Sai V Allavarpu

US Patent:

6813770, Nov 2, 2004

Filed:

Apr 21, 2000

Appl. No.:

09/557069

Inventors:

Sai V. Allavarpu - Pleasanton CA
Rajeev Angal - San Jose CA

Assignee:

Sun Microsystems, Inc. - Santa Clara CA

International Classification:

G06F 900

US Classification:

719316, 719331

Abstract:

A system and method for managing network devices. The framework may provide a suitable system for managed object data type conversions between various data description languages, such as an interface definition language (e. g. , OMG IDL) and an abstract syntax notation (e. g. , ASN1). This conversion facility may be used in both request and event network traffic, so common libraries may be used. Two separate libraries may be used: a converter framework library and a converter implementation library. The framework library provides a collection classes that may be used by the clients of the converter libraries. Most classes in the converter framework library are handle classes (or wrappers) to the real implementation (or body) classes in the converter implementation library. Framework classes hide the details of the real implementation classes and provide a simple, consistent interface to any data type converter via IDL. The converter implementation library provides the implementation needed by the framework to function properly, and may allow various different mappings to be used easily by implementing them as plug-in modules.

US Patent:

6839748, Jan 4, 2005

Filed:

Apr 21, 2000

Appl. No.:

09/557072

Inventors:

Sai V. Allavarpu - Pleasanton CA, US
Anand J. Bhalerao - Santa Clara CA, US

Assignee:

Sun Microsystems, Inc. - Santa Clara CA

International Classification:

G06F 1516

US Classification:

709223

Abstract:

A system and method for a synchronous task scheduler. The synchronous task scheduler may be used with a CORBA Gateway between CORBA-based client manager applications and an enterprise manager. The CORBA Gateway may include components such as an Event Gateway which manages events from managed objects, and a Request Gateway which manages requests and responses of managed objects. The Event Gateway and the Request Gateway may be designed as multi-threaded systems. A thread pool may be used to increase efficiency and performance of the CORBA Gateway. To ensure ordered delivery of events or replies to the CORBA gateway clients in a multi-threaded environment using a thread pool, a synchronous task scheduler may be used. There may be a synchronous task scheduler associated with each client manager to preserve the chronology of messages sent to each. The synchronous task scheduler may maintain an internal message list, and deliver one message at a time from that internal list.

US Patent:

6915324, Jul 5, 2005

Filed:

Apr 21, 2000

Appl. No.:

09/556069

Inventors:

Sai V. Allavarpu - Pleasanton CA, US
Rajeev Angal - San Jose CA, US

Assignee:

Sun Microsystems, Inc. - Santa Clara CA

International Classification:

G06F015/16

US Classification:

709200, 709223, 709203, 719313, 717146

Abstract:

A system and method for generic and dynamic mapping of managed object metadata. The data to be mapped may include type information about an attribute, action, or notification of a managed object. The first data type is entered into the mapping system, and then a corresponding second data type is determined and returned. In this manner, data types related to the attributes, events, or other parameters of managed objects are converted between various data description languages, such as OMG IDL and ASN1. A single interface is defined to describe substantially all data types and all managed objects. Having a single object interface for all TMN managed objects saves significant resources in that there is no need to statically compile and store separate interfaces for the many objects, which may increase the scalability of a network management system dramatically.

US Patent:

6950935, Sep 27, 2005

Filed:

Apr 21, 2000

Appl. No.:

09/553967

Inventors:

Sai V. Allavarpu - Pleasanton CA, US
Anand J. Bhalerao - Santa Clara CA, US

Assignee:

Sun Microsystems, Inc. - Santa Clara CA

International Classification:

H04L009/00

US Classification:

713168, 713153, 713155, 713162, 713170, 713200, 713201, 713202

Abstract:

A system and method for authenticating users over a network. At least one pluggable authentication module (PAM) is used to authenticate users of network services. Each PAM includes a client-side authentication library and a server-side authentication library which may each be implemented in accordance with a specification expressed in an interface definition language (IDL), wherein the IDL is operable to define interfaces across a plurality of platforms and programming languages. The client-side authentication library is implemented for a particular client platform and deployed on the client computer system to provide a client-side interface to retrieve and encrypt a user profile. The server-side authentication library is implemented for a particular server platform and deployed on the server computer system to provide a server-side interface to receive the encrypted user profile from the client-side authentication library and decrypt the user profile to authenticate the user for network services. The client-side authentication library may be shared by a plurality of management applications and the server-side authentication library may be shared by a plurality of gateway components.

