The Access Grid has relied on working multicast infrastructure since
its inception in 1999. This reliance on multicasting has required
considerable effort, both from network providers who need to deploy
and maintain the Access Grid and from the users who occasionally run
into difficulties.

This talk will describe how the Access Grid Toolkit plans to address
these issues by integrating technologies already developed for
application-level multicasting. The existing solutions will be
presented within the framework of the Access Grid Toolkit. This
solution is intended to provide stability to the users, while
presenting opportunities for challenging middleware research.