








	*SMF Tools*

SMF Type 119 Record - Subtype 1

This table shows the record layout for type 119 SMF records
(TCP/IP Statistics - TCP Connection Initiation Record).

List of other SMF record layouts available.
List of sample SMF reports.

Purpose: Transmission Control Protocol/Internet Protocol (TCP/IP) writes type 119 records to collect statistics about Telnet servers and clients, FTP servers and clients, and API activity and stack usage information.

SMF type 119 records contain unique stack identification sections designed to eliminate the confusion of the type 118 records. They provide uniformity of date and time (UTC), common record format (self-defining section and TCP/IP identification section), and support for IPv6 addresses and expanded field sizes (64 bit versus 32 bit) for some counters. The kinds of SMF type 119 records available are:

TCP connection initiation and termination
UDP socket close
TCP/IP, interface and server port statistics
TCP/IP stack start/stop
FTP server transfer completion
FTP server logon failure
FTP client transfer completion
TN3270E Telnet server session initiation and termination
Telnet client connection initiation and termination
IKE tunnel activation, refresh, and expire
Dynamic tunnel activation, refresh, installation, and removal
Manual tunnel activation and deactivation

The SMF type 119 records utilize a common structure. Each record is organized as follows:

SMF header
Self-defining section containing pointers to:
- TCP/IP identification section (identifies system, stack etc)
- Sections containing the data for the record

The Subtype 1 TCP connection Initiation record is collected whenever a TCP connection is opened. This record contains pertinent information about the connection available at the time of its opening.

Guidelines:
* Because this information is duplicated in the TCP connection termination record, which contains additional information, you should only collect the TCP connection termination record.
* Because this record is generated for every single TCP connection, this can generate significant load on a server and rapidly fill the SMF data sets. Exercised when you use it. The TCP connection termination record is collected whenever a TCP connection is closed or aborted. This record contains all pertinent information about the connection, such as elapsed time, bytes transferred, and so on.

It's easy to report on SMF 119 data! (Jump to sample reports)

We have a low-cost 4GL report writer especially for SMF files. It's called Spectrum SMF Writer.

Spectrum SMF Writer handles the difficult SMF record parsing for you automatically. You just specify which fields you want to see.

Spectrum SMF Writer also converts the arcane date and time fields and reformats them into an attractive report.

Plus, Spectrum SMF Writer can export SMF data as comma delimited files to use on your PC.

