FM Profile 3

FM Profile 3 is supported on PLU-SLU sessions using LU type 0, 1, 2, or 3. This profile specifies the following session rules:

The following FM Usage fields define the options for Profile 3:

Tables 3.5 through 3.7 list the FM Profile 3 options that SNA Server supports. SNA Server rejects any bind that specifies an option value not listed in these tables.

Table 3.5 Supported Options for Bind Requests from Primary LUs

Usage Option

Value

Meaning

Chaining use element

0

Can send only single-element chains

1

Can send single- or multiple-chains

Request control mode

0

Immediate request mode used

Chain response protocol

01

Can request only exception-only responses

10

Can request only definite responses

11

Can request definite or exception-only responses

Compression indicator

0

Cannot send compressed data

1

Can send compressed data (LU type 1 only)

Send EB indicator

1

Can send End Bracket


Table 3.6 Supported Options for Bind Requests from Secondary LUs

Usage Option

Value

Meaning

Chaining use element

0

Can only send single-element chains (not LU type 2)

1

Can send single- or multiple-chains

Request control mode

0

Immediate request mode used

Chain response protocol

01

Can request only exception-only responses

10

Can request only definite responses

11

Can request definite or exception-only responses

Compression indicator

0

Cannot send compressed data

Send EB indicator

1

Cannot send End Bracket


Table 3.7 Supported Common Protocol Values for Bind Requests from Any LU

Usage Option

Value

Meaning

FM header usage

0

Cannot exchange FM headers

1

Can exchange FM headers

Bracket usage

1

Bracket protocols must be used

Bracket termination rule

1

Bracket termination rule 1 is used

Alternate code set allowed

0

Must use EBCDIC

Normal flow send/receive mode

10

Half-duplex flip-flop