Use sparse mode if the devices that are being multicasted are distributed sparsely. Use dense mode otherwise. Sparse mode have more overhead than dense mode. it is designed for sparsely distributed multicasted device ___________________________________ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]