Change Line Desc (Ethernet) (CHGLINETH)

Where allowed to run: All environments (*ALL)
Threadsafe: No

The Change Line Description (Ethernet) (CHGLINETH) command changes a line description for an Ethernet line. More information about using this command is in the Communications Configuration book, SC41-5401.

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Parameters

Keyword	Description	Choices	Notes
LIND	Line description	Name	Required, Key, Positional 1
RSRCNAME	Resource name	Name, SAME, NWID, *NWSD	Optional
ONLINE	Online at IPL	SAME, YES, *NO	Optional
VRYWAIT	Vary on wait	15-180, NOWAIT, SAME	Optional
ASSOCPORT	Associated port resource name	Name, SAME, NONE	Optional
ADPTADR	Local adapter address	Character value, SAME, ADPT	Optional
GRPADR	Group address	Single values: SAME, NONE Other values (up to 12 repetitions): 010000000000-FDFFFFFFFFFF	Optional
MAXCTL	Maximum controllers	1-256, *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	265-8996, *MAXFRAME, 265, 521, 1033, 1466, 1493, 1496, 8996
	Element 3: SSAP type	CALC, NONSNA, SNA, HPR
THRESHOLD	Error threshold level	SAME, OFF, MIN, MED, *MAX	Optional
GENTSTFRM	Generate test frame	SAME, YES, *NO	Optional
PVCID	PVC identifiers	Single values: SAME Other values: Element list*	Optional
	Element 1: Virtual path identifier	0-7
	Element 2: Virtual circuit identifier	32-4095
USELECSADR	Use LECS address	SAME, YES, *NO	Optional
LESATMADR	LES ATM address	Single values: SAME, NONE Other values: Element list	Optional
	Element 1: Network prefix	Hexadecimal value
	Element 2: End system identifier	Hexadecimal value
	Element 3: Selector byte	Hexadecimal value
EMLLANNAME	Emulated LAN name	Character value, SAME, NONE	Optional
LECDSCTIMO	LEC disconnect time out	1-30, SAME, NOMAX	Optional
LINKSPEED	Link speed	1200-603979776000, MIN, SAME, 4M, 10M, 16M, 100M, *MAX	Optional
LINESPEED	Line speed	Character value, SAME, 10M, 100M, 1G, AUTO	Optional
DUPLEX	Duplex	Character value, SAME, HALF, FULL, AUTO	Optional
MAXFRAME	Maximum frame size	1496-8996, *SAME, 1496, 8996	Optional
COSTCNN	Cost/connect time	0-255, *SAME	Optional
COSTBYTE	Cost/byte	0-255, *SAME	Optional
SECURITY	Security for line	SAME, NONSECURE, PKTSWTNET, UNDGRDCBL, SECURECND, GUARDCND, ENCRYPTED, MAX	Optional
PRPDLY	Propagation delay	SAME, LAN, MIN, TELEPHONE, PKTSWTNET, SATELLITE, *MAX	Optional
USRDFN1	User-defined 1	0-255, *SAME	Optional
USRDFN2	User-defined 2	0-255, *SAME	Optional
USRDFN3	User-defined 3	0-255, *SAME	Optional
AUTOCRTCTL	Autocreate controller	YES, NO, *SAME	Optional
AUTODLTCTL	Autodelete controller	1-10000, NONE, SAME	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

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Line description (LIND)

Specifies the name of the line description

This is a required parameter.

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Resource name (RSRCNAME)

Specifies the resource name that identifies the communications port.

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 *NWSD to another value or from another value to *NWSD.

*SAME: The value does not change.

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

*NWSD: The resource name is determined by the network server used.

name: Specify the resource name of the communications port.

This is a required parameter.

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Online at IPL (ONLINE)

Specifies whether this object is automatically varied on at initial program load (IPL).

*SAME: The value does not change.

*YES: The line is automatically varied on at initial program load (IPL).
*NO: This line is not automatically varied on at IPL.

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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.

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Associated port resource name (ASSOCPORT)

Specifies the resource name that describes the port that is used to establish a connection between a Windows network server and the network.

Note: ASSOCPORT parameter is only valid when RSRCNAME(*NWSD) is specified.

*SAME: The value does not change.

*NONE: An associated port resource name is not associated with the line.

name: Specify the resource name.

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Local adapter address (ADPTADR)

Specifies the 12-character hexadecimal adapter address.

*SAME: The value does not change.

*ADPT

The preset default address for this Ethernet adapter card is used.

