Change Line Desc (DDI) (CHGLINDDI)

Parameters

Keyword	Description	Choices	Notes
LIND	Line description	Name	Required, Key, Positional 1
RSRCNAME	Resource name	Name, SAME, NWID	Optional
ONLINE	Online at IPL	SAME, YES, *NO	Optional
VRYWAIT	Vary on wait	15-180, SAME, NOWAIT	Optional
MAXCTL	Maximum controllers	1-256, *SAME, 40	Optional
MAXFRAME	Maximum frame size	265-4444, *SAME, 4105	Optional
LOGLVL	Logging level	SAME, OFF, ERRORS, ALL	Optional
LCLMGRMODE	Local manager mode	SAME, OBSERVING, *NONE	Optional
ADPTADR	Local adapter address	400000000000-7FFFFFFFFFFF, SAME, ADPT	Optional
EXCHID	Exchange identifier	05600000-056FFFFF, SYSGEN, SAME	Optional
SSAP	SSAP list	Single values: SAME, SYSGEN Other values (up to 24 repetitions): Element list	Optional
	Element 1: Source service access point	02-FE
	Element 2: SSAP maximum frame	265-4444, *MAXFRAME
	Element 3: SSAP type	CALC, NONSNA, *SNA
GRPADR	Group address	Single values: SAME, NONE Other values (up to 12 repetitions): 800000000000-FFFFFFFFFFFE	Optional
TKNRTTTIME	Token rotation time	4-167, SAME, CALC	Optional
COSTCNN	Cost/connect time	0-255, *SAME, 0	Optional
COSTBYTE	Cost/byte	0-255, *SAME, 0	Optional
SECURITY	Security for line	SAME, NONSECURE, PKTSWTNET, UNDGRDCBL, SECURECND, GUARDCND, ENCRYPTED, MAX	Optional
PRPDLY	Propagation delay	SAME, PKTSWTNET, LAN, MIN, TELEPHONE, SATELLITE, *MAX	Optional
USRDFN1	User-defined 1	0-255, *SAME, 128	Optional
USRDFN2	User-defined 2	0-255, *SAME, 128	Optional
USRDFN3	User-defined 3	0-255, *SAME, 128	Optional
AUTOCRTCTL	Autocreate controller	SAME, NO, *YES	Optional
AUTODLTCTL	Autodelete controller	1-10000, SAME, 1440, NONE	Optional
CMNRCYLMT	Recovery limits	Single values: SAME, 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: SAME, SYSVAL, SYSOPR Other values: Qualified object name*	Optional
	Qualifier 1: Message queue	Name
	Qualifier 2: Library	Name
TEXT	Text 'description'	Character value, SAME, BLANK	Optional
LINKSPEED	Link speed	SAME, MIN, 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, 4M, 10M, 16M, *MAX	Optional

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Resource name (RSRCNAME)

Specifies the resource name that identifies the hardware that the description represents.

Note: Use the Work with Hardware Resources (WRKHDWRSC) command with *CMN specified for the TYPE parameter to help determine the resource name. The resource name is on the port. For example, the resource name may be CMN01 on an Ethernet port.

Note: The value specified on the RSRCNAME parameter cannot be changed from *NWID to another value or from another value to *NWID.

This is a required parameter.

*SAME: The value does not change.

*NWID: The resource name specified on the attached frame relay network interface description is used.
name: Specify a resource name.

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.

*SAME: The value does not change.

*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 when system identifiers are exchanged, the maximum PIU size used at run time may be different. This value matches the corresponding value on the host system.

Note: The MAXFRAME value is provided by your telephone carrier from which you should subtract 44 bytes for the size of the header.

*SAME: The value does not change.

4105: The maximum frame size is 4105 bytes.
Note: This value changes to 1556 when RSRCNAME(*NWID) is specified.
maximum-frame-size: Specify the maximum frame size. Valid values range from 265 through 4444 bytes.

Logging level (LOGLVL)

Specifies the error logging level used by the DDI local area network (LAN) manager. This parameter is used to determine whether unsolicited LAN errors are logged. These messages are logged in either the QHST message queue or the QSYSOPR message queue.

Note: The LOGLVL parameter is not used when RSRCNAME(*NWID) is specified.

*SAME: The value does not change.

*OFF: Errors are not monitored.
*ERRORS: Logs LAN manager error messages only.
*ALL: Logs LAN manager error messages and informational messages.

Local manager mode (LCLMGRMODE)

Specifies whether this station is an observing network manager. An observing network manager logs network error messages and informational messages for this and other stations on the ring. These messages are logged in either the QHST message queue or the QSYSOPR message queue.

Examples of information available in observing mode only include errors on remote stations that do not affect general ring operation, or information about stations that are joining or leaving the ring.

Note: The LCLMGRMODE parameter is not used when RSRCNAME(*NWID) or LOGLVL(*OFF) is specified.

*SAME: The value does not change.

*OBSERVING: The LAN manager function of this station retrieves information generated by all adapters.
*NONE: The LAN manager function of this station only retrieves information generated by the local adapter.
Note: A local area network manager logs only those messages that pertain to this station and its ability to access the ring when *NONE is specified.

Local adapter address (ADPTADR)

Specifies the 12-character hexadecimal adapter address.

