which parameters should be configured in org.ops4j.pax.web.cfg or Jetty.xml?

[徐洪波]

Hi:
        I  feel confused with org.ops4j.pax.web.cfg and Jetty.xml.
        Which parameters must be configured in org.ops4j.pax.web.cfg ?
        And which parameters must be configured in Jetty.xml?
        
        For example : I have tried that  http port can be configured in 
org.ops4j.pax.web.cfg. but I still could add a connector in Jetty.xml with a 
different port assigned.
        
        Thanks for any suggestion