Create Device Desc (NWSH) (CRTDEVNWSH)
| Where allowed to run: All environments (*ALL) Threadsafe: No |
Parameters Examples Error messages |
The Create Device Description (NWSH) (CRTDEVNWSH) command creates a device description for a network server host adapter (NWSH) device.
Restriction: You must have input/output system configuration (*IOSYSCFG) special authority to use this command.
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Parameters
| Keyword | Description | Choices | Notes |
|---|---|---|---|
| DEVD | Device description | Name | Required, Key, Positional 1 |
| RSRCNAME | Resource name | Name, *VRT | Required, Key, Positional 2 |
| LCLIFC | Local (target) interface | Element list | Required, Positional 3 |
| Element 1: Subnet mask | Character value, *NONE | ||
| Element 2: Port speed | *AUTO | ||
| Element 3: Duplex | *AUTO | ||
| Element 4: Local SCSI interface | Element list | ||
| Element 1: Internet address | Character value | ||
| Element 2: Gateway address | Character value, *NONE | ||
| Element 3: SCSI TCP port | 1024-65535, 3260, 860 | ||
| Element 5: Local LAN interface | Element list | ||
| Element 1: Internet address | Character value, *IPSCSI | ||
| Element 2: Gateway address | Character value, *NONE | ||
| Element 3: Virtual Ethernet base UDP port | 1024-65471, 8801 | ||
| Element 6: Cable connection | *NETWORK, *DIRECT | ||
| ONLINE | Online at IPL | *NO, *YES | Optional |
| MSGQ | Message queue | Single values: *SYSOPR Other values: Qualified object name |
Optional |
| Qualifier 1: Message queue | Name | ||
| Qualifier 2: Library | Name, *LIBL, *CURLIB | ||
| 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 | ||
| TEXT | Text 'description' | Character value, *BLANK | Optional |
| AUT | Authority | Name, *CHANGE, *ALL, *USE, *EXCLUDE, *LIBCRTAUT | Optional |
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Device description (DEVD)
Specifies the name of the device description.
This is a required parameter.
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Resource name (RSRCNAME)
Specifies the resource name that identifies the hardware that the description represents.
Use the Work with Hardware Resources (WRKHDWRSC) command with TYPE(*CMN) specified to determine the resource name.
This is a required parameter.
- *VRT
-
The resource name will represent virtual (not physical) hardware.
- name
Specify the Network Server Host Port resource name.
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Local (target) interface (LCLIFC)
Specifies the local (target) interface configuration for a network server host adapter.
This is a required parameter.
Element 1: Subnet mask
Specifies the subnet mask associated with the local interface. Subnetting provides the capability to partition an internet domain.
Note: If *VRT is specified for the Resource name (RSRCNAME) parameter, then *NONE must be specified.
- *NONE
There is no subnet mask.
Note: *NONE is valid only when RSRCNAME(*VRT) is specified.
- character-value
Specify the mask for the network subnet and host address fields of the internet address that defines a subnet. The subnet mask is in the form, nnn.nnn.nnn.nnn, where nnn is a decimal number ranging from 0 through 255. The subnet mask must mask off all bits of the network class's network ID portion of the internet address. For example, a subnet mask of 255.255.255.0 defines a Class B subnet consisting of all bits in the network portion of the internet address (this is a given) and consisting of all bits in the third byte of an internet address. If the subnet mask is entered from a command line, it must be enclosed in apostrophes.
Element 2: Port speed
Specifies the speed of the port described by this local interface.
Note: If *VRT is specified for the Resource name (RSRCNAME) parameter, this element is not used.
- *AUTO
The hardware automatically determines the port speed.
Element 3: Duplex
Specifies the duplex mode used by the port described by this local interface.
Note: If *VRT is specified for the Resource name (RSRCNAME) parameter, this element is not used.
- *AUTO
The hardware automatically determines the duplex.
Element 4: Local SCSI interface
Specifies the local Small Computer System Interface (SCSI) configuration.
Element 1: Internet address
Specifies the local internet address which the SCSI interface on the network server host adapter responds to.
- character-value
The internet address is specified in the form, nnn.nnn.nnn.nnn, where nnn is a decimal number ranging from 0 through 255. An internet address that has a binary value of all ones or all binary zeros for the network identifier (ID) portion or the host ID portion of the internet address is not valid. The internet address selected must be unique across the network. If the local internet address is entered from a command line, the address must be enclosed in apostrophes.
Element 2: Gateway address
Specifies the gateway address for the internet address associated with the SCSI interface.
Note: If *VRT is specified for the Resource name (RSRCNAME) parameter, then *NONE must be specified.
- *NONE
There is no gateway address.
- character-value
The gateway address is in the form ddd.ddd.ddd.ddd where ddd is a decimal number ranging from 0 to 255. If the gateway address is entered from a command line, the address must be enclosed in apostrophes.
Element 3: SCSI TCP port
Specifies the local SCSI TCP port that the local SCSI interface will listen on for iSCSI traffic. The local SCSI interface internet address and TCP port together define an iSCSI target portal.
- 3260
Port 3260 will be used as the local SCSI TCP port.
- port-number
The well-known TCP port number for iSCSI connections assigned by Internet Assigned Numbers Authority (IANA) is 3260 and this is the default iSCSI port number. The TCP port assigned by IANA as the iSCSI system port is 860. Valid values are 860 and the range 1024 through 65535.
