TN3270E Telnet server SNA session initiation record (subtype 20)

The Type 119 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 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.

See Table 1 for the contents of the TCP/IP stack identification section. For the Telnet SNA session initiation record, the TCP/IP stack identification section indicates TN3270S as the subcomponent and X'08' (event record) as the record reason. Table 1 shows the Telnet SNA initiation-specific section of this SMF record.

Table 1. TN3270E Telnet server SNA session initiation record self-defining section
Offset	Name	Length	Format	Description
0(X'0')	Standard SMF Header	24		Standard SMF header; subtype is 20(X'14')
Self-defining section
24(X'0')	SMF119SD_TRN	2	Binary	Number of triplets in this record (2)
26(X'18')		2	Binary	Reserved
28(X'1A')	SMF119IDOff	4	Binary	Offset to TCP/IP identification section
32(X'1C')	SMF119IDLen	2	Binary	Length of TCP/IP identification section
34(X'20')	SMF119IDNum	2	Binary	Number of TCP/IP identification sections
36(X'24')	SMF119S1Off	4	Binary	Offset to Telnet SNA session initiation section
40(X'28')	SMF119S1Len	2	Binary	Length of Telnet SNA session initiation section
42(X'2A')	SMF119S1Num	2	Binary	Number of Telnet SNA session initiation sections

Table 2 shows the Telnet SNA session initiation section (TCP/IP identification section). TN3270S is the subcomponent, and X'08' (event record) is the record reason.

Table 2. TN3270E Telnet server SNA session initiation section
Offset	Name	Length	Format	Description
0(X'0')	SMF119TN_NILU	8	EBCDIC	Telnet LU name
8(X'8')	SMF119TN_NIAppl	8	EBCDIC	Host application name
16(X'10')	SMF119TN_NILdev	4	Binary	Telnet server internal logical device number
20(X'14')	SMF119TN_NIRIP	16	Binary	Remote IP address
36(X'24')	SMF119TN_NILIP	16	Binary	Local IP address
52(X'30')	SMF119TN_NIRPort	2	Binary	Remote (client) port number
54(X'34')	SMF119TN_NILPort	2	Binary	Local port number
56(X'38')	SMF119TN_NITime	4	Binary	Time of day of session initiation
60(X'3C')	SMF119TN_NIDate	4	Packed	Date of session initiation