SEO foundation interlocution 301 weigh directional action

Allude in article of a lot of SEO 301 heavy directional, can you say its action?

When your site domain name happening changes or webpage address is changed (the webpage changes deposit catalog or the name of webpage file produces change) , how to ensure the site is in transfer have sex period inside the discharge that comes from search engine won’t be missing, can you update the webpage address in searching engine result at the same time? 301 heavy directional it is the good method that solves this problem, it can mix the user search engine is directional to correct webpage.

Google gives out in center of help of its website administrator proposal, 301 serious directional condition maintain at least 180 days to be beautiful. Although 301 heavy directional can pass the PR cost of old webpage to new webpage, but we suggest to be in follow-up link construction process, it is with new webpage address accurate. Meanwhile, the website administrator assistance that should inform with you exchange is linked amends a link old webpage is medium in address and newer site inside catenary setting.