Patent ID: 7991865
Filing Date: 2011-08-02
Classification: H04L

Abstract:
1. A method comprising: accessing management information base (MIB) object instance update frequency information reflecting frequency of updates to values maintained for MIB object instances during operation of a network device; selecting, based on at least the accessed MIB object instance update frequency information, a subset of less than all MIB object instances that are updated within the MIB during operation of the network device; populating, at the network device, an MIB sub-group with identifiers corresponding to MIB object instances within the selected subset of less than all MIB object instances that are updated within the MIB during operation of the network device; determining whether changes are made to the MIB object instances for which corresponding identifiers are populated to the MIB sub-group; computing, for the MIB sub-group, an aggregate change identifier (ACI) that is related to a state of object instances corresponding to identifiers within the MIB sub-group, comparing the computed ACI against an ACI previously computed for the MIB sub-group; determining whether change has occurred in the ACIs computed for the MIB sub-group; and evaluating information within the MIB object instances corresponding to identifiers within the MIB sub-group based on whether a change has been determined to exist in the ACIs computed for the MIB sub-group, wherein the change in the ACI indicates a change in at least one MIB object instance in the MIB sub-group.