| Where allowed to run: All environments (*ALL) Threadsafe: No |
Parameters Examples Error messages |
The Change Controller Description (Retail) (CHGCTLRTL) command changes a controller description for a retail controller.
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| Keyword | Description | Choices | Notes |
|---|---|---|---|
| CTLD | Controller description | Name | Required, Key, Positional 1 |
| ONLINE | Online at IPL | *SAME, *YES, *NO | Optional |
| ACTSNBU | Activate swt network backup | *SAME, *YES, *NO | Optional |
| SWTLINLST | Switched line list | Single values: *SAME Other values (up to 64 repetitions): Name |
Optional |
| CODE | Character code | *SAME, *EBCDIC, *ASCII | Optional |
| MAXFRAME | Maximum frame size | 265-1994, 256, 265, 512, 521, 1024, 1033, 1994, *SAME, *LINKTYPE | Optional |
| SSCPID | SSCP identifier | 000000000001-FFFFFFFFFFFF, *SAME | Optional |
| INLCNN | Initial connection | *SAME, *ANS, *DIAL | Optional |
| CNNNBR | Connection number | Character value, *SAME, *ANY | Optional |
| ANSNBR | Answer number | *SAME, *CNNNBR, *ANY | Optional |
| PREDIALDLY | Predial delay | 0-254, *SAME | Optional |
| REDIALDLY | Redial delay | 0-254, *SAME | Optional |
| DIALRTY | Dial retry | 0-254, *SAME | Optional |
| SWTDSC | Switched disconnect | *SAME, *YES, *NO | Optional |
| STNADR | Station address | 01-FE, *SAME | Optional |
| POLLPTY | SDLC poll priority | *SAME, *YES, *NO | Optional |
| POLLLMT | SDLC poll limit | 0-4, *SAME | Optional |
| OUTLMT | SDLC out limit | *SAME, *POLLLMT, 0, 1, 2, 3, 4 | Optional |
| CNNPOLLRTY | SDLC connect poll retry | 0-65534, *SAME, *CALC, *NOMAX | Optional |
| NDMPOLLTMR | SDLC NDM poll timer | 0-3000, *SAME, *CALC | Optional |
| ADPTADR | LAN remote adapter address | 000000000001-FFFFFFFFFFFF, *SAME | Optional |
| DSAP | LAN DSAP | *SAME, 04, 08, 0C, 10, 14, 18, 1C, 20, 24, 28, 2C, 30, 34, 38, 3C, 40, 44, 48, 4C, 50, 54, 58, 5C, 60, 64, 68, 6C, 70, 74, 78, 7C, 80, 84, 88, 8C, 90, 94, 98, 9C | Optional |
| SSAP | LAN SSAP | *SAME, 04, 08, 0C, 10, 14, 18, 1C, 20, 24, 28, 2C, 30, 34, 38, 3C, 40, 44, 48, 4C, 50, 54, 58, 5C, 60, 64, 68, 6C, 70, 74, 78, 7C, 80, 84, 88, 8C, 90, 94, 98, 9C | Optional |
| LANFRMRTY | LAN frame retry | 0-254, *SAME, *CALC | Optional |
| LANCNNRTY | LAN connection retry | 0-254, *SAME, *CALC | Optional |
| LANRSPTMR | LAN response timer | 0-254, *SAME, *CALC | Optional |
| LANCNNTMR | LAN connection timer | 0-254, *SAME, *CALC | Optional |
| LANACKTMR | LAN acknowledgement timer | 0-254, *SAME, *CALC | Optional |
| LANINACTMR | LAN inactivity timer | 0-255, *SAME, *CALC | Optional |
| LANACKFRQ | LAN acknowledgement frequency | 0-127, *SAME, *CALC | Optional |
| LANMAXOUT | LAN max outstanding frames | 1-127, *SAME, *CALC | Optional |
| LANACCPTY | LAN access priority | 0-3, *SAME, *CALC | Optional |
| LANWDWSTP | LAN window step | 1-127, *NONE, *SAME | Optional |
| NETLVL | X.25 network level | *SAME, 1980, 1984, 1988 | Optional |
| CNNPWD | X.25 connection password | Character value, *SAME, *NONE | Optional |
| SWTLINSLCT | X.25 switched line selection | *FIRST, *CALC, *SAME | Optional |
| DFTPKTSIZE | X.25 default packet size | Element list | Optional |
| Element 1: Transmit value | *SAME, *LIND, 64, 128, 256, 512, 1024, 2048, 4096 | ||
| Element 2: Receive value | *SAME, *LIND, *TRANSMIT, 64, 128, 256, 512, 1024, 2048, 4096 | ||
| DFTWDWSIZE | X.25 default window size | Element list | Optional |
| Element 1: Transmit value | 1-15, *SAME, *LIND | ||
| Element 2: Receive value | 1-15, *SAME, *LIND, *TRANSMIT | ||
| USRGRPID | X.25 user group identifier | Character value, *SAME, *NONE | Optional |
| RVSCRG | X.25 reverse charging | *SAME, *NONE, *REQUEST, *ACCEPT, *BOTH | Optional |
| X25FRMRTY | X.25 frame retry | 0-21, *SAME | Optional |
| X25CNNRTY | X.25 connection retry | 0-21, *SAME | Optional |
| X25RSPTMR | X.25 response timer | 1-2550, *SAME | Optional |
| X25CNNTMR | X.25 connection timer | 1-2550, *SAME | Optional |
| X25DLYTMR | X.25 delayed connection timer | 1-32767, *SAME, *CALC | Optional |
| USRFCL | User facilities | Character value, *SAME, *NONE | Optional |