SMF Type 119 Record -- TCP/IP Statistics - TCP Connection Initiation Record
Offset (Dec.)	Offset (Hex)	Name	Length	Format	Description
0	0	SMF119LEN	2	binary	Record length. This field and the next field (total of four bytes) form the RDW (record descriptor word). See “Standard SMF Record Header” on page 13-1 for a detailed description.
2	2	SMF119SEG	2	binary	Segment descriptor (see record length field).
4	4	SMF119FLG	1	binary	System indicator Bit Meaning When Set 0 New record format 1 Subtypes used 2 Reserved. 3-6 Version indicators* 7 System is running in PR/SM mode.*See “Standard SMF Record Header” on page 13-1 for a detailed description.
5	5	SMF119RTY	1	binary	Record type 119 (X'77').
6	6	SMF119TME	4	binary	Time since midnight, in hundredths of a second, that the record was moved into the SMF buffer.
10	A	SMF119DTE	4	packed	Date when the record was moved into the SMF buffer, in the form 0cyydddF. See “Standard SMF Record Header” on page 13-1 for a detailed description.
14	E	SMF119SID	4	EBCDIC	System identification (from the SMFPRMxx SID parameter).
18	12	SMF119SSI	4	EBCDIC	Subsystem identification.
22	16	SMF119STY	2	binary	Record subtype.
Self Defining Section
24	18	SMF119TRN	2	binary	Number of triplets in this record. A triplet is a set of three SMF fields (offset/length/number values) that defines a section of the record. The offset is the offset from the RDW.
26	1A	--	2	binary	Reserved.
28	1C	SMF119IDOff	4	binary	Offset to TCP/IP identification section from RDW.
32	20	SMF119IDLen	2	binary	Length of TCP/IP identification section.
34	22	SMF119IDNum	2	binary	Number of TCP/IP identification sections.
36	24	SMF119S1Off	4	Binary	Offset to first data section
40	28	SMF119S1Len	2	Binary	Length of first data section
42	2A	SMF119S1Num	2	Binary	Number of first data sections
44	2C	SMF119S2Off	4	Binary	Offset to 2nd data section
48	30	SMF119S2Len	2	Binary	Length of 2nd data section
50	32	SMF119S2Num	2	Binary	Number of 2nd data sections
52	34	SMF119S3Off	4	Binary	Offset to 3rd data section
56	38	SMF119S3Len	2	Binary	Length of 3rd data section
58	3A	SMF119S3Num	2	Binary	Number of 3rd data sections
60	3C	SMF119S4Off	4	Binary	Offset to 4th data section
64	40	SMF119S4Len	2	Binary	Length of 4th data section
66	42	SMF119S4Num	2	Binary	Number of 4th data sections
68	44	SMF119S5Off	4	Binary	Offset to 5th data section
72	48	SMF119S5Len	2	Binary	Length of 5th data section
74	4A	SMF119S5Num	2	Binary	Number of 5th data sections
76	4C	SMF119S6Off	4	Binary	Offset to 6th data section
80	50	SMF119S6Len	2	Binary	Length of 6th data section
82	52	SMF119S6Num	2	Binary	Number of 6th data sections
TCP/IP Identification Section For the TCP/IP connection initiation record, the TCP/IP stack identification section indicates TCP as the subcomponent and X'08' (event record) as the record reason. (Offset from beginning of record: SMF119IDOff)
0	0	SMF119TI_ SYSName	8	EBCDIC	System name from SYSNAME in IEASYSxx
8	8	SMF119TI_ SysplexName	8	EBCDIC	Sysplex name from SYSPLEX in COUPLExx
16	10	SMF119TI_ Stack	8	EBCDIC	TCP/IP stack name
24	18	SMF119TI_ ReleaseID	8	EBCDIC	z/OS Communications Server TCP/IP release identifier
32	20	SMF119TI_ Comp	8	EBCDIC	TCP/IP subcomponent (right padded with blanks): FTPC FTP Client FTPS FTP server IP IP layer STACK Entire TCP/IP stack TCP TCP layer TN3270C TN3270 Client TN3270S TN3270 server UDP UDP layer
40	28	SMF119TI_ ASName	8	EBCDIC	Started task qualifier or address space name of address space that writes this SMF record
48	30	SMF119TI_ UserID	8	EBCDIC	User ID of security context under which this SMF record is written
56	38	--	2	EBCDIC	Reserved
58	3A	SMF119TI_ ASID	2	Binary	ASID of address space that writes this SMF record
60	3C	SMF119TI_ Reason	1	Binary	Reason for writing this SMF record: X'08' Event record X'C0' Interval statistics record, more records follow X'80' Interval statistics record, last record in set X'60' End-of-statistics record, more records follow X'20' End-of-statistics record, last record in set X'50' Shutdown starts record, more records follow X'10' Shutdown starts record, last record in set
61	3D	--	3	EBCDIC	Reserved
Subtype 1 - TCP Connection Initiation Section The TCP connection Initiation record is collected whenever a TCP connection is opened. This record contains pertinent information about the connection available at the time of its opening. (Offset from beginning of record: SMF119S1Off)
0	0	SMF119AP_ TIRName	8	EBCDIC	TCP socket resource name (Address space name of address space that established this TCP connection)
8	8	SMF119AP_ TIConnID	4	Binary	TCP socket resource ID (connection ID)
12	C	SMF119AP_ TIRsv1	4	Binary	Reserved
16	10	SMF119AP_ TISubTask	4	Binary	Subtask Name (Address of MVS™ TCB for the task that owns this connection. Note that this is not the subtask value specified on an INITAPI call.)
20	14	SMF119AP_ TIRIP	16	Binary	Remote IP address at time of connection open
36	24	SMF119AP_ TILIP	16	Binary	Local IP address at time of connection open
52	34	SMF119AP_ TIRPort	2	Binary	Remote port number at time of connection open
54	36	SMF119AP_ TILPort	2	Binary	Local port number at time of connection open
56	38	SMF119AP_ TITime	4	Binary	Time of day of connection establishment
60	3C	SMF119AP_ TIDate	4	Packed	Date of connection establishment
64	40	SMF119AP_ TISTCK_ T	8	Binary	STCK of connection establishment - time
64	40	SMF119AP_ TISTCK_ D	8	Binary	STCK of connection establishment - date

The table above is based on the description provided by IBM in its "MVS Systems Management Facilities (SMF)" manual.

Spectrum SMF Writer - the 4GL SMF Report Writer.

Sample Report from SMF 119 Subtype 2 Records
Showing Information about TCP Connections

The sample SMF report below was created with Spectrum SMF Writer, the low-cost 4GL SMF report writer.

