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SMF Type 119 Record - Subtype 20

This table shows the record layout for type 119 SMF records
(TN3270E Telnet server SNA session 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.

The Subtype 20 TN3270E Telnet server (Telnet) SNA session initiation record is collected when the z/OS TN3270E Telnet server establishes a SNA session with a Telnet client. The information in this record relates to a given LU-LU session, and not to the TCP/IP Telnet connection; for example, if multiple LU-LU sessions use the same Telnet connection, separate SNA session initiation records for each LU-LU session are reported.

The Type 119-20 Telnet SNA session initiation record is collected at the same point in session processing as the equivalent Type 118 TN3270E Telnet server "LOGN" SMF record.

Guideline: Because the Telnet SNA session initiation record contains a subset of the information that the Telnet SNA session termination record contains, you should collect only the Telnet SNA session termination records.

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

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SMF Type 119 Record -- TN3270E Telnet server SNA session initiation record
Offset
(Dec.)
Offset
(Hex)
NameLengthFormatDescription
00SMF119LEN2binary
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.
22SMF119SEG2binary
Segment descriptor (see record length field).
44SMF119FLG1binary
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.
55SMF119RTY1binary
Record type 119 (X'77').
66SMF119TME4binary
Time since midnight, in hundredths of a second, that the record was moved into the SMF buffer.
10ASMF119DTE4packed
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.
14ESMF119SID4EBCDIC
System identification (from the SMFPRMxx SID parameter).
1812SMF119SSI4EBCDIC
Subsystem identification.
2216SMF119STY2binary
Record subtype.
Self Defining Section
2418SMF119TRN2binary
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.
261A--2binary
Reserved.
281CSMF119IDOff4binary
Offset to TCP/IP identification section from RDW.
3220SMF119IDLen2binary
Length of TCP/IP identification section.
3422SMF119IDNum2binary
Number of TCP/IP identification sections.
3624SMF119S1Off4Binary
Offset to first data section
4028SMF119S1Len2Binary
Length of first data section
422ASMF119S1Num2Binary
Number of first data sections
TCP/IP Identification Section

For the TCP/IP statistics record, the TCP/IP stack identification section indicates STACK as the subcomponent and x'08' (event record), x'20' (recording stop), or x'10' (recording shutdown) as the record reason.

(Offset from beginning of record: SMF119IDOff)
00SMF119TI_
SYSName
8EBCDIC
System name from SYSNAME in IEASYSxx
88SMF119TI_
SysplexName
8EBCDIC
Sysplex name from SYSPLEX in COUPLExx
1610SMF119TI_
Stack
8EBCDIC
TCP/IP stack name
2418SMF119TI_
ReleaseID
8EBCDIC
z/OS Communications Server TCP/IP release identifier
3220SMF119TI_
Comp
8EBCDIC
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
4028SMF119TI_
ASName
8EBCDIC
Started task qualifier or address space name of address space that writes this SMF record
4830SMF119TI_
UserID
8EBCDIC
User ID of security context under which this SMF record is written
5638--2EBCDIC
Reserved
583ASMF119TI_
ASID
2Binary
ASID of address space that writes this SMF record
603CSMF119TI_
Reason
1Binary
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
613D--3EBCDIC
Reserved
Subtype 20 - Telnet SNA session initiation section (TCP/IP identification section).

TN3270S is the subcomponent, and X'08' (event record) is the record reason.

(Offset from beginning of record: SMF119S1Off)
00SMF119TN_
NILU
8EBCDIC
Telnet LU name
88SMF119TN_
NIAppl
8EBCDIC
Host application name
1610SMF119TN_
NILdev
4Binary
Telnet server internal logical device number
2014SMF119TN_
NIRIP
16Binary
Remote IP address
3624SMF119TN_
NILIP
16Binary
Local IP address
5230SMF119TN_
NIRPort
2Binary
Remote (client) port number
5434SMF119TN_
NILPort
2Binary
Local port number
5638SMF119TN_
NITime
4Binary
Time of day of session initiation
603CSMF119TN_
NIDate
4Packed
Date of session initiation

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

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.

Copyright 2017.
Pacific Systems Group.
All rights reserved.


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