Backup route is the same as the primary route
Updated: February 1, 2011
Applies To: Forefront Threat Management Gateway (TMG)
When the backup route upstream proxy server is the same as the primary route, there is no alternative route for processing requests if the primary route does not respond.
For high availability, either specify an alternative upstream server as the backup route, or specify that if the primary route is unavailable, requests should be redirected directly to the Internet.