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: 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: 7349326Abstract: 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: October 26, 2001Date of Patent: March 25, 2008Assignee: Cisco Technology, Inc.Inventors: Haig Michael Zadikian, Zareh Baghdasarian, Ali Najib Saleh, Vahid Parsi
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Publication number: 20080037562Abstract: 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: October 23, 2007Publication date: February 14, 2008Inventors: Ali Saleh, H. 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
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Publication number: 20060251419Abstract: 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: ApplicationFiled: September 27, 2005Publication date: November 9, 2006Inventors: Haig Zadikian, Ali Saleh, John Adler, Zareh Baghdasarian, Vahid Parsi
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Publication number: 20060153066Abstract: 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: February 1, 2006Publication date: July 13, 2006Inventors: Ali Saleh, H. Zadikian, Zareh Baghdasarian, Vahid Parsi
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Publication number: 20060077909Abstract: 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, 2005Publication date: April 13, 2006Inventors: Ali Saleh, H. Zadikian, Zareh Baghdasarian, Vahid Parsi
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Patent number: 6990068Abstract: 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 30, 2000Date of Patent: January 24, 2006Assignee: Cisco Technology, Inc.Inventors: Ali N. Saleh, H. Michael Zadikian, Zareh Baghdasarian, Vahid Parsi
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Patent number: 6973023Abstract: 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: December 30, 2000Date of Patent: December 6, 2005Assignee: Cisco Technology, Inc.Inventors: Ali N. Saleh, H. Michael Zadikian, Zareh Baghdasarian, Vahid Parsi
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Patent number: 6950391Abstract: 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: October 7, 2003Date of Patent: September 27, 2005Assignee: Cisco Technology, Inc.Inventors: Haig Michael Zadikian, Ali Najib Saleh, John Conlon Adler, Zareh Baghdasarian, Vahid Parsi
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Publication number: 20050201380Abstract: 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: ApplicationFiled: February 9, 2005Publication date: September 15, 2005Inventors: Ali Saleh, Haig Zadikian, Zareh Baghdasarian, Vahid Parsi
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Publication number: 20050135234Abstract: 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: ApplicationFiled: February 9, 2005Publication date: June 23, 2005Inventors: Ali Saleh, Haig Zadikian, Zareh Baghdasarian, Vahid Parsi
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Publication number: 20050036442Abstract: 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: ApplicationFiled: June 7, 2001Publication date: February 17, 2005Inventors: Ali Saleh, H. Zadikian, Zareh Baghdasarian, Vahid Parsi
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Patent number: 6856629Abstract: A method and a communication circuit for directing control of communication signals in a concatenated payload in a communication circuit is disclosed. The method and apparatus includes receiving a multiplex order of the concatenated payload in M communication signals, dividing the M communication signals by three to determine a number Y, and determining the control of the M communication signals by designating the first signal of the M communication signals as a control signal, designating the second signal through a Yth signal of the M communication signals as being controlled by the immediately preceding signal thereto, and designating each Y+1th signal of the M signals through the Mth communication signal as being controlled by a signal Y positions prior thereto. The method and communication circuit includes communication signals that are synchronous transport signals.Type: GrantFiled: June 30, 2000Date of Patent: February 15, 2005Assignee: Cisco Technology, Inc.Inventors: Vahid Parsi, Robert A. Hall
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Patent number: 6856627Abstract: A method of operating an 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: January 15, 1999Date of Patent: February 15, 2005Assignee: Cisco Technology, Inc.Inventors: Ali Najib Saleh, Haig Michael Zadikian, Zareh Baghdasarian, Vahid Parsi
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Patent number: 6850486Abstract: A method of operating an 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: October 17, 2001Date of Patent: February 1, 2005Assignee: Cisco Technology, Inc.Inventors: Ali Najib Saleh, Haig Michael Zadikian, Zareh Baghdasarian, Vahid Parsi
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Publication number: 20040196838Abstract: 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: ApplicationFiled: April 20, 2004Publication date: October 7, 2004Inventors: Haig Michael Zadikian, Ali Najib Saleh, John Conlon Adler, Zareh Baghdasarian, Vahid Parsi