Creating or Modifying a Communications Path Definition
The communications path defines the physical communications path between the local Connect:Direct® node and one or more remote Connect:Direct nodes.
If you install SNA software and select APPC support during installation, two communications path objects are created in the Microsoft Windows Registry: one for TCP/IP and one for APPC. If you do not have APPC support, only a TCP/IP default communications path object is created.
- Do one of the following:
- To modify a communications path definition, double-click the definition in the CommPath window.
- To add a new communications path, right-click the CommPath box and click Insert.
- To define a communications path, type the name of the communications path in the Name field, and select the protocol to associate with it: TCP/IP, APPC, or UDT.
- Define a new mode or assign an existing mode to the communications path.
- To associate an existing mode with the communications path, select the mode from the Selected Mode drop-down list.
- To define a new mode to associate with the communications
path:
- Click New.
- Type the name of the new mode in the Name field.
- Select the protocol to associate with the mode: TCP/IP, APPC, or UDT, and click OK.
- To add or update TCP/IP settings, click the TCP/IP tab.
Refer to the following table for the name, definition, and valid values
for each field.
Field Name Description Valid Values Buffersize
The buffer size for transmitting data to and from the remote Connect:Direct node. This value overrides the value in the initialization parameters file.
A numeric value from 256–65536.
The default is 65535.
Pacing Send Count
The number of send operations to perform before automatically waiting for a pacing response from the remote Connect:Direct node. A value of 0 indicates that there is no pacing. This value overrides the value in the initialization parameters file.
A numeric value from 0–63.
The default is 0.
Pacing Send Delay
The amount of time Connect:Direct waits before sending each outbound data buffer to the remote node. This can prevent flooding the network. A value of 0 indicates that Connect:Direct sends each data buffer as soon as possible. This value overrides the value in the initialization parameters file.
An integer from 0–86400.
The default is 0.
CRC
Specifies whether CRC checking is turned on.
The default value for the local node is OFF. The default value for the remote node is blank.
The remote node defaults to blank to simplify the use of the crc.override parameter. When crc.override is enabled in the initialization parameter, only the nodes that require a different configuration need to be changed.
OFF | ON | blank
- To add or update APPC settings, click the APPC tab. The
following table shows the name, definition, and valid values for each
field on the APPC tab.
Field Name Description Valid Values Adapter Number
Indicates whether the token ring adapter number to be used for this connection is Primary or Alternate.
Primary | Alternate
Adapter Address
The token ring address of the remote node. This address consists of hexadecimal digits. Enter all zeroes if the local node is the same as the remote node.
Valid remote node token ring address
Local SNA Network
The SNA network name of the local Connect:Direct node. This name must match the name of the SNA network in which the local Connect:Direct node resides.
Valid SNA network name
LU Name
The name of a Local APPC LU configured within Microsoft SNA Server. This parameter is required.
Valid LU alias name
- To add or update UDT settings, click the UDT tab. The
following table shows the name, definition, and valid values for each
field on the UDT tab.
Field Name Description Valid Values Buffersize
The buffer size for transmitting data to and from the remote Connect:Direct node. This value overrides the value in the initialization parameters file.
A numeric value in the range 256-65536.
UDT33 CRC
Specifies whether CRC checking is turned on.
The default value for the local node is OFF. The default value for the remote node is blank.
The remote node defaults to blank to simplify the use of the crc.override parameter. When crc.override is enabled in the initialization parameter, only the nodes that require a different configuration need to be changed.
OFF | ON | blank
- Click OK.