Method and apparatus for wire speed ip multicast forwarding
CA 2393140 C · Owner: Brown, David A. · Inventors: Brown, David A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a switch including a plurality of ports an IP Multicast packet arriving on , an ingress port a copy of the receiver packet is forwarded to each member of the IP Multicast group at wire-speed. The packet is bridged once to a given egress port and may be routed multiple times out of the egress port. If multiple subnets exist on an egress port each subnet that requires a copy of , the packet will receive the packet with its VLAN ID included in the packet. The received IP Multicast packet for an IP Multicast group is stored in memory, a pointer to the location of the packet in memory is stored for each port to which a copy of the packet is to be forwarded. An IP Multicast forwarding …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed November 30, 2000 and granted August 28, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 30, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 30, 2022.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.