Envoy Configuration and Management Manual

Subsystem Control Facility (SCF) for Envoy

Envoy Configuration and Management Manual—429861-001

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SCF Commands

Many SCF commands operate on the objects belonging to a subsystem. For example,

you can use the INFO LINE command to display the current attribute values for an

Envoy line, then use the ALTER LINE command to change those attribute values.

Several commands display and change SCF line attributes. For example, the OUT

command controls the files used for display output. The ASSUME command sets the

default object type and object name.

You can use the HELP command interactively within SCF to display a list of the

available SCF commands and to request additional, specific information, such as

command syntax.

Commands that operate on the Envoy subsystem objects are described in Section 5,

Subsystem Control Facility (SCF) Commands for Envoy.

Commands such as OUT, ASSUME, and HELP are not subsystem-specific and are

described in the SCF Reference Manual for G-Series Releases.

Sensitive and Nonsensitive Commands

Because some commands can have detrimental effects if improperly used, special

qualification is required to use them. These commands are sensitive commands.

Commands that request information or status but do not affect operation are nonsensitive

commands.

Only a user who has super-group access, the owner of the subsystem, or a member of the

group of the owner of the subsystem can issue a sensitive command. The owner of a

subsystem is the user who started that subsystem (or any user whose application ID is

the same as the server ID).

Anyone can use a nonsensitive command.

General Command Format

An SCF command always begins with a keyword that identifies it (such as ADD,

START, or STATS). For SCF commands that pertain to an object, an object type and an

object name follow the keyword.

For example, the following command aborts the line object named ENV01:

-> ABORT LINE $ENV01

To get additional information, follow the object name with a comma and the attributes

required to specify the action. For example, the following command changes the value

of the SPEED attribute for an Envoy line named $ENV1:

-> ALTER LINE $BSCA, BSCPTP, SPEED 192

In commands that provide displayed information, such as the INFO and STATUS

commands, you can specify the DETAIL keyword to get a detailed information display.