How to set server ip address?

[lacivert]

Informix jdbc url is like this;

jdbc:informix-sqli://hostname:portnum/database_name:INFORMIXSERVER=servername

Let's say; IP address (hostname) of the informix server is 172.10.20.30
database_name is myDb and informix servername is part_1;

jdbc url looks like this:

jdbc:informix-sqli://172.10.20.30:1504/myDb:INFORMIXSERVER=part_1

How to put these three params into the options?