In this report, we read as input the SMF file and select just the type 119 subtype 2 TCP Connection Termination records. (See SMF 119 Subtype 2 record layout.) The report shows information about terminated TCP connections, including start time, end time and computed elapsed time. It also shows the total number of bytes sent and received during the connection and the termination code. Our record layout also expands the 1-byte termination code into a readable descriptive text. The report is grouped by TCP/IP Stack and Resource. The report includes subtotals for each Resource.

All of this with just a few lines of code!
Why not install a Spectrum SMF Writer trial right now and start making your own SMF reports!

These Spectrum SMF Writer Statements:


INPUT:  SMF119 LIST(YES)

INCLUDEIF: SMF119RTY=119 AND SMF119STY=2

COMPUTE: MY_DURATION(2) = #MAKETIME(
               ((#MAKENUM(SMF119AP_TTEDATE) * 86400)
                  + #MAKENUM(SMF119AP_TTETIME))
             - ((#MAKENUM(SMF119AP_TTSDATE) * 86400)
                  + #MAKENUM(SMF119AP_TTSTIME))
                                   )

TITLE: 'Z/OS TCP DAILY CONNECTIONS REPORT'
TITLE: 'SYSTEM:' SMF119TI_SYSNAME
       'SYSPLEX:' SMF119TI_SYSPLEXNAME
       'STACK:' SMF119TI_STACK
TITLE: 'SORTED BY STACK AND RESOURCE NAME'

COLUMNS: SMF119AP_TTRNAME('RESOURCE')
         SMF119AP_TTSDATE('DATE/STARTED')
         SMF119AP_TTSTIME('TIME/STARTED')
         SMF119AP_TTEDATE('DATE/ENDED')
         SMF119AP_TTETIME('TIME/ENDED')
         MY_DURATION('CONNECTION/DURATION/HH:MM:SS.SS' ACCUM
                     TP'ZZ:ZZ:Z9.99')
         SMF119AP_TTINBYTES('INBOUND/BYTES')
         SMF119AP_TTOUTBYTES('OUTBOUND/BYTES')
         SMF119AP_TTTERMCODE(HEX 'TERM/CODE')
         SMF119AP_TTTERMCODE_DESC('TERM CODE DESC')

SORT:    SMF119TI_STACK
         SMF119AP_TTRNAME
         SMF119AP_TTSDATE
         SMF119AP_TTSTIME

BREAK:   SMF119AP_TTRNAME

Produce This SMF Report:


                                              Z/OS TCP DAILY CONNECTIONS REPORT
                                    SYSTEM: ST1      SYSPLEX: SYPROD    STACK: S01QDAS
                                             SORTED BY STACK AND RESOURCE NAME

                                                    CONNECTION
            DATE      TIME       DATE      TIME      DURATION      INBOUND        OUTBOUND    TERM
 RESOURCE STARTED    STARTED    ENDED      ENDED    HH:MM:SS.SS     BYTES          BYTES      CODE     TERM CODE DESC
 ________ ________ ___________ ________ ___________ ___________ ______________ ______________ ____ _______________________

 FTPTA5   03/21/09 14:04:06.81 03/21/09 14:04:07.46        0.65        257,537          3,052  61  CLIENT SENT RESET
 FTPTA5   03/21/09 14:05:35.59 03/21/09 14:05:45.67       10.08         27,043            329  52  APPL ISSUED CLOSE
 FTPTA5   03/21/09 14:12:13.81 03/21/09 14:12:14.51        0.70        257,537          3,052  61  CLIENT SENT RESET
 FTPTA5   03/21/09 14:12:27.35 03/21/09 14:12:37.42       10.07         27,043            329  52  APPL ISSUED CLOSE
 FTPTA5   03/21/09 15:30:34.96 03/21/09 15:30:35.64        0.68        257,537          3,052  61  CLIENT SENT RESET
 FTPTA5   03/21/09 15:35:13.92 03/21/09 15:35:24.00       10.08         27,043            329  52  APPL ISSUED CLOSE
 *** TOTAL FOR FTPTA5   (    6 ITEMS)                     32.26        853,740         10,143
 
