Methods and arrangements for dynamically modifying subsource address multicast data distribution trees
First Claim
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1. A method of repositioning at least one node in a distributed network, said method comprising the steps of:
- designating one of the nodes as a publisher node;
detecting a failed node in the network, the failed node having at least one direct child node;
retaining subscription information relating to each direct child node at each direct child node;
erasing subscription information relating to each direct child node of the failed node at any and all intermediate nodes between each direct child node of the failed node and said publisher node;
reattaching each direct child node of the failed node at another node in the network; and
reestablishing information relating to each direct child node at any and all intermediate nodes between each direct child node of the failed node and said publisher node subsequent to said step of reattaching.
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Abstract
Methods and arrangements for repositioning at least one node in a distributed network. Upon detection of a failed node in the network, subscription information relating to each direct child node of the failed node is retained at each direct child node.
16 Citations
13 Claims
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1. A method of repositioning at least one node in a distributed network, said method comprising the steps of:
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designating one of the nodes as a publisher node; detecting a failed node in the network, the failed node having at least one direct child node; retaining subscription information relating to each direct child node at each direct child node; erasing subscription information relating to each direct child node of the failed node at any and all intermediate nodes between each direct child node of the failed node and said publisher node; reattaching each direct child node of the failed node at another node in the network; and reestablishing information relating to each direct child node at any and all intermediate nodes between each direct child node of the failed node and said publisher node subsequent to said step of reattaching. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An apparatus for repositioning at least one node in a distributed network, said apparatus comprising:
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an arrangement for designating one of the nodes as a publisher node; an arrangement for detecting a failed node in the network, the failed node having at least one direct child node; an arrangement for ensuring that subscription information relating to each direct child node is retained at each direct child node; an arrangement for erasing subscription information relating to each direct child node of the failed node at any and all intermediate nodes between each direct child node of the failed node and said publisher node; an arrangement for reattaching each direct child node of the failed node at another node in the network; and an arrangement for reestablishing information relating to each direct child node at any and all intermediate nodes between each direct child node of the failed node and said publisher node subsequent to reattachment. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A program storage device readable by machine, tangibly embodying a program of instructions executable by the machine to perform method steps for repositioning at least one node in a distributed network, said method comprising the steps of:
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designating one of the nodes as a publisher node; detecting a failed node in the network, the failed node having at least one direct child node; retaining subscription information relating to each direct child node at each direct child node; erasing subscription information relating to each direct child node of the failed node at an and all intermediate nodes between each direct child node of the failed node and said publisher node; reattaching each direct child node of the failed node at another node in the network; and reestablishing information relating to each direct child node at any and all intermediate nodes between each direct child node of the failed node and said publisher node subsequent to said step of reattaching.
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Specification