The vrport vradmind command enables you to display or change the port numbers depending on whether you use it with the port parameter. For vradmind this command sets only the TCP port, as the vradmind uses the TCP port for replicating between the Primary and Secondary.
To display the current TCP port number that vradmind uses, use the command
vrport vradmind
To change the port number that vradmind uses for communication between the Primary and Secondary, use the command
vrport vradmind port
To change the current TCP port number used by vradmind from the default value 4545 to 4646:
vrport vradmind 4646
net stop vxsvc fnet start vxsvc
Make sure that you perform these steps on the corresponding Secondary host to ensure that both hosts use the same port.