Create Line Desc (Frame Relay) (CRTLINFR)

The Create Line Description (Frame-Relay Network) (CRTLINFR) command creates a line description for a frame-relay network (FR) line. More information about using this command is in the Communications Configuration book, SC41-5401.

Restriction: You must have input/output system configuration (*IOSYSCFG) special authority to use this command.

Parameters

Keyword	Description	Choices	Notes
LIND	Line description	Name	Required, Positional 1
NWI	Attached NWI	Name, *NONE	Optional, Positional 2
NWIDLCI	DLC identifier	1-1018, *NONE	Optional, Positional 3
ONLINE	Online at IPL	YES, NO	Optional
VRYWAIT	Vary on wait	15-180, *NOWAIT	Optional
MAXCTL	Maximum controllers	1-256, 40	Optional
MAXFRAME	Maximum frame size	265-8182, 1590	Optional
EXCHID	Exchange identifier	05600000-056FFFFF, *SYSGEN	Optional
SSAP	SSAP list	Single values: SYSGEN Other values (up to 24 repetitions): Element list*	Optional
	Element 1: Source service access point	02-FE
	Element 2: SSAP maximum frame	265-8182, *MAXFRAME, 265, 502, 1014, 2038, 4086, 8182
	Element 3: SSAP type	CALC, NONSNA, SNA, HPR
TEXT	Text 'description'	Character value, *BLANK	Optional
LINKSPEED	Link speed	1200, 2400, 4800, 7200, 9600, 14400, 19200, 48000, 56000, 64000, 112000, 128000, 168000, 192000, 224000, 256000, 280000, 320000, 336000, 384000, 448000, 499000, 576000, 614000, 691000, 768000, 845000, 922000, 998000, 1075000, 1152000, 1229000, 1382000, 1536000, 1690000, 1843000, 1997000	Optional
NETCTL	Network controller	Name	Optional
COSTCNN	Cost/connect time	0-255, 0	Optional
COSTBYTE	Cost/byte	0-255, 0	Optional
SECURITY	Security for line	PKTSWTNET, NONSECURE, UNDGRDCBL, SECURECND, GUARDCND, ENCRYPTED, *MAX	Optional
PRPDLY	Propagation delay	PKTSWTNET, LAN, MIN, TELEPHONE, SATELLITE, MAX	Optional
USRDFN1	User-defined 1	0-255, 128	Optional
USRDFN2	User-defined 2	0-255, 128	Optional
USRDFN3	User-defined 3	0-255, 128	Optional
CMNRCYLMT	Recovery limits	Single values: SYSVAL Other values: Element list*	Optional
	Element 1: Count limit	0-99, 2
	Element 2: Time interval	0-120, 5
MSGQ	Message queue	Single values: SYSVAL, SYSOPR Other values: Qualified object name	Optional
	Qualifier 1: Message queue	Name
	Qualifier 2: Library	Name
AUT	Authority	Name, CHANGE, ALL, USE, EXCLUDE, *LIBCRTAUT	Optional

Top

Attached NWI (NWI)

Specifies, for a nonswitched connection, the frame relay network interface description containing the DLCI to which this line permanently attaches. If a DLCI is not specified for the network interface, a description cannot be specified. If a DLCI is specified for the network interface, a description must be specified.

*NONE: No network interface is specified.

name: Specify the name of the network interface to which this line permanently attaches.

DLC identifier (NWIDLCI)

Specifies the data link connection identifier (DLCI) for the network interface.

Note: NWIDLCI(*NONE) must be specified when RSRCNAME(*NWID) is not specified. Otherwise, NWIDLCI(*NONE) can be specified only when NWI(*NONE) is also specified.

*NONE: A DLCI is not specified for the network interface.

data-link-connection-ID: Specify the DLCI for the network interface to which this line permanently attaches. Valid values range from 1 through 1018.

Vary on wait (VRYWAIT)

Specifies whether the line is varied on asynchronously or synchronously. For synchronous vary on, this parameter specifies how long the system waits for the vary on to complete.

*NOWAIT: The system does not wait for vary on completion. The line is varied on asynchronously.
vary-on-wait: Specify the time (in seconds) to wait. Valid values range from 15 through 180. The system waits until the line is varied on, or until the specified time passes, before completing the Vary Configuration (VRYCFG) command.

