Proximity-based redirection system for robust and scalable service-node location in an internetwork
First Claim
1. A packet-switched network including addressable routers for routing packet traffic, wherein a packet of data is routed from a source node to a destination node based on address fields of the packet, the packet-switched network comprising:
- at least one service node coupled to at least first one of the addressable routers and having logic to propagate data packets between a client and a plurality of nodes in an anycast group; and
at least one redirector coupled to at least a second one of the addressable routers, the at least one redirector comprising;
A) logic for advertising reachability to an anycast destination address associated with the plurality of nodes in the anycast group;
B) logic for accepting a service request from the client, wherein the service request is an anycast message to the anycast destination address; and
C) logic for generating a redirection message directed to the client for redirecting the service request to the at least one service node.
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Accused Products
Abstract
A proximity-oriented redirection system for service-to-client attachment in a virtual overlay distribution network. The virtual overlay distribution network includes addressable routers for routing packet traffic, wherein a packet of data is routed from a source node to a destination node based on address fields of the packet. The invention includes a redirector coupled to at least one of the addressable routers and includes: logic for accepting a service request from a client; logic for determining a selected server for handling the service request, the selected server being one of a plurality of servers that can handle the service request; and logic for generating a redirection message directed to the client for redirecting the service request to the selected server.
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Citations
22 Claims
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1. A packet-switched network including addressable routers for routing packet traffic, wherein a packet of data is routed from a source node to a destination node based on address fields of the packet, the packet-switched network comprising:
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at least one service node coupled to at least first one of the addressable routers and having logic to propagate data packets between a client and a plurality of nodes in an anycast group; and
at least one redirector coupled to at least a second one of the addressable routers, the at least one redirector comprising;
A) logic for advertising reachability to an anycast destination address associated with the plurality of nodes in the anycast group;
B) logic for accepting a service request from the client, wherein the service request is an anycast message to the anycast destination address; and
C) logic for generating a redirection message directed to the client for redirecting the service request to the at least one service node. - View Dependent Claims (2, 3, 4, 5)
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6. A method of operating a redirector in a packet-switched network including addressable routers for routing packet traffic, wherein a packet of data is routed from a source node to a destination node based on address fields of the packet, the method comprising:
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advertising reachability to an anycast destination address from the redirector;
accepting a service request from a client, wherein the service request is an anycast message to the anycast destination address;
determining a selected server for handling the service request, the selected server being one of a plurality of servers that can handle the service request; and
generating a redirection message directed to the client for redirecting the service request to the selected server. - View Dependent Claims (7, 8, 9, 10, 11, 12)
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13. A method of operating a packet-switched network including addressable routers for routing packet traffic, wherein a packet of data is routed from a source node to a destination node based on address fields of the packet, and wherein the packet-switched network includes a redirector coupled to at least one of the addressable routers and at least one service node, the method comprising:
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advertising reachability to an anycast destination address from the redirector;
accepting a service request from a client at the redirector, wherein the service request is an anycast message to the anycast destination address; and
generating a redirection message directed to the client for redirecting the service request to the at least one service node. - View Dependent Claims (14, 15, 16, 17)
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18. In a packet-switched network including addressable routers for routing packet traffic, wherein a packet of data is routed from a source node to a destination node based on address fields of the packet, an improvement comprising:
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a redirector coupled to at least one of the addressable routers, the redirector including;
logic for advertising reachability to the anycast destination address;
logic for accepting a service request from a client, wherein the service request is an anycast message to an anycast destination address;
logic for determining a selected server for handling the service request, the selected server being one of a plurality of servers that can handle the service request; and
logic for generating a redirection message directed to the client for redirecting the service request to the selected server. - View Dependent Claims (19, 20, 21, 22)
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Specification