Monitoring has become one of the key issues for the successful deployment of IP multicast in the Internet. During the last decade, several tools and systems have been developed to monitor several different characteristics of IP multicast. In this paper, we focus on one specific monitoring task: monitoring endto-end multicast service availability in the inter-domain. This task is important to maintain service robustness between sources and receivers. Without this assurance, the multicast infrastructure may become disconnected and essentially unusable. In this paper, we first study existing multicast diagnostic tools (e.g. mping and mtrace) and present their shortcomings in verifying end-to-end multicast availability. Then, we propose new multicast diagnostic utilities (mcping and mcroute) that can be used to perform various monitoring and measurement functions including verification of end-to-end service availability. We present a sample case study demonstrating the utility of these pri...
Pavan Namburi, Kamil Saraç, Kevin C. Almero