Notes:

When ONLINE(*YES) is used, specifying a wait time in the line description affects system IPL time. In such cases, system IPL time is influenced by the amount of time required to synchronously vary on the line or reach the wait-time value.
The time required to vary on a line is the time it takes to:
- Put tasks in place to manage the line
- Activate the communications I/O processor (IOP), including downloading the IOP model-unique Licensed Internal Code
- Establish the communications tasks and processes

Normal vary-on time ranges from 5 through 45 seconds, but can be longer, depending on the system, line protocol, and other factors.

Maximum frame size (MAXFRAME)

Specifies the maximum frame (path information unit (PIU)) size that the controller can send or receive. This value is used to calculate request unit (RU) sizes. Since the maximum PIU size that the controller can send or receive is negotiated at exchange identifier time, the maximum PIU size used at run time may be different. This value matches the corresponding value on the host system. The recommended MAXFRAME values are: 502, 1014, 1590, 2038, 4086, and 8182 bytes.

1590: The maximum frame size is 1590 bytes.
maximum-frame-size: Specify the maximum frame size value to be used. Valid values range from 265 through 8182.

Exchange identifier (EXCHID)

Specifies the hexadecimal exchange identifier that is used to identify the local system to the remote system. The 8-digit hexadecimal exchange identifier contains three digits for the block number and five digits for the identifier of this system.

*SYSGEN: The operating system generates the exchange identifier.
exchange-identifier: Specify (if the *SYSGEN value is not specified) an exchange identifier composed of eight hexadecimal digits starting with 056.

SSAP list (SSAP)

Specifies the source service access point (SSAP). The most commonly used SNA SSAP is hex 04. All SSAP values must be unique.

*SYSGEN: The system automatically creates three SSAPs: hex 04 for Systems Network Architecture (SNA) applications, hex C8 for high-performance routing (HPR) applications, and hex AA for Transmission Control Protocol/Internet Protocol (TCP/IP) applications.

The possible SSAPs value is:

source-service-access-point

Specify a source service access point for receiving and transmitting data. A maximum of 24 SSAP values can be specified.

For TCP/IP applications, the SSAP must be AA.
For SNA applications, the SSAP must be a hex value ranging from 04 through 9C in multiples of four (04, 08, 0C, and so on).
For HPR applications, the SSAP must be hex C8.
For non-SNA applications, the SSAP must be a hex value ranging from 02 through FE in multiples of two (02, 04, 06, and so on).

The possible Frame Size for SSAPs values are:

*MAXFRAME: The frame size specified on the MAXFRAME parameter is used.
SSAP-maximum-frame: Specify the maximum SSAP frame size (the maximum size of the data field that can be transmitted or received). Valid values for this parameter range from 265 through 8182 bytes.
Note: This value cannot be larger than the value specified on the MAXFRAME parameter.

The possible SSAP Type values are:

*CALC

The system determines the SSAP type based on the following hex values:

04 through 9C, divisible by 4 (for SNA)
C8 (for HPR)
02 through FE, divisible by 2 (for non-SNA)

*SNA

The SSAP is used for SNA communications. Valid values range from hex 04 through hex 9C in multiples of four (04, 08, 0C, and so on).

*NONSNA

The SSAP is used for non-SNA communications. Valid values range from hex 02 through hex FE in multiples of two (02, 04, 06, and so on).

*HPR

The SSAP is used for HPR communications. It also can be used for SNA applications. The valid value is hex C8.

Link speed (LINKSPEED)

Specifies the link speed in bits per second (bps). This parameter is valid only if APPN is used on the system.

64000: The link speed is 64000 bps.

link-speed: Specify the link speed. Valid values are: 1200, 2400, 4800, 7200, 9600, 14400, 19200, 48000, 56000, 64000, 112000, 128000, 168000, 192000, 224000, 256000, 280000, 320000, 336000, 384000, 448000, 499000, 576000, 614000, 691000, 768000, 845000, 922000, 998000, 1075000, 1152000, 1229000, 1382000, 1536000, 1690000, 1843000, 1997000.

Security for line (SECURITY)

Specifies the security level of the physical line. This parameter is valid only if APPN is used on the system.