Note: This value is not valid when RSRCNAME(*NWID) and NWITYPE(*FR) is specified.

Note: *ADPT must be specified when the NWS parameter specifies a virtual ethernet port number, *VRTETHPTP or *VRTETHn where n is 0-9.

local-adapter-address

Specify an adapter address of your choice to describe this system in the Ethernet network. The value specified must be an individual address that is locally administered. Valid values are *ADPT or hexadecimal 020000000000 through FEFFFFFFFFFF. The second digit must be 2, 6, A, or E.

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Group address (GRPADR)

A group address is an address to which a subset of nodes on the Ethernet line will respond in addition to their local adapter addresses.

*SAME: The value does not change.

*NONE: No group addresses are defined.
group-address: Specify a group address of your choice to describe this system in the Ethernet network. Valid values are hexadecimal 010000000000 through FDFFFFFFFFFF. The second digit of the value specified must be 1, 3, 5, 7, 9, B, D, or F. Up to 12 addresses may be specified.

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Maximum controllers (MAXCTL)

Specifies the maximum number of controllers that the line supports.

*SAME: The value does not change.

40: The number of controllers is 40.
maximum-controllers: Specify value ranging from 1 to 256. The number must be large enough to account for all of the SNA controllers that are currently active to this line, and for those controllers you know will be attached in the near future.

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SSAP list (SSAP)

Specifies the source service access point (SSAP) information, including an SSAP value, a maximum frame size, and an SSAP type.

You can enter multiple values for this parameter.

The possible source service access point values are:

*SAME: The value does not change.

*SYSGEN

The system determines the source service access points.

If ETHSTD(*ALL) or ETHSTD(*IEEE8023) is specified, the system generates the SSAPs 04, 12, AA, and C8.
If ETHSTD(*ETHV2) is specified, the system generates the SSAPs 04 and 08

source-service-access-point

Specify a service access point for receiving and transmitting data. The SSAP must be hexadecimal 06 or AA for TCP/IP applications if ETHSTD is *ALL or *IEEE8023 (06 and AA are not allowed when ETHSTD is *ETHV2; however, TCP/IP can still be run). For SNA applications, specify a value ranging from 04 through 9C in multiples of four. For example, 7C is a valid choice. For non-SNA applications, specify a value ranging from 02 through FE in multiples of 2.

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 Transmission Control Protocol/Internet Protocol (TCP/IP) applications, the SSAP must be AA.
Note: If ETHSTD(*ETHV2) is specified, AA cannot be specified. However, TCP/IP can be run.

For Systems Network Architecture (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 high-performance routing (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).
For LAN printing applications, specify a SSAP value of 12 with SSAP type of *NONSNA.

The possible SSAP maximum frame size values are:

*MAXFRAME: The system determines the maximum frame size (data field size) that can be transmitted or received. If ETHSTD(*ALL or *IEEE8023) was specified, *CALC produces a frame size of 1496 for TCP/IP and SNA SSAPs. If ETHSTD(*ETHV2) was specified, *CALC produces a frame size of 1493 for SNA SSAPs.
SSAP-maximum-frame: Specify a maximum frame size for this SSAP. Valid values range from 265 through 8996 (265 through 1493 for SNA SSAPs when *ETHV2 is specified on the Ethernet standard (ETHSTD) parameter).
Note: When *NWID is specified on the Resource name (RSRCNAME) parameter and *ETHV2 is specified on the ETHSTD parameter, the valid values for this parameter range from 265 through 1486 bytes. When *NWID is specified on the RSRCNAME parameter, and *ALL or *IEEE8023 is specified on the ETHSTD parameter, the valid values for this parameter range from 265 through 1489 bytes. Maximum frame size larger than 1486 or 1489 is valid only when AA SSAP for TCP/IP is specified.

The possible SSAP type values are:

*CALC: The system determines the SSAP type based on the SSAP value specified.
*SNA: The system uses IBM's Systems Network Architecture for communication. Only SSAP values of 04 through 9C in multiples of 4 are supported.
*NONSNA: The system does not use SNA communications. Only SSAP values of 02 through FE in multiples of 2 are supported.
*HPR: The SSAP is used for HPR communications. It also can be used for SNA applications. The valid value is hex C8.

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Error threshold level (THRESHOLD)

This parameter, and its values *SAME, *OFF, *MIN, *MED, and *MAX, can be specified but it is not used by the system starting in release V2R3M0. The parameter may be removed in a later release.

