Patent ID: 7496650

Claim:
An apparatus comprising one or more processing elements and memory, wherein the memory stores one or more instructions that, when executed by said one or more processing elements, performs operations comprising: maintaining one or more sets of routing information; wherein said maintaining one or more sets of routing information includes: computing an updated set of routing information based on a received network topology change indication and said one or more sets of routing information, the updated set of routing information including changes in one or more routes in said one or more sets of routing information, the network topology change indication being one of a progressive series of network changes related to a specific detected change in the network with at least one more associated network topology change indication of the progressive series of network changes expected to be received in the future; wherein the network change indication includes a value identifying that said at least one more associated network topology change indication of the progressive series of network changes is expected to be received in the future; and in response to determining that said updated routing information does not change nexthop information of said maintained one or more sets of routing information and said expectation, defined by the value, of said at least one more associated network topology change indication of the progressive series of network changes to be received in the future, determining not to update said one or more sets of routing information based on the updated set of routing information.