 FTPTA6   03/21/09 14:05:38.03 03/21/09 14:05:38.70        0.67        257,537          3,052  61  CLIENT SENT RESET
 FTPTA6   03/21/09 14:07:23.60 03/21/09 14:07:33.68       10.08         27,043            329  52  APPL ISSUED CLOSE
 FTPTA6   03/21/09 14:12:29.83 03/21/09 14:12:30.50        0.67        257,537          3,052  61  CLIENT SENT RESET
 FTPTA6   03/21/09 14:17:10.02 03/21/09 14:17:20.16       10.14         27,043            329  52  APPL ISSUED CLOSE
 FTPTA6   03/21/09 15:35:16.45 03/21/09 15:35:17.21        0.76        257,537          3,052  61  CLIENT SENT RESET
 FTPTA6   03/21/09 15:36:15.10 03/21/09 15:36:25.18       10.08         27,043            329  52  APPL ISSUED CLOSE
 *** TOTAL FOR FTPTA6   (    6 ITEMS)                     32.40        853,740         10,143
 
 FTPTA7   03/21/09 14:07:26.16 03/21/09 14:07:26.86        0.70        257,537          3,052  61  CLIENT SENT RESET
 FTPTA7   03/21/09 14:08:24.36 03/21/09 14:08:34.50       10.14             70            507  52  APPL ISSUED CLOSE
 FTPTA7   03/21/09 14:17:12.60 03/21/09 14:17:13.31        0.71        257,537          3,052  61  CLIENT SENT RESET
 FTPTA7   03/21/09 14:21:40.01 03/21/09 14:21:50.08       10.07         27,043            329  52  APPL ISSUED CLOSE
 FTPTA7   03/21/09 15:36:17.53 03/21/09 15:36:18.17        0.64        257,537          3,052  61  CLIENT SENT RESET
 FTPTA7   03/21/09 15:37:11.45 03/21/09 15:37:21.53       10.08         27,043            329  52  APPL ISSUED CLOSE
 *** TOTAL FOR FTPTA7   (    6 ITEMS)                     32.34        826,767         10,321
 
 FTPTA8   03/21/09 08:09:32.96 03/21/09 15:29:02.41  7:19:29.45        274,763         15,912  52  APPL ISSUED CLOSE
 FTPTA8   03/21/09 13:17:39.42 03/21/09 14:42:50.82  1:25:11.40         47,498          2,291  52  APPL ISSUED CLOSE
 FTPTA8   03/21/09 14:42:57.42 03/21/09 14:43:21.38       23.96         45,921          2,291  52  APPL ISSUED CLOSE
 FTPTA8   03/21/09 14:43:26.45 03/21/09 15:28:27.01    45:00.56         47,498          2,291  52  APPL ISSUED CLOSE
 FTPTA8   03/21/09 14:50:01.00 03/21/09 15:28:26.10    38:25.10         35,513          1,537  52  APPL ISSUED CLOSE
 FTPTA8   03/21/09 14:51:01.03 03/21/09 14:52:28.82     1:27.79         33,273            875  52  APPL ISSUED CLOSE
 FTPTA8   03/21/09 14:53:05.50 03/21/09 15:28:22.53    35:17.03         33,273            875  52  APPL ISSUED CLOSE
 FTPTA8   03/21/09 14:53:51.74 03/21/09 14:55:51.42     1:59.68         35,306          1,537  52  APPL ISSUED CLOSE
 FTPTA8   03/21/09 14:56:05.98 03/21/09 15:11:31.19    15:25.21         33,066            875  52  APPL ISSUED CLOSE
 FTPTA8   03/21/09 15:12:01.80 03/21/09 15:13:30.66     1:28.86         35,266          1,537  52  APPL ISSUED CLOSE
 FTPTA8   03/21/09 15:13:45.48 03/21/09 15:17:09.41     3:23.93         38,223          2,199  52  APPL ISSUED CLOSE
 FTPTA8   03/21/09 15:18:54.59 03/21/09 15:20:07.26     1:12.67         34,273          1,537  52  APPL ISSUED CLOSE
 FTPTA8   03/21/09 15:20:22.01 03/21/09 15:28:20.73     7:58.72         33,118            875  52  APPL ISSUED CLOSE
 *** TOTAL FOR FTPTA8   (   13 ITEMS)               11:16:44.36        726,991         34,632

 
 FTPTA9   03/21/09 14:09:28.52 03/21/09 14:09:29.22        0.70        257,537          3,052  61  CLIENT SENT RESET
 FTPTA9   03/21/09 14:10:24.02 03/21/09 14:10:34.10       10.08         27,043            329  52  APPL ISSUED CLOSE
 FTPTA9   03/21/09 15:01:06.82 03/21/09 15:01:07.46        0.64        257,537          3,052  61  CLIENT SENT RESET
 FTPTA9   03/21/09 15:13:52.13 03/21/09 15:14:02.53       10.40         27,043            329  52  APPL ISSUED CLOSE

 ...

See other sample SMF reports.