Managing Connections › Check for SNA Related Problems on Telnet Connections

Check for SNA Related Problems on Telnet Connections

Problems such as a lost connection or slow response times could be occurring in the SNA rather than the TCP/IP environment. To diagnose SNA problems, you can obtain SNA information about Telnet connections by using Network Control Services (NCS), a facility that provides full screen displays and navigation of the SNA network.

Note: For IBM TCP/IP stacks, you can also check all Telnet LUs by applying the CL action to an ASMON resource of Type TNSERVER (IBM Telnet server) on the IP Resource Monitor.

Check the VTAM Status of an LU

Using NCS, you can access detailed status information, configuration, and active session data.

To check the VTAM status of an LU

1. Enter D (VTAM Display) beside the appropriate connection on a Telnet connection list.

   The NCS : Resource Display appears or a basic VTAM display panel for the selected connection is presented by using an appropriate VTAM display command issued in the Command Entry facility.

Analyze SNA Sessions

The NTS : Session List panel displays a list of SNA sessions for the LU associated with the selected Telnet connection. You can view a session summary, which includes the following information:

• Activation parameters
• Virtual route status
• Trace and configuration data
• CA SOLVE:Access MAI session visibility

Because the SNA session list includes historical information, you can view session start and end times, as well as error data.

Note: If your site is not configured with CA NetMaster NM for SNA, an appropriate error message is returned when you try to use the Session List action. If your site is configured with CA NetMaster NM for SNA, ensure you have set up the Network Tracking System (NTS).

Display Session Summary

To display the session summary

1. Enter SL (Session List) beside the appropriate connection on the TCP/IP : Telnet Connection list.

   The NTS : Session List for the selected connection appears.