Note: ADPTADR(*ADPT) cannot be specified when RSRCNAME(*NWID) is specified.

*SAME: The value does not change.

*ADPT: This value gives the user the preset DDI default address for this DDI adapter card. The user may display this by doing a DSPLIND on this line description after it has successfully varied on.
local-adapter-address: Specify an address for this system in the DDI network. Valid values range from hexadecimal 400000000000 through 7FFFFFFFFFFF.

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.

*SAME: The value does not change.

*SYSGEN: The operating system generates the exchange identifier.
exchange-identifier: Specify an exchange identifier composed of eight hexadecimal digits starting with 056.

SSAP list (SSAP)

Specifies source service access points (SSAPs). This is the hexadecimal logical address used to route incoming data from the bus to the proper user. A maximum frame size can be specified for each SSAP. Valid SSAP values are AA (for TCP/IP), and 04 through 9C divisible by 4 (for SNA).

The destination service access point (DSAP), specified by the remote controller, must match one of the SSAPs specified in order for communication to occur. All SSAP values must be unique.

*SAME: The value does not change.

*SYSGEN: The system automatically creates three SSAPs, hex 04 for SNA, and hex 06 for TCP/IP applications.

The possible SSAP values are:

source-service-access-point: Specify a maximum of 24 SSAPs using valid SSAP values.

You can enter multiple values for this parameter.

The possible Frame Size for SSAP 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 may be transmitted or received). Valid values for this parameter range from 265 through 4444 bytes, but must not exceed the value of the MAXFRAME parameter.

The possible SSAP Type values are:

*CALC

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

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

*SNA

The SSAP is used for SNA communications. Valid values range from 04 through 9C and must be divisible by 4.

*NONSNA

The SSAP is used for non-SNA communications. Valid values range from 02 through FE and must be divisible by 2.

Group address (GRPADR)

Specifies the distributed data interface group addresses used. Group addresses must each be specified as a 12-digit hexadecimal number. Valid values range from 800000000000 through FFFFFFFFFFFE.

You can enter multiple values for this parameter.

*SAME: The value does not change.

*NONE: No group addresses are specified.
group-address: Specify the group addresses to be used.

Token rotation time (TKNRTTTIME)

Specifies the token rotation time requested. This value is used when th station bids on the network. The lowest value of all attached stations on a ring determines the value the ring uses.

Note: TKNRTTTIME(*CALC) must be specified when RSRCNAME(*NWID) is specified.

*SAME: The value does not change.

*CALC: The system calculates the value based on the type of line that is linked to the controller.
token-rotation-time: Specify a value ranging from 4 through 167 milliseconds.

Security for line (SECURITY)

Specifies the security level of the physical line.

*SAME: The value does not change.

*NONSECURE: Normal priority is used.
*PKTSWTNET: A packet switched network is used. Data does not always follow the same path through the network.
*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.

*SAME: The value does not change.

*LAN: The local area network propagation delay is used.
*PKTSWTNET: The packet switched 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.

User-defined 1 (USRDFN1)

Specifies the first of the three user-defined fields. This field is used to describe unique characteristics of the line that is controlled. This parameter is valid only if APPN is used on the system.

Note: Information about the values that are specified for this parameter is provided in the APPN Support information in the iSeries Information Center at http://www.iseries.ibm.com/infocenter.

*SAME: The value does not change.

user-defined-1: Specify a value ranging from 0 through 255.

User-defined 2 (USRDFN2)

Specifies the second of the three user-defined fields. This field is used to describe unique characteristics of the line that is controlled. This parameter is valid only if APPN is used on the system.

Note: Information about the values that are specified for this parameter is provided in the APPN Support information in the iSeries Information Center at http://www.iseries.ibm.com/infocenter.

*SAME: The value does not change.

user-defined-2: Specify a value ranging from 0 through 255.

User-defined 3 (USRDFN3)

Specifies the third of the three user-defined fields. This field is used to describe unique characteristics of the line that is controlled. This parameter is valid only if APPN is used on the system.

Note: Information about the values that are specified for this parameter is provided in the APPN Support information in the iSeries Information Center at http://www.iseries.ibm.com/infocenter.

*SAME: The value does not change.

user-defined-3: Specify a value ranging from 0 through 255.

Autodelete controller (AUTODLTCTL)

Specifies the number of minutes an automatically created controller can remain in an idle state (switched from varied on to varied on pending) before the controller description and attached device descriptions are varied off and deleted.

*SAME: The value does not change.

1440: The controller description can be idle for 1440 minutes (24 hours).
*NONE: The system does not automatically delete or vary off the automatically configured, idle controller descriptions.
wait-time: Specify the number of minutes to wait before deleting the automatically configured, idle controller descriptions for this line. Valid values range from 1 to 10,000 minutes.

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.

The possible Maximum Recovery Limit values are:

*SAME: The value does not change.

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.

The possible Recovery Time Interval values are:

5: A 15-second timeout 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.

*SAME: The value does not change.

*SYSVAL: Messages are sent to the message queue defined in the QCFGMSGQ system value.

*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.

Link speed (LINKSPEED)

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

*SAME: The value does not change.

*MIN: A link speed of less than 1200 bps is used.

*MAX: A link speed greater than 16M bps is used.

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, 4M, 10M, and 16M.