What do we change in MFA 3.0 if the IP address of our Mainframe is changed?

Problem:

Our MFA access to the mainframe is by IP address.  We are going to change the IP address of the mainframe - what do we need to configure in MFA?

Resolution:

For your MFA task there will be a DD statement called XDBIN, and this will point at a parameter member.  I.e.

//XDBIN  DD DSN=MFI01.MFA30.CNTL(PARMS),DISP=SHR

This member can contain a value for BIND_NETADDR, this is where an ip address can be specified for the mainframe.    If you want MFA to listen on a specific address, then use BIND_NETADDR=n.n.n.n, where n.n.n.n is equal to the IP address of the desired network adapter.

If it is set to 0.0.0.0 it will listen on all available tcp/ip addresses on the mainframe:

BIND_NETADDR=0.0.0.0,          --- Hostname/IP address for listeners

If BIND_NETADDR is not found in the PARMS member, that means it is using the default behavior, equivalent to BIND_NETADDR=0.0.0.0.

If you have not modified this, or it is using the default, you shouldn't have to do anything except stop/start the mfa task.