| CMNRCYLMT | Recovery limits | Single values: *SAME, *SYSVAL Other values: Element list |
Optional |
| Element 1: Count limit | 0-99 | ||
| Element 2: Time interval | 0-120 | ||
| TEXT | Text 'description' | Character value, *SAME, *BLANK | Optional |
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This is a required parameter.
Specifies the name of the controller description.
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Specifies whether this object is automatically varied on at initial program load (IPL).
This value does not change.
The controller is automatically varied on at IPL.
The controller is not automatically varied on at IPL.
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Specifies, for modems that support the switched network backup (SNBU) feature and that are not IBM 386x, 586x, or 786x models, whether the SNBU feature is activated or deactivated. The local modem and remote modem must both support the SNBU to activate it. IBM 386x, 586x, and 786x models are activated with a hardware switch only. This feature lets you bypass a broken nonswitched connection (nonswitched line) by establishing a switched connection.
This value does not change.
The SNBU feature is not used.
The SNBU feature is activated. You must also specify a value of *YES for the Activate swt network backup (ACTSNBU) parameter for the line.
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Specifies the names of the switched lines to which this controller attaches. The line descriptions must already exist. Up to 64 switched line names can be specified.
This value does not change.
Specify the names of up to 64 lines that are connected to this controller. The same line name can be used more than once. For each line name specified, a line description by that name must already exist.
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Specifies whether the extended binary-coded decimal interchange code (*EBCDIC) or the American National Standard Code for Information Interchange (*ASCII) character code is used on the line.
This value does not change.
The extended binary-coded decimal interchange code (EBCDIC) character code is used.
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Specifies the maximum frame (path information unit (PIU)) size the controller can send or receive. This value is used to calculate the 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.
This value does not change.
The frame size is 521 bytes for *SDLC, 1024 bytes for *X25, and 1994 bytes for *LAN.
Specify either 521, 1033, or 1994 bytes as the maximum frame size for this controller. Specify 1024 only if linktype is *X25. Specify 1994 only if linktype is *LAN.
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Specifies the system service control point identifier of the host system.
This value does not change.
Specify the system service control point identifier as a 12-digit hexadecimal value.
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Specifies the method used to establish a connection with this controller.
This value does not change.
The system initiates outgoing calls and answers incoming calls.
The connection is made by the iSeries system when it answers an incoming call from this controller. If a call is received from the remote controller and all necessary conditions are met, the incoming call is answered by the system.
For X.25 connections, the line attached to the controller requires switched virtual circuits (SVCs) configured on the LGLCHLE parameter of type OUT or BOTH(*SVCOUT or *SVCBOTH) for the connection to succeed.
The line can be changed using the Change Line Description (X.25) (CHGLINX25) command.
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Specifies the telephone number to dial to connect to this controller.
This value does not change.
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Specifies the X.25 network address from which calls are accepted.
This value does not change.
Calls from the X.25 network address specified on the CNNNBR parameter are accepted.
Calls are accepted from any X.25 network address.
