Typically the creation of a DB2 ODBC connection is out of scope for support and TDM, but we've been able to create an ODBC configuration on a local machine to work with a remote DB2 database. In this case, here are the steps we used to establish the local alias. For further details on the commands below, please refer to IBM's website.
Before performing the steps, make sure you have your IBM DB2 client is installed on your workstation, since it will be the IBM DB2 Client that will create the local alias and ODBC connection.
Once you have the client installed, here are the commands we used to build the ODBC connection:
>catalog tcpip node <YourNodeName> remote <yourhost> server <port number>
>catalog db <your db> as <YOURALIAS> at node <YourNodeName> authentication dcs
>connect to <YOURALIAS> user <yourid> (you will then be prompted to supply your database password)
>bind 'C:\Program Files (x86)\IBM\SQLLIB\bnd\@ddcsmvs.lst' blocking all sqlerror continue grant public action add catalog system odbc data source <YOURALIAS>
The bind step may fail that the bind already exists, which you can safely ignore.
If you are able to verify your alias, you will now be able to create your ODBC 32-bit sources.