Summary: Design and Evaluation of Router­Supported and
End­to­End Multicast Receiver­Based Scoping
Protocols \Lambda
Lenitra M. Clay
Mostafa H. Ammar
Networking and Telecommunications Group
College of Computing
Georgia Institute of Technology
Atlanta, GA 30332
flenitra,ammarg@cc.gatech.edu
(404)894­3292, Fax: (404)894­0272
Abstract
IP multicasting allows a source to define a multicast group address and receivers can dynamically
join and leave this group. Currently the propagation of multicast packets is controlled by two scoping
methods: TTL scoping and administrative scoping. Both of these approaches require the source to
control the scope of the multicast. In this paper we explore two receiver­based scoping protocols.
Receiver­based scoping allows a receiver to place conditions on its multicast join that must be met in
order to join successfully and remain a member of the multicast group. Such a scoping mechanism
would be useful in environments where the receiver incurs a cost for its membership of the multicast
group. In this paper we discuss receiver­based scoping and its design goals. In order to perform

Source: Ammar, Mostafa - College of Computing, Georgia Institute of Technology

Collections: Computer Technologies and Information Sciences