Multicast
Ladislav Lhotka <Lhotka@cesnet.cz>
Project homepage: http://www.cesnet.cz/tf-ngn/multicast
Support pages
- Outline
- Contributors needed (MS Windows, BSD, ...)
Bulk data transfers via reliable multicast
- redundant coding approach, no feedback from listeners
- software distribution, GRID
- software prototype
Multicast beacon tests
Nice features
- New beacons may be added at any time
- HTTP interface
Problems
- Java: Java RTE required; the server doesn't work under JavaVM 1.3.0
- missing features (graphs for delay and jitter in the viewer)
- no history available
- no authentication
Further work
- Resolve the Java problems with the server
- Set up an "official" beacon infrastructure
- Representative set of beacons - one in each Géant PoP?
- Advertise the service
- Try to address the deficiencies
Multicast & MPLS
- Multicast not supported natively
- Multicast packets come unlabelled to the P routers
- RPF check fails
- Cisco GSR doesn't support GRE tunnels
- Solutions (ugly): MBGP on the P routers, using only shared tree, ???
Ladislav Lhotka <lhotka@cesnet.cz>
Last modified: Tue Apr 3 10:06:39 CEST 2001