Have you tried creating a sitemap and submitting it to Google via to the WebMaster's tools? If so then go into the webmaster tools and then set the index frequency all the way up to high. This will allow Google's spiders to index your website without and boundaries, in other words using as much bandwidth to index as many pages as they decide to index. I've done this with my huge websites and it works well. Also make sure the priority in your sitemaps are set to 1.0 or 0.5. Hope this helps. BTW, what type of website is this?