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Specifies the time interval to wait (in 0.5 second intervals) before dialing a number.
This value does not change.
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Specifies the time interval to wait (in 0.5 second intervals) before re-dialing when the call attempt is unsuccessful.
This value does not change.
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Specifies the number of re-dial attempts made by the system before considering the dialing unsuccessful.
This value does not change.
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Specifies whether the switched connection to this controller is dropped when the last device is varied off.
This value does not change.
The switched connection is not dropped when the last device is varied off.
The switched connection is varied off when the last device is varied off.
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Specifies the station address used when communicating with the controller.
Valid values range from 00 to FE.
Note: 00 can be specified only for APPC controllers when *TDLC is specified for the Link type (LINKTYPE) parameter.
Note: If *SEC is specified on the ROLE parameter, this is the station address of the remote controller. If *PRI or *NEG is specified on the ROLE parameter, this is the local station address.
This value does not change.
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Specifies whether this controller has priority when polled. This parameter can be specified only if SHM is *NO.
This value does not change.
This controller does not have polling priority.
This controller does have polling priority.
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Specifies, for an SDLC secondary or negotiable controller, the number of consecutive polls issued to the same controller when the poll results in receiving frames. This parameter can be specified only if SHM is *NO.
This value does not change.
The default number of polls is zero.
Specify a number of polls. Valid values range from 0 through 4.
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Specifies the number of consecutive times SDLC allows the transmission of the maximum number of frames to a station, before allowing transmission to another station.
This value does not change.
The value is the same as the one specified for the SDLC poll limit (POLLLMT) parameter.
Specify a value ranging from 0 through 4.
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Specifies the number of times to retry connecting to a controller before reporting an error.
This value does not change.
The number of retries is 7 if the controller is switched, and *NOMAX if the controller is nonswitched.
The system will retry indefinitely.
Specify a value ranging from 0 to 65534 for the number of retries.
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Specifies the minimum interval at which a secondary station should be polled if a poll from the primary to the secondary (which is in normal disconnect mode (NDM)) does not result in receiving the appropriate response.
This parameter is valid only if the link type is *SDLC and the controller role is secondary or negotiable and *NO is specified on the SHM parameter.
This value does not change.
The poll interval is calculated by the system.
Specify a value ranging from 1 to 3000 units. Each unit represents 0.1 second. To indicate no timer, specify 0.
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Specifies the 12-character adapter address of the remote controller. This is the address to which the system sends data when it communicates with the remote controller. This value can be obtained from the remote controller's configuration record. Valid values range from hex 000000000001 through hex FFFFFFFFFFFF.
This value does not change.
Specify the adapter address of the remote controller.
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Specifies the destination service access point (DSAP). This is the logical address this system will send to when it communicates with the remote controller. This address allows the controller to properly route the data that comes from this system. The default value for the destination service access point is 04.
The value must match the value specified on the source service access point (SSAP) parameter in the remote controller's configuration record.
This value does not change.
Specify a hexidecimal value ranging from 04 through 9C, in increments of 4 (for example, 04, 08, 0C, 10) to represent the destination service access point.
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Specifies the source service access point (SSAP). This is the logical address the local system uses when it sends data to the remote controller. This address allows the controller to properly route the data that comes from the local system. The default value for the source service access point is 04.
It must match the value assigned to the destination service access point (DSAP) in the remote controller's configuration record.
This value does not change.
Specify a hexadecimal value ranging from 04 through 9C, in increments of 4 (for example, 04, 08, 0C, 10) to represent the source service access point.
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Specifies the number of times to retry a transmission when there is no acknowledgment from the remote controller in the time period specified by the LANRSPTMR parameter. This value is only used after a successful connection has been made.
This value does not change.
The system determines the LAN frame retry value based on the type of line that is lined to the controller.
Specify a value ranging from 0 through 254 for the number of times a frame is transmitted before an acknowledgement is received.
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Specifies the number of times a transmission is attempted before an acknowledgement is received. This value is used at connection time (unlike LANFRMRTY which is used after a connection has been made).
This value does not change.
The system determines the LAN connection retry value.
Specify a value ranging from 0 through 254 for the number of times the transmission is attempted before an acknowledgement is received.
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Specifies the time period used to determine an inoperative condition on the link when connected.
This value does not change.
The system determines the LAN response timer value.
