Redirect non www. domain to WWW. domain for established website?

[BruLee]

Hey guys,

The website in question has been online for more than 5 years but there are still 2 versions of the website.

Both versions are indexed by Google and of course, this will result in duplicate content.

Is it necessary to redirect the non-www domain to the www. domain. What are the cons and advantages?

Will the www. links replace the non-www links when it comes to keyword rankings?

Thanks.

[malecce]

Hi

You have two ways

If use Apache you can do with .htaccess

If you use Windows you can do with IIS

The advantage of this action is that you take domain authority of the first site( for example without www) for the benefit of the other domain( for example with www)

Can you comunicate to  google with webmaster tools, also

after:

"Will the www. links replace the non-www links when it comes to keyword rankings?"

I think that you don't lose the ranking positions

Ciao

Maurizio