Cisco Technology, Inc.

Vinay Gaonkar

Keith McCloghrie

Sanjeev Chidambar Joshi

Subrata Banerjee

Ankur Jain

Thomas James Edsall

Raja Rao Tadimeti

Madhava Rao Cheethirala

Sanjeev Joshi

Badrinarayanan Ramaswamy

Handral Krishnamurthy Vivek

Controlling access to managed objects associated with a networked device. A method comprises receiving a request from a principal for access to a managed object associated with the networked device. The managed objects are accessible based on membership in access groups that are compliant with a Simple Network Management Protocol (SNMP). A first and a second of the access groups associated with the principal are determined. Access privileges for the principal are determined, based on the first and the second access groups. Access to the managed object is granted if permitted based on the access privileges for the principal.

Controlling access to managed objects in networked devices

Disclosed are apparatus and methods for discovering topology in a storage area network having a plurality of VSANs in a network fabric is disclosed. The VSANs include a first VSAN having a plurality of network devices. The method includes the following operations: (a) defining a first one of the network devices of the first VSAN as a Topology Update (TU) Owner, wherein the other network devices of the first VSAN are not defined as TU Owners, (b) at the first network device, receiving data that indicates a topology change in the first VSAN, (c) at the first network device, generating or updating one or more TU database(s) for the plurality of VSANs of the network fabric based on the received topology change, and (d) the first network device causing the topology change to be propagated in the form of a Topology Update across the network fabric to network devices in the plurality of VSANs of such network fabric.

Dynamic inter-VSAN topology discovery

A method is disclosed for Simple Network Management Protocol (SNMP) bulk information processing. A request for a plurality of object instances stored in a storage space is received. The request specifies a condition and a maximum number of repetitions. The values of one or more object instances of the plurality of object instances are retrieved. The retrieval of object instance values is terminated when the condition is satisfied even though the maximum number of repetitions is not reached. For example, the condition may be specified by one or more pairs of Object Identifier (OID) values, wherein each pair is represented by a starting OID value and an ending OID value. In this example, the condition is satisfied when an OID value of an object instance that is retrieved is not lexicographically between the starting OID value and the ending OID value of any pair of the one or more pairs.

Method and apparatus for processing simple network management protocol (SNMP) requests for bulk information

Disclosed are apparatus and methods for facilitating communication between two devices from two different VSANs by propagating each device's presence from a first VSAN to the other device's different VSAN using a network address translation (NAT) mechanism. For instance, a first device, such as a host H, from VSAN_A is allowed to access data from a second device, such as disk D, of VSAN_B by propagating Ds presence into VSAN_A and Hs presence into VSAN_B. This awareness is accomplished by propagating an identifier for each device into the edge VSAN of the other device, as well as into any transit VSAN. So as to not duplicate identifiers in any one of the VSANs, a device's presence is propagated into a particular VSAN by assigning an unused domain for use by such device in the particular VSAN.

Inter-VSAN routing with NAT

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Milpitas, CA, United States of America

Vinay Gaonkar