Specify a value from 1 to 254 units. Each unit represents 0.1 second. To indicate no timer, specify 0.
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Specifies the time period used to determine an inoperative condition on the link at connection time.
This value does not change.
The system determines the LAN connection timer value.
Specify a value ranging from 1 through 254 in 0.1-second intervals for the amount of time the system waits before an inoperative condition occurs. To indicate no timer, specify 0.
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Specifies the time interval to delay sending acknowledgements for received frames.
This value does not change.
The system determines the LAN acknowledgement timer value.
Specify a value ranging from 1 to 254 units. Each unit represents 0.1 second. To indicate no timer, specify 0. If 0 is specified for the LAN acknowledgement frequency (LANACKFRQ) parameter, 0 must also be specified for this parameter. If a non-zero number is specified for the LANACKFRQ parameter, a non-zero number must also be specified for this parameter.
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Specifies the time period used to determine an inactive condition for the controller.
This value does not change.
The system determines the LAN inactivity timer value.
Specify a value ranging from 1 through 255 in 0.1-second intervals for the length of time used to determine an inactive condition for the controller. To indicate no timer, specify 0.
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Specifies the maximum number of frames received before sending an acknowledgement to the controller.
This value does not change.
The system determines the LAN acknowledgement frequency value.
Specify a value from 0 to 127 for the number of frames received. If 0 is specified for the LAN acknowledgement timer (LANACKTMR) parameter, 0 must also be specified for this parameter. If a non-zero number is specified for the LANACKTMR parameter, a non-zero number must also be specified for this parameter.
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Specifies the maximum number of frames that can be sent before an acknowledgement is received from the remote system.
This value does not change.
The system determines the LAN maximum outstanding frames value.
Specify a value ranging from 1 through 127 for the number of frames that can be sent before an acknowledgement is received.
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Specifies the priority granted to the sending system for sending frames. The larger the number, the higher the priority.
This value does not change.
The system determines the LAN access priority value.
Specify a value from 0 to 3 for the access priority for this controller on a local area network (LAN).
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Specifies whether to reduce to 1 the maximum number of frames outstanding to the remote system during network congestion. This parameter (LAN Window Step) indicates the number of frames that must be successfully received by the remote system before the number of maximum outstanding frames can be increased by 1. The increase continues this way until the maximum number of outstanding frames reaches the value specified by the LAN maximum outstanding frames (LANMAXOUT) parameter.
This value does not change.
The number of outstanding frames is not reduced during network congestion.
Specify a value from 1 to 127 for the number of frames that must be successfully received by the remote system before the maximum number of outstanding frames can be increased by 1.
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Specifies the level of the X.25 network used to access this controller. The level is specified by giving the year of the standard used by the X.25 network.
Note: Use of the lower value of the remote DTE or the network level is suggested; for example, if the remote DTE is using the CCITT standard of 1980 and the network 1984, specify 1980 for this parameter.
This value does not change.
The 1980 Standard is used.
The 1984 Standard is used.
The 1988 Standard is used.
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Specifies the X.25 network password used for password exchange with the X.24 Call Request and Incoming Call packets (Call User Data field). This parameter is not valid for permanent virtual circuit (PVC) connections.
If you want to use a connection password that consists of characters whose hexadecimal value is less than 40, you must specify the password as a hexadecimal value. When less than 8 bytes are specified, the end of the password field is padded with blanks. A password of all blank is valid. All incoming call requests must match this password to establish a connection.
To specify a hexadecimal password, the digits must be specified in multiples of two, be no more than 16 digits long, be enclosed in apostrophes, and be preceded by an X. For example, X'0102030405' is a valid hexadecimal password.
Note: This connection password is highly recommended for controllers that operate with the Enhanced Logical Link Control (ELLC) protocol LINKPCL(*ELLC) on switched virtual circuit (SVC) connections. This enhanced protocol supports reconnection of virtual circuits after network errors which disconnect the line with a clear signal; however, this reconnection is not allowed to proceed without the password validation procedure being used as a unique identifier for the controller.
Specify the connection password. The password for each controller can consist of any alphanumeric characters represented by the hexadecimal values ranging from 40 through FF.
This value does not change.
. No connection password is used.
Specify the connection password. The password for each controller can consist of any alphanumeric characters represented by the hexadecimal values ranging from 40 through FF.