*PKTSWTNET: A packet switched network is used. Data does not always follow the same path through the network.
*NONSECURE: Normal priority is used.
*UNDGRDCBL: An underground cable is used.
*SECURECND: A secure, unguarded conduit (for example, a pressurized pipe) is used.
*GUARDCND: A guarded conduit, which is protected against physical tapping, is used.
*ENCRYPTED: Data flowing on the line is encrypted.
*MAX: A guarded conduit, protected against physical and radiation tapping, is used.

Propagation delay (PRPDLY)

Specifies the level of propagation delay on the line. This parameter is valid only if APPN is used on the system. The order of the values from shortest to longest delay is *MIN, *LAN, *TELEPHONE, *PKTSWTNET, and *SATELLITE.

*PKTSWTNET: The packet switched network propagation delay is used.
*LAN: The local area network propagation delay is used.
*MIN: The minimum propagation delay is used.
*TELEPHONE: The telephone propagation delay is used.
*SATELLITE: The satellite propagation delay is used.
*MAX: The maximum propagation delay is used.

Recovery limits (CMNRCYLMT)

Specifies the number of recovery attempts made by the system before an inquiry message is sent to the system operator. Also specifies the time (in minutes) that must elapse before the system sends an inquiry message to the system operator indicating that the recovery attempt count limit is reached.

2: Two recovery attempts are made within the interval specified.
count-limit: Specify the number of recovery attempts to be made. Valid values range from 0 through 99.
5: A 15-second time-out period is used.
time-interval: Specify the time interval (in minutes) at which the specified number of second-level recoveries are attempted. Valid values range from 0 through 120. If the value specified for count-limit is not 0, the value 0 specifies infinite recovery.
*SYSVAL: The recovery limits specified in the QCMNRCYLMT system value are used.

Message queue (MSGQ)

Specifies the message queue to which operational messages are sent.

*SYSVAL: The value in the system value QCFGMSGQ is used.

*SYSOPR: Messages are sent to the system operator message queue (QSYS/QSYSOPR).

Qualifier 1: Message queue

name: Specify the name of the message queue to which operational messages are sent.

Qualifier 2: Library

name: Specify the name of the library where the message queue is located.

Authority (AUT)

Specifies the authority you are giving to users who do not have specific authority for the object, who are not on an authorization list, and whose group profile or supplemental group profiles do not have specific authority for the object.

*CHANGE: The user can perform all operations on the object except those limited to the owner or controlled by object existence (*OBJEXIST) and object management (*OBJMGT) authorities. The user can change and perform basic functions on the object. *CHANGE authority provides object operational (*OBJOPR) authority and all data authority. If the object is an authorization list, the user cannot add, change, or remove users.

*ALL: The user can perform all operations except those limited to the owner or controlled by authorization list management (*AUTLMGT) authority. The user can control the object's existence, specify the security for the object, change the object, and perform basic functions on the object. The user also can change ownership of the object.

*USE: The user can perform basic operations on the object, such as running a program or reading a file. The user cannot change the object. Use (*USE) authority provides object operational (*OBJOPR), read (*READ), and execute (*EXECUTE) authorities.

*EXCLUDE: The user cannot access the object.

*LIBCRTAUT: The system determines the authority for the object by using the value specified for the Create authority (CRTAUT) parameter on the Create Library (CRTLIB) command for the library containing the object to be created. If the value specified for the CRTAUT parameter is changed, the new value will not affect any existing objects.

name: Specify the name of an authorization list to be used for authority to the object. Users included in the authorization list are granted authority to the object as specified in the list. The authorization list must exist when the object is created.

Examples

CRTLINFR   LIND(FRLIN)  NWI(NEWONE)  NWIDLCI(1001)
           ONLINE(*YES)
           VRYWAIT(*NOWAIT)  MAXFRAME(1600)  LINKSPEED(2400)

This command creates frame relay line FRLIN. FRLIN is attached to a frame relay NWI named NEWONE using DLCI number 1001. FRLIN is automatically varied on at initial program load (IPL). The system does not wait for the vary on to complete; therefore, the line is varied on asynchronously. The maximum frame size for this line is 1600 and the link speed is 2400 bits per second (bps).