10.2.5 LANSA Communications Routing Records(COMMS_ROUTING_RECS)
The routing information you enter on this screen is used to set up the link between the client and the server. It is stored in the communications routing table /<LANSA_adminlib>/connect/lroute.dat where <LANSA_adminlib> is your LANSA administration library.
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Enter the following information:
Partner LU name (Host)
This is the name for the Data/Application Server. (For example, the name might appear as S102ABCD.) This name is simply used to represent the fully qualified name.
Fully qualified name
For an IP connection, the fully qualified host name can be the IP address (for example 123.123.123.123) or it can be the assigned TCP Host Name (for example S102ABCD.APPN.SNA.IBM.COM) for the Application/Data Server.
Communications method
Always SOCKET.
Communications Module
Leave blank.
Connection Identifier
For SOCKET (TCP/IP), this is the port number at which the listener job will listen for connection requests. The workstations must be configured to connect to the port number nominated here. The default is 4545.
Packet size
Leave as default. The size is determined internally from the size of the send buffer. The default is 1024 plus the size of a header. This parameter should not be changed, unless the change is made by a networking specialist configuring for special circumstances.
TCP_NODELAY TCP/IP Socket Option
Indicates whether the TCP_NODELAY TCP/IP socket option should be enabled or not. This option is displayed only if the communications method is SOCKET (TCP/IP). Valid values are:
- YES - Disable the Nagle algorithm to allow small data packets to be delivered to the remote system without delay. This is the default value.
- NO - Don't disable the Nagle algorithm.
- The Nagle algorithm coalesces a small data buffer from multiple send calls and delays sending it until an acknowledgement for the previous data packet sent is received from the remote system. It is enabled by default in TCP/IP sockets.
- As the LANSA Communications Extensions implements its own data buffering, the Nagle algorithm is not needed.
Enable IPv6
Whether to enable support for Internet Protocol version 6.
- YES – The host accepts client connections using IPv6 in addition to IPv4.
- NO - The host only accepts client connections using IPv4. This is the default value.
Tracing Options
Select (enter any non-blank character) for each option to indicate the events or actions which require tracing or Press the relevant function key to either options, options or options:
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Errors |
Traces error information. This consists of errors which may be considered "normal" during communications as well as any "fatal" errors encountered. "Fatal" error messages are also written to the IBM i job log. |
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System Info |
Traces basic information at the system software level such as version negotiation. |
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Debug Listener |
Traces the events in the listener job. |
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IPC Data |
Trace data sent and received at the point where the Inter Process Communications (IPC) interface (for example, TCP/IP sockets) is called. |
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CPIC Data |
Trace data sent and received at the point where LANSA Communications Extensions APIs are called. |
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Internal IPC Calls |
Trace calls made to the Inter Process Communications (IPC) interface (for example, the Sockets IPC Module). |
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External IPC Calls |
Trace calls to the IBM i communications interface (for example, TCP/IP sockets APIs). |
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Cryptographic Info |
Trace cryptographic information |
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Calls to CPIC |
Trace API (CPIC) calls to the LANSA Communications Extensions CPIC Manager. |
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Trace Host |
Trace flags will be sent to the host during the connection of this route record. The host will use the trace flag for this communication session. |
Logging Options
Enables the recording of normal events which need tracking when the listener job is running. On the IBM i messages are sent to the job's external message queue and will be listed in the job log.
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Connect In |
Record details of incoming connection requests. |
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Connect Out |
Reserved for future use. |
Press when you have completed these entries.