Element 5: Local LAN interface
Specifies a local Local Area Network (LAN) interface configuration.
Element 1: Internet address
Specifies the local internet address which the LAN interface on the network server host adapter responds to.
Note: If *VRT is specified for the Resource name (RSRCNAME) parameter, then *IPSCSI must be specified.
- *IPSCSI
The local LAN internet address is the same as the the local SCSI internet address.
Note: *IPSCSI is valid only when RSRCNAME(*VRT) is specified.
- character-value
The internet address is specified in the form, nnn.nnn.nnn.nnn, where nnn is a decimal number ranging from 0 through 255. An internet address that has a binary value of all ones or all binary zeros for the network identifier (ID) portion or the host ID portion of the internet address is not valid. The internet address selected must be unique across the network. If the local internet address is entered from a command line, the address must be enclosed in apostrophes.
Element 2: Gateway address
Specifies the gateway address for the internet address associated with the LAN interface.
Note: If *VRT is specified for the Resource name (RSRCNAME) parameter, then *NONE must be specified.
- *NONE
There is no gateway address.
- character-value
The gateway address is in the form ddd.ddd.ddd.ddd where ddd is a decimal number ranging from 0 to 255. If the gateway address is entered from a command line, the address must be enclosed in apostrophes.
Element 3: Virtual Ethernet base UDP port
Specifies the lowest numbered User Datagram Protocol (UDP) port that the local LAN interface will use for virtual Ethernet communication with the remote server.
- 8801
Port 8801 will be used as the Virtual Ethernet base UDP port.
- 1024-65471
Virtual Ethernet communication is encapsulated in UDP packets. Each virtual Ethernet adapter is automatically assigned a UDP port from a range that begins at the specified base port number and ends at the base port number plus the number of configured virtual Ethernet adapters. Valid values are the range 1024 through 65471.
Element 6: Cable connection
Specifies the type of cable connection used by this local interface.
- *NETWORK
- The cable for this local interface is connected to a network.
- *DIRECT
- The cable for this local interface is connected directly to an interface on the remote system.
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Online at IPL (ONLINE)
Specifies whether this object is automatically varied on at initial program load (IPL).
Notes:
- If *VRT is specified for the Resource name (RSRCNAME) parameter, then the value *NO is used.
- A network server host adapter (NWSH) device with RSRCNAME(*VRT) cannot be varied on until the TCP/IP interfaces are started.
- *NO
This device is not varied on automatically at IPL.
- *YES
This device is varied on automatically at IPL.
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Message queue (MSGQ)
Specifies the message queue to which operational messages for this device are sent.
Single values
- *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
- *LIBL
All libraries in the job's library list are searched until the first match is found.
- *CURLIB
The current library for the job is searched. If no library is specified as the current library for the job, the QGPL library is used.
- name
Specify the name of the library to be searched.
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Recovery limits (CMNRCYLMT)
Specifies the communications recovery limits to be used for this device description.
Note: If *VRT is specified for the Resource name (RSRCNAME) parameter, this parameter is ignored.
Single values
- *SYSVAL
The recovery limits specified in the system value QCMNRCYLMT are used.
Element 1: Count limit
- 2
Two recovery attempts are made within the specified time interval.
- 0-99
Specify the number of recovery attempts to be performed by the system.
Element 2: Time interval
- 5
The specified number of recovery attempts are made within a 5-minute interval.
- 0-120
Specify the number of minutes within which recovery attempts are made.
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Text 'description' (TEXT)
Specifies the text that briefly describes the object.
- *BLANK
- No text is specified.
- character-value
- Specify no more than 50 characters of text, enclosed in apostrophes.
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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.
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Examples
Example 1: Create a network server host adapter description
CRTDEVNWSH DEVD(DEVNWSH) RSRCNAME(CMN03)
LCLIFC('255.255.255.128' *AUTO *AUTO
('9.5.149.241' '9.5.149.129' 3260)
('9.5.149.245' '9.5.149.122' 8801)
*DIRECT)
This command creates a network server host adapter description named DEVNWSH. DEVNWSH has an associated resource named CMN03. The local SCSI and the local LAN interfaces will have the specified TCP/IP internet addresses assigned. The local SCSI interface will use the default TCP port value, which is the well-known user TCP port number for iSCSI connections assigned by IANA. The local LAN interface will use the default virtual Ethernet base UDP port value. The hardware will determine the port speed and duplex. The cable for this local SCSI interface is connected directly to an interface on the remote system.
Example 2: Create a virtual network server host adapter description
CRTDEVNWSH DEVD(VRTNWSH) RSRCNAME(*VRT)
LCLIFC(*NONE *AUTO *AUTO
('9.5.149.241' *NONE 3260)
(*IPSCSI *NONE 8801)
*NETWORK)
This command creates a virtual network server host adapter description named VRTNWSH. The resource represents virtual (not physical hardware). The local SCSI interface will have the specified TCP/IP internet address assigned. The local LAN internet address will be the same as the local SCSI address. The local SCSI interface will use the default TCP port value, which is the well-known user TCP port number for iSCSI connections assigned by IANA. The local LAN interface will use the default virtual Ethernet base UDP port value.
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