Method for providing scalable multicast service in a virtual...

Details Method for providing scalable multicast service in a virtual... Method for providing scalable multicast service in a virtual...

2010-02-19

2011-11-01

Lin, Wen-Tai (Department: 2454)

Electrical computers and digital processing systems: multicomput

Computer-to-computer data routing

C709S236000, C709S246000

Reexamination Certificate

active

08051201

ABSTRACT:
Multicast capability in a virtual private LAN service (VPLS) is provided in a provider IP/MPLS infrastructure without headend replications by encapsulating a customer data packet to use an established multicast protocol, such as IP multicast. In one example, the customer data packet is encapsulated by an IP header having an IP multicast group address and an Ethernet header. In one implementation, a DNS type mechanism is provided to distribute the IP multicast addresses for VPLS use. Such IP multicast group address can be set aside from an administratively scoped address range. An efficient IP routing algorithm running on the provider's network provides an efficient distribution tree for routing IP-encapsulated customer packet for the VPLS.

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