link state information

Information about the state of messaging routes (links) in an Exchange Server 2003 messaging system that is determined using the link state algorithm to quickly and frequently calculate the state of system links for up-to-date status about routes. Exchange 2003 servers use link state information to make the best routing choice at the source rather than sending a message down a path where a downstream link may be unavailable. Choosing the best route at the source eliminates message bounce and looping. [Exchange 2003]