TCP/IP stack start/stop record (subtype 8)

The TCP/IP stack start/stop record is collected when an individual TCP/IP stack becomes available for processing and when the stack ceases to be available for processing. The record can be used as a beginning and ending bookmark with which to delineate all other SMF recording activity for a given TCP/IP stack.

Guideline: There is no Type 118 record equivalent for the TCP/IP stack start/stop record.

See Table 1 for the contents of the TCP/IP stack identification section. For the TCP/IP stack start/stop record, the TCP/IP stack identification section indicates TCP as the subcomponent and X'08' (event record) as the record reason.

Table 1 shows the TCP/IP stack start/stop record self-defining section:

Table 1. TCP/IP stack start/stop record self-defining section
Offset	Name	Length	Format	Description
0(X'0')	Standard SMF Header	24		Standard SMF header; subtype is 8(X'8')
Self-defining section
24(X'18')	SMF119SD_TRN	2	Binary	Number of triplets in this record (2)
26(X'1A')		2	Binary	Reserved
28(X'1C')	SMF119IDOff	4	Binary	Offset to TCP/IP identification section
32(X'20')	SMF119IDLen	2	Binary	Length of TCP/IP identification section
34(X'22')	SMF119IDNum	2	Binary	Number of TCP/IP identification sections
36(X'24')	SMF119S1Off	4	Binary	Offset to TCP/IP start/stop section
40(X'28')	SMF119S1Len	2	Binary	Length of TCP/IP start/stop section
42(X'2A')	SMF119S1Num	2	Binary	Number of TCP/IP start/stop sections

Table 2 shows the TCP/IP stack start/stop specific section of this SMF record.

Table 2. TCP/IP stack start/stop record section
Offset	Name	Length	Format	Description
0(X'0')	SMF119TC_STType	1	Binary	Event type: X'80': Stack start up X'40': Stack termination X'20': Stack unplanned termination
1(X'1')	SMF119TC_STFlags	1	Binary	Event flags: X'80': IPv6 supported on this stack X'40': IPSEC configured on this stack X'20': IPSEC6 configured on this stack
2(X'2')		2		Reserved
4(X'4')	SMF119TC_STTime	4	Binary	Time of day stack startup or termination
8(X'8')	SMF119TC_STDate	4	Packed	Date of stack startup or termination
12(X'C')	SMF119TC_STECSAMax	8	Binary	Maximum number of ECSA storage bytes allocated since the TCP/IP stack was started
20(X'14')	SMF119TC_STECSALimit	8	Binary	Maximum number of ECSA storage bytes allowed, as specified on the GLOBALCONFIG statement in the TCP/IP profile. The value 0 indicates that there is no limit.
28(X'1C')	SMF119TC_STPrivateMax	8	Binary	Maximum number of authorized private subpool storage bytes allocated since the TCP/IP stack was started.
36(X'24')	SMF119TC_STPrivateLimit	8	Binary	Maximum number of authorized private subpool storage bytes allowed, as specified on the GLOBALCONFIG statement in the TCP/IP profile. The value 0 indicates that there is no limit.