*SAME: The value does not change.

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Generate test frame (GENTSTFRM)

Specifies whether the system will automatically generate test frames to determine network availability.

*SAME: The value does not change.

*YES: The system will generate test frames.
*NO: The system will not generate test frames.

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Note: This parameter is no longer supported. It exists solely for compatibility with releases earlier than Version 5 Release 3 Modification 0 of the operating system.

PVC identifiers (PVCID)

Specifies the virtual path identifier and virtual circuit identifier pairs associated with this permanent virtual circuit.

*SAME: The value does not change.

The possible Virtual Path Identifier value is:

virtual-path-id: Specify a number that represents the virtual path identifier. This number must be in the range of 0 to 7.

The possible Virtual Circuit Identifier value is:

virtual-circuit-id: Specify a number that represents the virtual circuit identifier. This number must be in the range of 32 to 4095.

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Note: This parameter is no longer supported. It exists solely for compatibility with releases earlier than Version 5 Release 3 Modification 0 of the operating system.

Use LECS address (USELECSADR)

Specifies whether the LAN emulation configuration server (LECS) should be connected to request the remote LAN emulation server (LES) address.

*SAME: The value does not change.

*YES: The LECS address is used.
*NO: The LECS address is not used.

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Note: This parameter is no longer supported. It exists solely for compatibility with releases earlier than Version 5 Release 3 Modification 0 of the operating system.

LES ATM address (LESATMADR)

Specifies the ATM network address of the remote LAN emulation server.

Note: This parameter cannot be *NONE if USELECSADR(*NO) is specified.

*SAME: The value does not change.

The possible Single Value is:

*NONE: The ATM network address is not used.

The possible Network prefix value is:

network-prefix: Specify the network prefix of the ATM address of the remote server. This is a 26 digit hexadecimal value.

The possible End system identifier value is:

end-system-identifier: Specify the end system identifier of the remote server. This is a 12 digit hexadecimal value.

The possible Selector byte value is:

selector byte: Specify the selector byte of the remote server. This is a two digit hexadecimal value.

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Note: This parameter is no longer supported. It exists solely for compatibility with releases earlier than Version 5 Release 3 Modification 0 of the operating system.

Emulated LAN name (EMLLANNAME)

Specifies the emulated LAN name.

*SAME: The value does not change.

*NONE: The emulated LAN name not used.
emulated-LAN-name: Specify the emulated LAN name. A maximum of 32 characters can be specified.

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Note: This parameter is no longer supported. It exists solely for compatibility with releases earlier than Version 5 Release 3 Modification 0 of the operating system.

LEC disconnect time out (LECDSCTIMO)

Specifies the amount of time in minutes a LAN emulation (LE) client waits before disconnecting an idle virtual circuit connection to another client.

*SAME: The value does not change.

*NOMAX: The LE client waits indefinitely.
LEC-disconnect-timeout: Specify the number of minutes the LE client waits before disconnecting an idle virtual circuit connection to another client. The value must be in the range of 1 to 30 minutes.

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Link speed (LINKSPEED)

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

*SAME: The value does not change.

10M: The link speed is 10 million bits per second.
4M: The link speed is 4 million bits per second.
16M: The link speed is 16 million bits per second.
100M: The link speed is 100 million bits per second.

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

*MAX: A link speed greater than 100M bps is used.

link-speed: Specify the link speed. Valid values range from 1200 to 603979776000 bps.

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Line speed (LINESPEED)

Specifies the line speed in bits per second (bps).

*SAME: The value does not change.

10M: The line speed is 10 million bits per second.
100M: The line speed is 100 million bits per second.
1G: The line speed is 1 gigabit per second(1000 million bits per second).
Note: The value 1G specifies gigabit ethernet. Gigabit ethernet is only available when running strictly TCP/IP protocol. 1G must be specified when the NWS parameter specifies a virtual ethernet port number, *VRTETHPTP or *VRTETHn where n is 0-9.
*AUTO: The line speed value will be determined by the hardware using auto-negotiation.

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Duplex (DUPLEX)

Specifies whether the hardware can send and receive data simultaneously. In half duplex mode, the hardware must alternate between sending data and receiving data. In full duplex mode, one cable is dedicated to send data and another cable is dedicated to receive data. Therefore, data can be sent and received simultaneously. A hub is required for full duplex.

Note: For optimum performance, this setting should match the setting on the switch or hub this line is connected to. Refer to iSeries Information Center at http://www.ibm.com/eserver/iseries/infocenter for more information.

