Guys, my sitemap have 36000 pages. but only 566 pages are indexed by google. How can I index all my pages fast? Should I create sitemap_index for this site?
Google won't automatically index every page it finds. It will only do a certain amount depending on the trust of your site. If you want more pages to get index build more links the best kind being deep links to internal pages.
You need to ensure all these pages are properly linked to by other authoratative pages. Check it through yahoo also.