Method and apparatus for controlled access of requests from virtual private network devices to managed information objects using simple network management protocol and multi-topology routing
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United States of America Patent
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Apr 28, 2009
Grant Date -
Jul 28, 2005
app pub date -
Mar 22, 2005
filing date -
Jun 8, 2001
priority date (Note) -
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Abstract
Access control approaches are disclosed wherein managed object in Simple Network Management Protocol (SNMP) Management Information Bases (MIBs) are accessed on a per-Virtual Private Network (VPN)-basis, taking into account multiple topologies that may exist under multi-topology routing (MTR) deployments, with no modifications to existing MIBs. One approach involves determining an identifier of a virtual private network in the request and a context name; determining, based on the context name, one or more sub-contexts that are either explicitly or implicitly specified in the context name; identifying, among a plurality of instances of managed objects that are associated with one or more routing topologies of a multi-topology routing system, a subset of object instances that requests associated with the virtual private network are permitted to access; and providing the request with access to only the subset of object instances.
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