Changing/Showing Characteristics of a 128-Port Asynchronous Adapter

This article describes the general process of changing or showing the characteristics of a 128-port asynchronous adapter. For a detailed discussion of configuring the 128-port asynchronous adapter and RAN, refer to "Configuring a RAN with SMIT" .

Prerequisites

• A 128-port asynchronous adapter must be defined and available to the system.
• You must have root user authority.

Change or Show the Characteristics of a 128-Port Asynchronous Adapter Using SMIT

1. Use the smit ttyadapters fast path to access the 128-Port Async Adapters screen.
2. Select the appropriate adapter (cxma for Micro Channel, cxia for ISA, or cxpa for PCI) to change or see the characteristics.
3. In the displayed dialog fields, supply the values or accept the default values.
4. When you have finished, select Do.

   Note: To make the remote asynchronous nodes detectable by the adapter, you must power-cycle the nodes affected by the configuration changes and select the Configure Devices Added After IPL option from the SMIT Devices menu.

Show the Characteristics of a 128-Port Asynchronous Adapter from the Command Line

To display the characteristics of a defined and available 128-port asynchronous adapter, enter the lsattr command at the command line, specifying the -l Name and -E flags. For example, to display the characteristics of a 128-port asynchronous adapter, enter:

lsdev -Cc adapter

Find the name of the defined adapter (for example, cxma0) in the displayed output from the lsdev command, and enter:

lsattr -El cxia0

lsattr -El cxma0

lsattr -El cxpa0

See the lsattr and lsdev commands for a detailed description and optional flags.

Change the Characteristics of a 128-Port Asynchronous Adapter from the Command Line

To change the characteristics of a defined and available128-port asynchronous adapter, enter the chdev command at the command line, specifying the -l Name flag. In addition, specify (multiple instances of) the -a Attribute=Value flag to change attribute values, or specify the -f File flag to retrieve attribute values from a file, or specify a combination of both.

For example, to change a defined 128-port Micro Channel asynchronous adapter named cxma0 to use an 8-wire cable on adapter line 1, enter:

chdev -l cxma0 -a line1_cabletype=8

To change a 128-port ISA adapter named cxia1 to use an 8-wire cable on adapter line 1, enter:

chdev -l cxia1 -a line1_cabletype=8

For an 128-port PCI adapter named cxpa0 to use an 8-wire cable on adapter line 1, enter:

chdev -l cxpa0 -a line1_cabletype=8

Specify the -P flag if the configuration changes should be applied only to the database. This allows the database to be changed for a 128-port asynchronous adapter that is in use, so that changes take effect the next time the system is started.

See the chdev command for a detailed description and other optional flags.

Consult the following list to find out the Attribute name for attributes that can be changed in the -a Attribute=Value flag for the characteristic to change. For example, specify -a commode_21c2=direct to change the communication mode of node 2 for the line 2 cable to direct communication transmission. For further information, see "Configuring a RAN with SMIT" .