How to auto redirect link with node/id to /name?
You are probably looking for Global Redirect. That module does what you want it to do, it checks to see if there is a path alias for things like node/1 and if there is it will redirect to that URL.

GlobalRedirect is a simple module which…

Checks the current URL for an alias and does a 301 redirect to it if it is not being used.
Checks the current URL for a trailing slash, removes it if present and repeats check 1 with the new request.
Checks if the current URL is the same as the site_frontpage and redirects to the frontpage if there is a match.
Checks if the Clean URLs feature is enabled and then checks the current URL is being accessed using the clean method rather than the 'unclean' method.
Checks access to the URL. If the user does not have access to the path, then no redirects are done. This helps avoid exposing private aliased node's.
Make sure the case of the URL being accessed is the same as the one set by the author/administrator. For example, if you set the alias &quot;articles/cake-making&quot; to node/123, then the user can access the alias with any combination of case.

Most of the above options are configurable in the settings page. In Drupal 5 you can access this after enabling the globalredirect_admin module. In Drupal 6, the settings page is bundled into the module.

Note: That is straight from the module page, they haven't updated that Drupal 5-6 statement to include D7 I don't guess but I use this module in D7 and it works also.