Purpose of having multi listener ?

[Himaja]

hi

while setting multi listener, i changed only the host.
i dint change the port.

(ADDRESS = (PROTOCOL = TCP)(HOST = 192.9.100.1)(PORT = 1521))
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.9.100.2)(PORT = 1521))


is it the right way of setting multi listener ??


thanks in advance
himaja