The LANCNNTMR and LANCNNRTY parameters

Your Systems Network Architecture (SNA) controller description has two parameters: LAN connection timer (LANCNNTMR) and LAN connection retry (LANCNNRTY). They work together to define the frequency and persistence of polling the remote station to establish a connection.

LANCNNTMR specifies how long to wait before polling again. LANCNNRTY specifies how many times to poll. If the system receives no response from the remote station after polling the number of times specified in the LANCNNRTY parameter, the following occurs:

• The user is notified that contact with the station was unsuccessful.
• The system places the controller description in answer mode.
• If the remote station signals your system to try your connection inquiry again, your system attempts to establish connection again.

Performance problems:

The default values of the parameters are designed for a single LAN and might cause a connection failure when you access a remote station through a remote bridge. The bridge might slow data traffic enough that the connection timer expires before the remote station's response reaches you. If this is the case, you should increase the values of LANCNNTMR and LANCNNRTY.

To change these parameters, see Change timing parameters.