Matt Cutts Discusses 301 Redirect Limits
Google Webmaster Help has more than 375 videos that answers specific questions that people asked. Although these questions may apply to some of us and educational; however, most of the time it is not questions people have in mind. Now, they have decided to go back to the basics and provide an informative video on some stuff that matter.
In the video, Cutts answered his own question on “Is there a limit to how many 301 (Permanent) redirects I can do on a site? How about how many redirects I can chain together?”
So the answer to the question “Is there a limit to how many 301 (permanent) redirects on a site?” is NO! There is no limit to the number of directs used on a site. Google will not only crawl 10,000 redirects and not the rest. Google will look at as many pages as they are willing to crawl on the old site and if they see a 301 redirect, they will add it to their que and crawl the new pages. (Note: 301 redirects (Permanent Redirects) are only used when you are truly moving your site for all time and eternity as Matt Cutts says it. If it is temporary, 302 redirect is recommended.)
However, there is a small limit in 301 redirects. And that leads us to the second part of the question, “How about how many redirects I can chain together?” It is suggested to redirect visitor to another page in one “hop,” one redirect. If it happens that you are redirecting page A to page B to page C to page D to page E, it will start to get a little dangerous. The load time will be a big longer due to all the redirects which may cause bad user experience and Google Bot may be lost in following all the redirects.
Matt Cutts explains that Google is willing to follow multiple redirects on the chain; however, if there are just toooooo many redirects, like the 4th or 5th hop, Google may decide not to follow all the hops. Cutts further added the chances of Google crawling the 4th, 5th and 6th redirect is very very low. What does that mean? The new site you are redirecting to will NOT be crawled.
So in conclusion, there is no limit on redirects from one site to another site. However, there is a limit on the number of redirects chain to redirect one site to another site.