Patents by Inventor H. Michael Zadikian
H. Michael Zadikian has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9030962Abstract: A method and apparatus for centralized control of a network is described. The network includes a number of nodes. The method includes creating a database and storing the database on a master node of the network. The database contains topology information regarding a topology of the network. Each of the nodes is coupled to at least one other of the nodes, with the master node being one of the nodes.Type: GrantFiled: November 30, 2011Date of Patent: May 12, 2015Assignee: Cisco Technology, Inc.Inventors: Ali N. Saleh, H. Michael Zadikian, Zareh Baghdasarian, Vahid Parsi
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Patent number: 8762568Abstract: A method and system is provided to reduce the time to restore links in a communication system. The method and system employ a preplanned backbone zone to eliminate downtime searches for alternate paths. Efficient use of restoration techniques assures that inter-zone routes are properly allocated. Alternate paths are chosen by calculating shortest paths from a root node to a target node. The shortest paths are placed in a table for lookup whenever a communication failure occurs. Considerations as to cost and length are taken into account in determining the alternative routes.Type: GrantFiled: July 6, 2001Date of Patent: June 24, 2014Assignee: Cisco Technology, Inc.Inventors: H. Michael Zadikian, Zareh Baghdasarian, Ali N. Saleh, Vahid Parsi
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Patent number: 8537836Abstract: A method for restoring a virtual path, provisioned between a source and a target node, in a mesh zoned optical network is described. The method, in one embodiment, broadcasts or floods restore path requests in the network to expedite the identification of an alternate route and minimize the service disruption for failed virtual path. The flooding of requests is controlled to ensure efficient performance of the network yet guaranteeing minimum restoration time to allow critical telecommunication related traffic to flow through the network with virtually no interruption. The constant update of nodal topology by each node allows a fast identification of alternate physical path for failed virtual path.Type: GrantFiled: October 31, 2007Date of Patent: September 17, 2013Assignee: Cisco Technology, Inc.Inventors: Ali N. Saleh, H. Michael Zadikian, Zareh Baghdasarian, Vahid Parsi
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Publication number: 20120076492Abstract: A method and apparatus for centralized control of a network is described. The network includes a number of nodes. The method includes creating a database and storing the database on a master node of the network. The database contains topology information regarding a topology of the network. Each of the nodes is coupled to at least one other of the nodes, with the master node being one of the nodes.Type: ApplicationFiled: November 30, 2011Publication date: March 29, 2012Inventors: Ali N. Saleh, H. Michael Zadikian, Zareh Baghdasarian, Vahid Parsi
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Patent number: 8081582Abstract: A method and apparatus for centralized control of a network is described. The network includes a number of nodes. The method includes creating a database and storing the database on a master node of the network. The database contains topology information regarding a topology of the network. Each of the nodes is coupled to at least one other of the nodes, with the master node being one of the nodes.Type: GrantFiled: April 30, 2010Date of Patent: December 20, 2011Assignee: Cisco Technology, Inc.Inventors: Ali N. Saleh, H. Michael Zadikian, Zareh Baghdasarian, Vahid Parsi
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Patent number: 8064481Abstract: A method for restoring a virtual path, provisioned between a source and a target node, in a mesh zoned optical network is described. The method, in one embodiment, broadcasts or floods restore path requests in the network to expedite the identification of an alternate route and minimize the service disruption for failed virtual path. The flooding of requests is controlled to ensure efficient performance of the network yet guaranteeing minimum restoration time to allow critical telecommunication related traffic to flow through the network with virtually no interruption. The constant update of nodal topology by each node allows a fast identification of alternate physical path for failed virtual path.Type: GrantFiled: June 2, 2008Date of Patent: November 22, 2011Assignee: Cisco Technology, Inc.Inventors: Ali N. Saleh, H. Michael Zadikian, Zareh Baghdasarian, Vahid Parsi
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Publication number: 20100208622Abstract: A method and apparatus for centralized control of a network is described. The network includes a number of nodes. The method includes creating a database and storing the database on a master node of the network. The database contains topology information regarding a topology of the network. Each of the nodes is coupled to at least one other of the nodes, with the master node being one of the nodes.Type: ApplicationFiled: April 30, 2010Publication date: August 19, 2010Inventors: Ali N. Saleh, H. Michael Zadikian, Zareh Baghdasarian, Vahid Parsi
