E383BE 953FE66D .D...... -T....W.| | 32 20 F40DE5E3 C1D4D5C5 E34BE5E3 C1D4F206 4.VTAMNE T.VTAM2.| | 48 30 81000201 31004712 CA0580C1 0000103C ........ ...A....| | 64 40 00F4E5E3 C1D4D5C5 E34BC1D7 D7C3103D .4VTAMNE T.APPC..| | 80 50 00F3E5E3 C1D4D5C5 E34BC7D4 E3F10326 .3VTAMNE T.GMT1..| | 96 60 DA093E07 8080FFFF FFFF1282 00F3E5E3 ........ .....3V| | 112 70 C1D4D5C5 E34BD3C3 D3F8C4C4 007512C5 AMNET.LC L8DD...| | 128 80 00040180 000008E2 F3F2F7F0 40404000 .......S 3270....| | 144 90 000C2C01 087BC3D6 D5D5C5C3 E3144612 ......CO NNECT...| | 160 A0 80150DE5 E3C1D4D5 C5E34BE5 E3C1D4F2 ...VTAMN ET.VTAM| | 176 B0 21164700 00000098 2D000000 00000000 ........ ........| | 192 C0 00017100 00000014 46128016 0DE5E3C1 ........ .....VT| | 208 D0 D4D5C5E3 4BE5E3C1 D4F22116 47000000 MNET.VTA M2......| | 224 E0 00882D00 00000000 00000001 71000000 ........ ........| | 240 F0 00 . | | RWI-32 CCW-01 DNAME- GMT1 ONAME- VTAMNET.LCL8DD | | PCID-E383BE953FE66DF4 TIME-54.00 DRID-000204 ORID-00023E | | LNKHDR-009D0000 TCID1-2D105A9AC4000008 TCID2-020DFB2D00000317 SEQ-023| | RTP-000008 SA1-30C480EEBD5EB606 SA2-0000000000000000 BSN-00000000 | | NHDR | | 0 0 C208DAFF 00 B.... | | THDR SEGMENTS- CIE ARB | | 0 0 2D105A9A C4000008 3804000B 00000068 ....D... ........| | 16 10 00000000 03228000 000A8F20 00000000 ........ ........| | 32 20 03100000 820DFB2D 00000317 ........ .... | | FID5-5D00023E30C480EEBD5EB606 RH-EB8000 | | RU-BIND RH INDICS- RSP SC FI PRSP | | 0 0 31010000 00008002 0000B700 80000000 ........ ........| | 16 10 00000000 00000000 00000000 00000060 ........ .......| | 32 20 16E383BE 953FE66D F40DE5E3 C1D4D5C5 .T....W. 4.VTAMN| | 48 30 E34BE5E3 C1D4F262 08800000 00060000 T.VTAM2. ........| | 64 40 032B1601 01144612 80150DE5 E3C1D4D5 ........ ...VTAM| | 80 50 C5E34BE5 E3C1D4F2 21 ET.VTAM2 . | | RWI-06 CCW-0B CTC HDR-003A00010205024D | | 426 PIUS IN TRACE TABLE | +--------------------------------------------------------------------------------+
See IBM Systems Network Architecture Network Product Formats for more information about PIU and NLP formats.