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Specifies the method that is used to select lines from an X.25 switched line list.
This value does not change.
Lines are selected beginning with the first line in the switched line list.
The system determines which line in the switched line list will be selected.
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Specifies the default packet size used by the X.25 network for transmission and reception.
The possible transmission values are:
This value does not change.
The value specified in the line description is the default value.
Specify a default packet size for transmission. The valid values for the packet size are 64, 128, 256, 512, 1024, 2048, and 4096.
The possible reception values are:
This value does not change.
The value specified as the default packet size for transmission is used as the default for reception.
Specify a default packet size for reception. The valid values for the packet size are 64, 128, 256, 512, 1024, 2048, and 4096.
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Specifies the default window size for transmission and reception.
Element 1: Transmit Window Size
This value does not change.
The value specified in the line description is used as the default window size.
Specify the appropriate default window size. If you specified modulus 8, valid values range from 1 through 7. If you specified modulus 128, valid values range from 1 through 15. For switched virtual circuit (SVC) incoming calls, the system accepts the window size indicated in the Incoming Call packet facilities field.
Element 2: Receive Window Size
This value does not change.
The value specified in the line description is used as the default window size.
The value specified as the default window size for transmission is used as the default for reception.
Specify the appropriate default window size. If you specified modulus 8, valid values range from 1 through 7. If you specified modulus 128, valid values range from 1 through 15.
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Specifies the closed user-group ID for contacting this switched virtual circuit (SVC) controller on the X.25 network.
Specify the 2-digit decimal value, from 00 through 99, as provided by the network subscription. This parameter is not valid for permanent virtual circuit (PVC) connections. It is valid only for SVC circuit outgoing call operations and is ignored for SVC incoming call connections.
This value does not change.
A value is not specified for the user group identifier.
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Specifies whether reverse charges are accepted or requested when contacting this controller.
This value does not change.
No reverse charging for network tariff billing is accepted.
Charges are requested on outgoing call request packets.
Reverse charging for network tariff billing is accepted on incoming requests.
Both incoming and outgoing requests are accepted.
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Specifies the maximum number of times a frame is sent after the response timer ends when connected to this controller. The value for this parameter depends on the quality of service provided by the network and the connection to that network; that is, the frequency of lost link protocol data units.
This value does not change.
Specify a value ranging from 0 through 21 for the number of times a frame is sent.
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Specifies the maximum number of times that a logical link control (LLC) protocol data unit is sent after the connect response timer expires when connecting to this controller.
This value does not change.
Specify a value ranging from 0 through 21 for the number times a frame is sent.
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Specifies the time period allowed to return an acknowledgement when an LLC protocol data unit is sent while connected to this controller.
This value does not change.
Specify an amount of time in tenths of a second. Valid values range from 1 through 2550 in 0.1-second intervals.
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Specifies the time period allowed to return an acknowledgement when an LLC protocol data unit is sent while connecting to this controller.
This value does not change.
Specify an amount of time in tenths of a second. Valid values range from 1 through 2550 in 0.1 second intervals.
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Specifies the time interval between attempts to establish a connection to the controller.
This value does not change.
Use the values specified for the X.25 connection timer (X25CNNTMR) parameter and the X.25 connection retry (X25CNNRTY) parameter to determine how often and how many times to try establishing the connection.
Specify a value ranging from 1 to 32767 units. Each unit represents 0.1 second. Connection attempts are repeated indefinitely at this time interval.
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Specifies a string of hexadecimal characters sent to the X.25 network to request additional services. The system allows up to 218 hexadecimal characters.
This value does not change.
A value is not specified for the user facilities.
Specify a string of up to 218 hexadecimal characters.
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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.
Element 1: Maximum Recovery Limit
This value does not change.
Specify the number of second-level recovery attempts to be made. Valid values range from 0 through 99.
Element 2: Recovery 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.
More information on communication recovery is in the Communcations Management book, SC41-5406.
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Specifies the text that briefly describes the object.
This value does not change.
No text is specified.
Specify no more than 50 characters of text, enclosed in apostrophes.
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CHGCTLRTL CTLD(CTLR05) SWTLINLST(LINE02)
CNNNBR('255-3436')
This command changes the retail controller description CTLR05. The switched line list now contains only the name LINE02, and the connection number has changed to 255-3436.
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