Method to sequence changes for ip network configuration

Details Method to sequence changes for ip network configuration Method to sequence changes for ip network configuration

H - Electricity

04

L

H04L 12/24 (2006.01) H04L 12/56 (2006.01)

Patent

CA 2305059

Updating of routers is achieved by insuring that the scheduling of router updates is such that a zone of turbulence that occurs where the updating takes place does not prevent reaching any router that may be in need of updating. For IP routers that have a task scheduling capability, this is achieved by estimating the time for communicating update information to all routers that need to be updated, adding that estimate to time of day, and transmitting the update specifications. In arrangements where routers do not have a task scheduling capability, updating is sequenced. One embodiment creates a set of traceroute trees that cover the nodes to be updated, and leaf nodes of the trees are taken up at random, placed in an ordered list and deleted from the trees. Another embodiment is more tree centric, in that once a starting node is identified (and its associated tree), all of its nodes are considered before progressing to another tree. A third embodiment takes advantage of the fact that is a node to be updated in not reachable when its updating is to be done, a second try that follows a delay is likely to succeed.

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