科研成果详情

Anycast members are almost servers supplying a same or similar service, specially, for multimedia servers. The special feature makes the QoS on the service data direction more important than that on the request data direction. For this feature and the semantic of anycast, we propose a QoS routing protocol, called Reverse Anycast QoS routing protocol, RAQ. RAQ uses reverse dynamic distance from the destinations to the source of the anycast datagram (from the anycast members to the client) as one of metrics. It is different from other routing protocols which use the dynamic distance of normal direction from the source to the destination of the datagram. The server load of anycast members is also taken into account by RAQ. These two special metrics increase the reservation request acceptance ratio on the service data direction and balance the server load to some extent. The message overhead of resource …