Routing table 2. Good for some state. State Aggregation Different forwarding granularities. Both networks have provided partial and somewhat different answers to half of the problem. This leads to much confusion, made worse by using a differing set of capabilities in each network.
Final answers are unlikely to be around the corner.
This is a chicken and egg problem. Multicast servers scale better and also allow RSVP processing - need to be careful of centralized bottlenecks, though. The question remains if we can provide guarantees to some flows and stil build a scalable network. However, it is an extremely important observation that contention for a VC is statistically infrequent. In terms of traffic management, there is scepticism that either IP or ATM has the traffic classes right.