Basic HTML version of Foils prepared 15 April 98

Foil 21 RSVP's Host Model

From Part II of RSVP Reservation Protocol CPS640 Internet and Multimedia Technologies -- Spring 98. by Marek Podgorny,Nancy McCracken
1 1. and 2. may happen in either order.
2 Suppose that a new sender starts sending data (6) but there are no multicast routes because no receivers have joined the group (1).
  • The data will be dropped at some router node until receivers(s) appear.
3 Suppose that a new sender starts sending Path messages (2) and data (6) simultaneously, and there are receivers but no Resv messages have reached the sender yet.
  • The initial data may arrive at receivers without the desired QoS. The sender could mitigate this problem by awaiting arrival of the first Resv message (5); however, receivers that are farther away may not have reservations in place yet.
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