SAM RG (Scalable Adapative Multicast) IETF-77 Chairs: John Buford and Thomas Schmidt Application Layer Multicast Extensions to RELOAD. Thomas: Are there any security concerns regarding AMT gateway and the overlay traffic. Mario: At the moment, this is not considered. A Common API for Transparent Hybrid Multicast. Zhihui Lv: Can a P2P distribution scheme incorporated with the API. Matthias: Yes. The API provides an abstract interface towards applications, which is technology agnostic. Below the API several distribution technologies can be included. The mapping between the Group Name and the Group Addresses may be handled by a middleware layer. Thomas Morin: Very interesting work, but it is a bit hard to understand the abstract concepts. Maybe it would be helpful to give a more concrete, illustrative example. Matthias: OK. WeeSan Lee: It is a bit unclear why you explicitly consider the namespace in the Group Name, and why this does not conflict with technology independent data distribution. Matthias: Encoding the namespace may help to map the Group Name to the Group Address in a more convenient way. However, this does not conflict with the abstraction concept. The namespace used by the Group Name does not predefine the technology used for multicast data distribution. Multiparty Transport Overlay Control Protocol (MTOCP) - no discussion SAM Testbed Status - a couple of questions, taken offline G-Lab: Overview of Testbed and Selected Projects - a couple of questions on Experimental Site Structure