Standard data format concepts

The following concepts apply to standard data formats:

Unless specified otherwise, all times are indicated in units of 1/100 seconds since midnight (local time). Certain select times are in MVS™ TOD clock format.
All dates are indicated in packed decimal (BCD) form, with digits X'01yydddF'. If no data is available, a date of X'0000000F' is written.
Interval durations are specified in one of two formats, indicated within the record itself. It can either be in units of 1/100 seconds or a 64-bit integer with bit 51 marking the microsecond.
All interval-type statistics records (such as TCP/IP statistics) report interval data, rather than total data.
This behavior for Type 119 records is a change in semantics from type 118 records, which record summary data. For example, while a type 118 record would report "bytes sent to date", a Type 119 record would report "bytes sent since the last recording interval".
IP addresses
Most IP addresses are in 128-bit IPv6 format. In this format, IPv4 addresses are reported in IPv4-mapped form; the 4-byte IPv4 address is preceded by 12 bytes, the first 10 of which are 0, and the last two of which are 'FF'x. IPv6 addresses appear in numeric form.
For the following record subtypes, the IPv4 and IPv6 addresses are defined in the same 16-byte field in the record section. The IPv4 address is reported in the first 4 bytes of the field, and the IPv6 address occupies the whole field. A flag field in the record section indicates whether the field contains an IPv4 or an IPv6 address.
- Subtype 4 TCP/IP profile
- Subtypes 32 - 37 DVIPA
- Subtypes 73 - 80 IPSec
For information about AT-TLS cipher suite values, see TTLSCipherParms statement in z/OS Communications Server: IP Configuration Reference.