Colloquium Details
Multicast Monitoring: Supporting a Robust Multicast Service in the Network
| Author: | Kamil Sarac University of California, Santa Barbara |
|---|---|
| Date: | February 05, 2002 |
| Time: | 15:30 |
| Location: | 220 Deschutes |
Note: Special Day
Abstract
Multicast (one-to-many data transfer operation) provides efficient means for delivering bandwidth-intensive data to large and geographically dispersed groups of receivers. Within the last decade there has been a significant amount of work in developing necessary protocols for multicast and deploying them in the network. During this time, it has been well recognized that the success of multicast deployment highly depends on the availability of good monitoring and management systems. Our work is concerned with supporting multicast deployment efforts by providing necessary mechanisms to monitor and verify robust functioning of the service in the network.
In this talk, I will first focus on reachability monitoring (i.e. monitoring successful multicast data transmission among multicast-enabled domains) and present a monitoring system called sdr-monitor. Sdr-monitor uses application layer information to monitor multicast reachability from the end points of the network. It is the first system capable of presenting the global multicast reachability characteristics in near real-time. Next, I will present a generic architecture for multicast monitoring systems. This architecture aims to provide guidelines for multicast monitoring-system designers and developers. We used this architecture to evaluate and extend an already existing protocol, Multicast Reachability Monitor (MRM) protocol. Finally, I will describe an efficient and scalable mechanism, called tracetree, for discovering multicast tree topologies in the network. Tracetree uses the forwarding state information in the routers and does not require knowing the network topology and/or session receiver identities. It can be used to discover the actual, logical and domain-level representations of multicast tree topologies.
Biography
Kamil Sarac is a Ph.D. candidate in the Department of Computer Science at the University of California Santa Barbara. He received his M.S. in Computer Science from UC Santa Barbara and his B.E. from Middle East Technical University, Turkey. His main research interests are computer networks, IP multicast, protocol architectures, network monitoring and management.