Measurement of Join Latency on the Mbone TITLE2
Anurag Garg, Sneha Kumar Kasera, Rohit Kumar, Don Towsley · 1999
Protocols and services using multiple multicast groups depend on multicast join/leave latencies, and join/leave processing overheads being low. Hence it is extremely important to study these latencies and processing overheads. In this document, we propose experimental approaches to measure join latencies on the IP Multicast Backbone, MBone. Using one approach, we measured join latencies at a receiver on the Mbone. We found that pruning was not taking place properly in the current MBone. We also found that existing IGMPv2 protocol fails to take into account all the interoperability scenarios with IGMPv1 protocol which might result in higher leave latencies. A solution to correct this problem is proposed which requires modifications to IGMPv2 protocol at the multicast router only.