Aha, Aha, Aha....Aha
•Correct model for reacting to ECN in a multicast packet?
•RMT Level (ECN ter)
–Single rate (PGMcc) Sender adaption - requires feedback to sender - EXACTLY as TCP - each receiver gets marks and wraps them around - will find same operating point as PGMcc with loss feedback
–Multirate (ALC) receiver adaption - each receiver chooses layers based on ECN