FM Profiles

Eight FM profiles, numbered 0, 2, 3, 4, 6, 7, 18, and 19 are defined by SNA. However, because profiles 0 and 6 are used only by the SSCP, and profile 19 is used only with LU type 6.2, five profiles can be applicable to an LUA application. Each profile differs in the SNA facilities that are restricted.

An approximate summary of the FM profiles is shown in FM Profile Characteristics. In the table, a blank cell means that the SNA facility is not restricted in this profile—it can have any use that can be specified in the BIND parameters.

The LUA RUI supports FM profiles 2, 3, 4, 7, and 18.

Table 1. FM Profile Characteristics
SNA Facility FMP 2 FMP 3 FMP 4 FMP 7 FMP 18
Request mode SLU uses delayed
Response mode SLU uses immediate Immediate Immediate Immediate Immediate
RU chains Single RU chains only
Length-checked compression LU 0 only
FMH-1 session control block (SCB) compression Not allowed
Data flow control RUs allowed None
  • CANCEL
  • SIGNAL
  • LUSTAT (SLU only)
  • CHASE
  • SHUTD
  • SHUTC
  • RSHUTD
  • BID, RTR
  • CANCEL
  • SIGNAL
  • LUSTAT
  • QEC
  • QC
  • RELQ
  • CHASE
  • SHUTD
  • SHUTC
  • RSHUTD
  • BID, RTR
  • CANCEL
  • SIGNAL
  • LUSTAT
  • RSHUTD
  • CANCEL
  • SIGNAL
  • LUSTAT
  • CHASE
  • BIS, SBI
  • BID, RTR
FM Headers Not allowed
Brackets Restricted use
Flow protocol FDX
Recovery By PLU only