Backup Servers

Backup servers are optional. You do not have to specify a backup server.

Host On-Demand uses backup servers in the event of a failure to connect with the main server either:

When you first open the session; or
During an active session after a connection failure, if you have Auto-Reconnect selected on the Advanced panel.

In either of these situations, Host On-Demand will always try connecting with servers in the following order:

The main server (the server specified in the Destination Address field of the Connection panel).
Backup 1, if the attempt to connect with the main server fails and Backup 1 is specified.
Backup 2, if the attempt to connect with Backup 1 fails and Backup 2 is specified.

Failure to connect with a particular server may occur because the server does not exist, because the server is unreachable, or because the server is not answering.

Busy or in use conditions. If Host On-Demand reaches a host which is busy or which responds that the specified LU Name (3270) or Workstation ID (5250) is in use, then Host On-Demand will disconnect the session and not try to connect with the next backup server.

Fields disabled. When Enable SLP is Yes all the fields on this panel are disabled.

Backup servers are available with the following session types: 3270 Display, 3270 Printer, 5250 Display, 5250 Printer, CICS Gateway, and VT Display.

Backup 1

Destination Address

The server name (such as myserver.xxx.xxx.com) or IP address (such as 9.x.x.x).

Destination Port

Enter the port on the server to which you wish to connect (such as 23).

LU Pool Name

Enter the LU or pool name (used only for 3270 Display sessions and 3270 Printer sessions).

Backup 2

Destination Address

The server name (such as myserver.xxx.xxx.com) or IP address (such as 9.x.x.x).

Destination Port

Enter the port on the server to which you wish to connect (such as 23).

LU Pool Name

Enter the LU or pool name (used only for 3270 Display sessions and 3270 Printer sessions).