US Patent:

7010586, Mar 7, 2006

Filed:

Apr 21, 2000

Appl. No.:

09/552984

Inventors:

Sai V. Allavarpu - Pleasanton CA, US
Shivaram Bhat - Sunnyvale CA, US

Assignee:

Sun Microsystems, Inc. - Santa Clara CA

International Classification:

G06F 15/16

US Classification:

709223, 709224, 709228, 370254, 710 20

Abstract:

A CORBA Gateway between CORBA-based applications and an enterprise manager may be configurable to manage various networked objects, such as printers, scanners, copiers, telephone systems, cell phones, phone systems, faxes, routers, switches, etc. , which may be interconnected via networks. Various embodiments of the CORBA Gateway may include an Event Gateway which manages object events. The CORBA Event Gateway is designed to leverage existing Event Distribution Server (EDS) sinks to provide EDS filtering functionality and EDS object level access control functionality. The approach leverages existing EDS solutions by providing a common sink for all events/notifications and using a unique Event Port Registry to manage the subscriptions of various TMN clients that subscribe for such events/notifications. Generally, the approach described provides the capability to filter events according to criteria presented by client event subscriptions. In one embodiment, the events may be filtered to enforce policy-based access control on TMN events/notifications, determining which CORBA client applications have access to which events.

US Patent:

7031967, Apr 18, 2006

Filed:

Apr 8, 2002

Appl. No.:

10/118885

Inventors:

Qingwen Cheng - Fremont CA, US
Heng-Ming Hsu - Sunnyvale CA, US
Rajesh Kumar Arcot - Sunnyvale CA, US
James F. Nelson - Danville CA, US
Sai V. Allavarpu - Pleasanton CA, US

Assignee:

Sun Microsystems, Inc. - Santa Clara CA

International Classification:

G06F 17/30

US Classification:

707 10, 707 1, 707 9, 707102, 709229

Abstract:

A system for providing service attribute information including a directory server containing a hierarchical data store associating users with service attributes through data inheritance, wherein the hierarchical data store includes an organization level and a role level, and attribute templates defined with respect to services and levels, an application for generating a query to the directory server for a service attribute of a particular user of the application, wherein the directory server, in response to the query, is for using inheritance rules from the hierarchical data store to determine and report a service attribute for the particular user of the application.

US Patent:

7206843, Apr 17, 2007

Filed:

Apr 21, 2000

Appl. No.:

09/553971

Inventors:

Sai V. Allavarpu - Pleasanton CA, US
Rajeev Angal - San Jose CA, US
Anand J. Bhalerao - Santa Clara CA, US

Assignee:

Sun Microsystems, Inc. - Santa Clara CA

International Classification:

G06F 15/177
G06F 9/50
G06F 9/44
G06F 13/00

US Classification:

709226, 718104, 718102, 709223, 719313, 719316, 719314

Abstract:

A system and method for using a management interface such as Portable Management Interface (PMI) in a thread-safe and efficient manner. A secondary scheduler receives PMI management requests from multi-threaded manager applications in a thread-safe manner, such as through a lock. The secondary scheduler monitors the flow of PMI-related requests into PMI to ensure that, at any point in time, only one management request (e. g. , callback function) is running on the PMI thread. When a request in the secondary queue is ready for scheduling with the primary scheduler, the secondary scheduler then accesses the primary scheduler in a thread-safe manner, such as through a lock, to send the request to the primary scheduler. The management requests are dispatched from the primary scheduler and executed on managed objects though a Management Information Server. The performance and efficiency of the manager applications is enhanced by increasing the responsiveness of interaction between the manager applications and the schedulers.

US Patent:

7228346, Jun 5, 2007

Filed:

Apr 21, 2000

Appl. No.:

09/557068

Inventors:

Sai V. Allavarpu - Pleasanton CA, US
Linda C. Lee - Fremont CA, US

Assignee:

Sun Microsystems, Inc. - Santa Clara CA

International Classification:

G06F 15/13

US Classification:

709223, 709227, 370360

Abstract:

A CORBA Gateway between CORBA-based applications and an enterprise manager may be configurable to manage various networked objects, such as printers, scanners, copiers, telephone systems, etc. , which may be interconnected via networks. CORBA-based manager applications may communicate managed object-related messages, such as events, requests, and responses, with the managed objects through a CORBA Object Request Broker (ORB). The CORBA gateway may translate the manager requests from IDL to PMI requests. Similarly, the CORBA gateway may translate the enterprise manager PMI responses and PMI events to IDL/IIOP responses and events which may be passed on through the CORBA ORB to the manager applications in the form of IDL responses and CORBA events. In some embodiments, the client may choose the format in which to send and receive message information. To provide text based events, requests, and replies, an extension IDL interface may be used.