Abstract
There has been active research on quality of service (QoS) multicasting. Very few, however, addresses QoS inter-domain multicasting. We present a QoS extension to BGMP (border gateway multicast protocol) which, proposed by Kumar, et al., is currently one of the most promising inter-domain multicasting proposals. With limited modification to the current BGMP, we extend it to support the so called two-bit differentiated service (including the classes of premium, assured, and best-effort services) proposed by Nichols, Jacobson, and Zhang. Detailed mechanisms of the QoS extension are described. Performance is evaluated through extensive simulation of real-network scenarios, supporting CBR, VBR, and best-effort traffic flows with the three classes of services. We believe that the work presented here is significant to the advancement of the next-generation Internet supporting QoS communications.
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