Patents by Inventor Vahid Parsi
Vahid Parsi 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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Patent number: 8427962Abstract: A method of communicating information regarding a failure is disclosed. The method includes generating failure information. The failure affects a virtual path, which is between a first node and a second node. A first zone includes the first node, and a second zone includes the second node. The failure information can include, for example, a zone identifier and/or an action code.Type: GrantFiled: March 24, 2008Date of Patent: April 23, 2013Assignee: Cisco Technology, Inc.Inventors: Haig Michael Zadikian, Zareh Baghdasarian, Ali Najib Saleh, 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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Patent number: 7933266Abstract: A signal router, configured to receive information carried by a first signal and transmit the information on a second signal, is described. The signal router, using routing information it gathers, selects the second signal from a number of signals, with the first and the second signals differing in at least one physical characteristic. The signal router operates in a network of a number of such signal routers, and so each one of the signal routers is coupled to at least one of the other signal routers. The routing information is used to create a circuit from a first one of the signal routers to a second one of the signal routers. Once the circuit is created, the information is routed over the circuit. According to one aspect of the present invention, the signals are optical signals.Type: GrantFiled: April 20, 2004Date of Patent: April 26, 2011Assignee: Cisco Technology, Inc.Inventors: Haig Michael Zadikian, Ali Najib Saleh, John Conlon Adler, 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: 7729337Abstract: A method of operating a network is described. The network includes a number of nodes connected by a number of links. A method according to the present invention provisions a virtual path between a first and a second one of the plurality of nodes by: identifying the first and the second nodes, discovering a physical path from the first node to the second node, and establishing the virtual path. The method discovers a physical path from the first node to the second node by automatically identifying nodes forming the physical path. The method establishes the virtual path by configuring a set of connections between the nodes forming the physical path.Type: GrantFiled: December 29, 2000Date of Patent: June 1, 2010Assignee: Cisco Technology, Inc.Inventors: Ali Najib Saleh, Haig 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: 7633854Abstract: A method of operating an optical network is described. The network includes a number of nodes connected by a number of links. A method according to the present invention provisions a virtual path between a first and a second one of the plurality of nodes by: identifying the first and the second nodes, discovering a physical path from the first node to the second node, and establishing the virtual path. The method discovers a physical path from the first node to the second node by automatically identifying nodes forming the physical path. The method establishes the virtual path by configuring a set of connections between the nodes forming the physical path.Type: GrantFiled: February 9, 2005Date of Patent: December 15, 2009Assignee: Cisco Technology, Inc.Inventors: Ali Najib Saleh, Haig Michael Zadikian, Zareh Baghdasarian, Vahid Parsi
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Patent number: 7602807Abstract: A method is provided to allocate bandwidth from a first node to a second node in a optical network. The method begins by accepting a request from an end-user, who requests a virtual path between the first node and the second node. The first and second nodes are ones of a number of such nodes. Each one of the nodes is coupled to at least one other node by at least one of a number of optical links. The nodes and links form the optical network. The virtual path has a bandwidth requirement associated therewith. Next, the service provider determines an amount of bandwidth available between the first and the second nodes. The service provider then allocates at least a portion of the amount of bandwidth available between the first and second nodes equal to the bandwidth requirement, so long as the bandwidth requirement is not greater than the amount of bandwidth available between the first and second nodes.Type: GrantFiled: September 27, 2005Date of Patent: October 13, 2009Assignee: Cisco Technology, Inc.Inventors: Haig Michael Zadikian, Ali Najib Saleh, John Conlon Adler, Zareh Baghdasarian, Vahid Parsi
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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: 7424035Abstract: A method of operating an optical network is described. The network includes a number of nodes connected by a number of links. A method according to the present invention provisions a virtual path between a first and a second one of the plurality of nodes by: identifying the first and the second nodes, discovering a physical path from the first node to the second node, and establishing the virtual path. The method discovers a physical path from the first node to the second node by automatically identifying nodes forming the physical path. The method establishes the virtual path by configuring a set of connections between the nodes forming the physical path.Type: GrantFiled: February 9, 2005Date of Patent: September 9, 2008Assignee: Cisco Technology, Inc.Inventors: Ali Najib Saleh, Haig Michael Zadikian, Zareh Baghdasarian, Vahid Parsi