*SAME: The value does not change.

*HALF: The line communicates using half duplex mode.
*FULL: The line communicates using full duplex mode.
Note: *FULL must be specified when the NWS parameter specifies a virtual ethernet port number, *VRTETHPTP or *VRTETHn where n is 0-9.

*AUTO: The duplex value will be determined by the hardware using auto-negotiation.

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Maximum frame size (MAXFRAME)

Specifies the maximum frame size that can be transmitted and received on this line description.

*SAME: The value does not change.

1496: The maximum frame size is 1496 bytes.
maximum-frame-size: Specify the maximum frame size value to be used. The valid frame sizes (in bytes) range from 1496 through 8996.

Note: When RSRCNAME(*NWID) specified, the only valid value for this parameter is 1496 bytes. If the maximum frame size is greater than 1496 bytes, LINESPEED(1G) or LINSPEED(*AUTO) and DUPLEX(*FULL) or DUPLEX(*AUTO) must be specified. 8996 is recommended when the NWS parameter specifies a virtual ethernet port number, *VRTETHPTP or *VRTETHn where n is 0-9.

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Cost/connect time (COSTCNN)

Specifies the relative cost of being connected on the line. This parameter is required only if APPN is used on the system.

*SAME: The value does not change.

cost-per-connect-time: Specify a value ranging from 0 through 255.

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Cost/byte (COSTBYTE)

Specifies the relative cost per byte for sending and receiving data on the line. This parameter is required only if APPN is used on the system.

*SAME: The value does not change.

cost-per-byte: Specify a value ranging from 0 through 255.

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Security for line (SECURITY)

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

*SAME: The value does not change.

*NONSECURE: There is no security on the line.
*PKTSWTNET: A packet switched network is used. Data does not always follow the same path through the network.
*UNDRGRDCBL: An underground cable is used.
*SECURECND: A secure, but unguarded, conduit is used.
*GUARDCND: A guarded conduit, 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.

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Propagation delay (PRPDLY)

Specifies the level of propagation delay on the line. This parameter is valid only if advanced peer-to-peer networking (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: Propagation delay using a local area network.

*MIN: The minimum propagation delay is used.

*TELEPHONE: Propagation delay using telephone lines.
*PKTSWTNET: Propagation delay using a packet switched network.
*SATELLITE: Propagation delay using satellite communications.

*MAX: The maximum propagation delay is used.

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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.

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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.

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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.

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Autocreate controller (AUTOCRTCTL)

Specifies whether the system automatically creates an advanced program-to-program communications (APPC) controller description when an incoming advanced peer-to-peer networking (advanced peer-to-peer networking (APPN)) call is received from an adjacent system on the Local Area Network (LAN).

*SAME: The value does not change.

*NO: A controller description is not automatically created for this line.
*YES: A controller description is automatically created for this line.

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Autodelete controller (AUTODLTCTL)

Specifies how many minutes the system waits before automatically varying off and deleting automatically created advanced program-to-program communications (APPC) controller descriptions (associated with this line) which have gone to an idle state.

*SAME: The value does not change.

*NONE: The controller descriptions for this line are not automatically deleted.
auto-delete-controller: Specify a value ranging from 1 through 10000 minutes. The value 1440 is 24 hours.

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Recovery limits (CMNRCYLMT)

Specifies the second-level communications recovery limits to be used for this line description.

The possible count-limit values are:

*SAME: The value does not change.

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

count-limit: Specify the number of recovery attempts to be performed by the system. Valid values range from 0 through 99.

The possible time-interval values are:

*SAME: The value does not change.

time-interval: Specify the number of minutes within which recovery attempts are made. Valid values range from 0 through 120 in 1-minute intervals.

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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.

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Text 'description' (TEXT)

Specifies text that briefly describes the line description.

*SAME: The value does not change.

*BLANK: Text is not specified.
character-value: Specify no more than 50 characters of text, enclosed in apostrophes.

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Examples

Example 1: Changing an Ethernet Line Description

CHGLINETH   LIND(BOSTON)  RSRCNAME(LIN041)

This command changes the resource name of an Ethernet line description named BOSTON to LIN041.

Example 2: Changing an Ethernet Line Description

CHGLINETH   LIND(LINETH)  MAXFRAME(1496)

This command changes the maximum frame size of the Ethernet line description to 1496 bytes.

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Error messages

*ESCAPE Messages

CPF261E: Line description &1 not changed.

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