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Patent number: 7764596Abstract: A method for restoring a virtual path, provisioned between a source and a target node, in a mesh optical network is described. The method, in one embodiment, forwards a resource request in the network to identify an alternate route. Each node identifies and allocates resources for failed virtual path and the virtual path is provisioned using these resources. The constant update of nodal topology by each node may provide a fast identification of nodes with required bandwidth for failed virtual path.Type: GrantFiled: June 25, 2001Date of Patent: July 27, 2010Assignee: Cisco Technology, Inc.Inventors: Ali Najib Saleh, H. Michael Zadikian, Zareh Baghdasarian, Vahid Parsi
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Patent number: 7729290Abstract: A method and apparatus for centralized control of a network is described. The network includes a number of nodes. The method includes creating a database and storing the database on a master node of the network. The database contains topology information regarding a topology of the network. Each of the nodes is coupled to at least one other of the nodes, with the master node being one of the nodes.Type: GrantFiled: October 23, 2007Date of Patent: June 1, 2010Assignee: Cisco Technology, Inc.Inventors: Ali N. Saleh, H. Michael Zadikian, Zareh Baghdasarian, Vahid Parsi
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Patent number: 7633949Abstract: A method of providing network services is described. The network includes a number of nodes, each one of which is coupled to at least one other of the nodes by at least one of a number of optical links. The network is preferably capable of supporting a number of virtual circuits. The method begins with the receiving of a request for a virtual circuit between a first node and a second node of the network. Preferably, the request specifies a quality of service of the virtual circuit. Next, the availability of network resources for supporting a virtual circuit at the requested quality of service is determined. Assuming sufficient network resources are available for support of the virtual circuit, the request is then serviced by provisioning (and maintaining) the requested virtual circuit. Servicing the request preferably includes actions such as provisioning, maintaining, and restoring the virtual circuit, using the requested parameters.Type: GrantFiled: April 21, 2005Date of Patent: December 15, 2009Assignee: Cisco Technology, Inc.Inventors: H. Michael Zadikian, Steven E. Plote, John C. Adler, David P. Autry, Ali Najib Saleh
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Patent number: 7502313Abstract: A method for restoring a virtual path, provisioned between a source and a target node, in a mesh zoned optical network is described. The method, in one embodiment, broadcasts or floods restore path requests in the network to expedite the identification of an alternate route and minimize the service disruption for failed virtual path. The flooding of requests is controlled to ensure efficient performance of the network yet guaranteeing minimum restoration time to allow critical telecommunication related traffic to flow through the network with virtually no interruption. The constant update of nodal topology by each node allows a fast identification of alternate physical path for failed virtual path.Type: GrantFiled: December 29, 2000Date of Patent: March 10, 2009Assignee: Cisco Technology, Inc.Inventors: Ali N. Saleh, H. Michael Zadikian, Zareh Baghdasarian, Vahid Parsi
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Patent number: 7477594Abstract: A method for restoring a virtual path, provisioned between a source and a target node, in a zoned mesh optical network is described. The method, in one embodiment, allocates a primary and a secondary physical path to the virtual path. The two physical paths are node and link disjoint. In case of a failure on one physical path, the network switches the virtual path to the other physical path. The alternate path can be shared among various virtual paths during the restoration.Type: GrantFiled: June 7, 2001Date of Patent: January 13, 2009Assignee: Cisco Technology, Inc.Inventors: Ali Najib Saleh, H. Michael Zadikian, Zareh Baghdasarian, Vahid Parsi
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Publication number: 20080310299Abstract: A method for restoring a virtual path, provisioned between a source and a target node, in a mesh zoned optical network is described. The method, in one embodiment, broadcasts or floods restore path requests in the network to expedite the identification of an alternate route and minimize the service disruption for failed virtual path. The flooding of requests is controlled to ensure efficient performance of the network yet guaranteeing minimum restoration time to allow critical telecommunication related traffic to flow through the network with virtually no interruption. The constant update of nodal topology by each node allows a fast identification of alternate physical path for failed virtual path.Type: ApplicationFiled: October 31, 2007Publication date: December 18, 2008Inventors: Ali N. Saleh, H. Michael Zadikian, Zareh Baghdasarian, Vahid Parsi
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Patent number: 7428212Abstract: A method and apparatus for restoring a virtual path are disclosed. The method includes identifying an alternate physical path and determining whether the alternate physical path is able to support the virtual path by determining whether each node of the second subset of nodes has sufficient resources necessary to support the virtual path. The virtual path is over a physical path in an optical network, and the optical network includes a number of nodes. The physical path includes a first subset of nodes of the nodes. The alternate path includes a second subset of nodes of the nodes and is between a first node and a second node of the first subset of nodes.Type: GrantFiled: May 20, 2002Date of Patent: September 23, 2008Assignee: Cisco Technology, Inc.Inventors: Ali Najib Saleh, H. Michael Zadikian, Zareh Baghdasarian, Vahid Parsi
