Lo cal Error Recovery in SRM
Comparison of Two Approaches
Ching Gung Liu Deb orah Estrin Scott Shenker and Lixia Zhang
Memb ers use propagation delays to schedule their request Abstr act SRM is a framework for reliable multicast de
livery In order to maximize the collab oration among the
and reply timers each memb er detecting a loss waits for a
group memb ers in error recovery b oth retransmission re
random time p erio d b efore sending the retransmission re
quests and replies are multicast to the entire group While
quest and similarly each memb er receiving a retransmis SRM e ectively uses random timers to suppress duplicate
requests and replies the global nature of the request and
sion request waits for a random time p erio d b efore sending
replies means that every packet loss results in at least one