Assigning a TCPIP port for clustered instance(IPALL option) in dynamic tcp port

What happens when I specify a TCPIP port for clustered instance(IPALL option) in dynamic tcp port instead of static tcp port with a port number other than 0

http://support.microsoft.com/kb/823938

Hey Manikandan,          I have already gone through the article but it only deals with the static  and dynamic port  allocation. dynamic  with default 0. But it doesn’t discuss about assigning  any other port for dynamic port except

Only named instances of SQL Server can use the dynamic port  allocation. Is yours named one?Default instance will always use a static  port.