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Publication number: 20080225696Abstract: A method for restoring a virtual path, provisioned between a source and a target node, in a mesh zoned optical network is described. The method, in one embodiment, broadcasts or floods restore path requests in the network to expedite the identification of an alternate route and minimize the service disruption for failed virtual path. The flooding of requests is controlled to ensure efficient performance of the network yet guaranteeing minimum restoration time to allow critical telecommunication related traffic to flow through the network with virtually no interruption. The constant update of nodal topology by each node allows a fast identification of alternate physical path for failed virtual path.Type: ApplicationFiled: June 2, 2008Publication date: September 18, 2008Inventors: Ali N. Saleh, H. Michael Zadikian, Zarch Baghdasarian, Vahid Parsi
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Patent number: 7352692Abstract: A method for reserving resources for restoration of a failed virtual path in a mesh optical network is defined. The method in one embodiment, defines multiple classes of service for the virtual path by allocating certain path performance, path implementation and path restoration related attributes to the virtual path. Each class of service defines the relative restoration priority of the virtual path. In a case of a path failure, the class of service is used by each node, to determine how the virtual path will be restored. The higher class of service guarantees a maximum acceptable restoration time during a path failure.Type: GrantFiled: May 16, 2001Date of Patent: April 1, 2008Assignee: Cisco Technology, Inc.Inventors: Ali Najib Saleh, H. Michael Zadikian, Zareh Baghdasarian, Vahid Parsi
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Patent number: 7301895Abstract: A method for restoring a virtual path, provisioned between a source and a target node, in a mesh zoned optical network is described. The method, in one embodiment, broadcasts or floods restore path requests in the network to expedite the identification of an alternate route and minimize the service disruption for failed virtual path. The flooding of requests is controlled to ensure efficient performance of the network yet guaranteeing minimum restoration time to allow critical telecommunication related traffic to flow through the network with virtually no interruption. The constant update of nodal topology by each node allows a fast identification of alternate physical path for failed virtual path.Type: GrantFiled: February 1, 2006Date of Patent: November 27, 2007Assignee: Cisco Technology, Inc.Inventors: Ali N. Saleh, H. Michael Zadikian, Zareh Baghdasarian, Vahid Parsi
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Patent number: 7293090Abstract: A method of managing a communications system is disclosed. The method begins with the creation of a resource control block corresponding to a resource of the communications system. The communications system includes, for example, a processor and a resource coupled to the processor. The resource control block maintains information regarding the resource. The method also provides for the maintenance of the resource control block. The processor is configured to maintain the resource control block, and the resource control block is maintained by the processor in response to communications (e.g., a keep-alive message) between the processor and the resource. This embodiment can also include the creation of a processor resource control block corresponding to the processor that is created by the controller in response to a power-up message from the resource. The resource can be, for example, a hardware component of the communications system.Type: GrantFiled: November 15, 2000Date of Patent: November 6, 2007Assignee: Cisco Technology, Inc.Inventors: Ali Najib Saleh, H. Michael Zadikian, John C. Adler, Zareh Baghdasarian, Vahid Parsi
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Patent number: 7286490Abstract: A method and apparatus for centralized control of a network is described. The network includes a number of nodes. The method includes creating a database and storing the database on a master node of the network. The database contains topology information regarding a topology of the network. Each of the nodes is coupled to at least one other of the nodes, with the master node being one of the nodes.Type: GrantFiled: November 30, 2005Date of Patent: October 23, 2007Assignee: Cisco Technology, Inc.Inventors: Ali N. Saleh, H. Michael Zadikian, Zareh Baghdasarian, Vahid Parsi
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Patent number: 7200104Abstract: A method for restoring a virtual path, provisioned between a source and a target node, in a zoned mesh optical network is described. The method, in one embodiment, allocates a primary and a secondary physical path to the virtual path. The two physical paths are network element and link disjoint. In case of a failure in one physical path, the end nodes switch the virtual path to the other physical path.Type: GrantFiled: May 16, 2001Date of Patent: April 3, 2007Assignee: Cisco Technology, Inc.Inventors: Ali Najib Saleh, H. Michael Zadikian, Zareh Baghdasarian, Vahid Parsi