crawler.monitor_authentication_cookie_renewal_interval (collection.cfg setting)
This optional parameter specifies the time interval at which to renew authentication cookies in a web crawl, in seconds. For example, a value of 1800 would mean the webcrawler would renew the cookies every 30 minutes. This would normally be done by using the information in a form_interaction_file.cfg to generate the cookies.
Note:: You should only use this parameter if using pre-crawl authentication.
The default behaviour is not to renew the cookies.
If you know that your site's authentication cookies expire every 3 hours then you might specify that the crawler should renew the cookies every 2.5 hours (4500 seconds) e.g.