how to redirect url in liferay

Hi,

I have a liferay 5.2.3 (http://localhost:8080/web/) instance with 80 portlets in it. In which the more requests are only for one particular portlet (portletA). So it is slowing down the other portlets requests processing. So I just created another liferay 5.2.3(http://localhost:8181/web/portletA) instance and deployed that portlet.

Now when I login through http://localhost:8080/web/ and type http://localhost:8080/web/portletA, that should redirect to http://localhost:8181/web/portletA.

I have tried the URL redirecting and the rule is ,

<rule>
        <from>http://localhost:8080/web/portletA</from>
       <to type="redirect">http://localhost:8181/web/portletA</to>
 </rule>

But still it is not redirecting. Instead it is on http://localhost:8080/web/portletA and says the portlet is not deployed.

Any help is appreciated.