Patents Assigned to Cisco Technology
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Patent number: 7672996Abstract: In one embodiment, the methods and apparatuses detect a conference; detect a connection between a participant and the conference; and automatically reconnect the participant with the conference after participant is accidentally disconnected from the conference.Type: GrantFiled: January 25, 2007Date of Patent: March 2, 2010Assignee: Cisco Technology, Inc.Inventors: Shawn Farshchi, Eric Montoya
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Patent number: 7672459Abstract: Methods, apparatuses, and systems directed to a key distribution and caching mechanism that facilitates roaming in wireless networks. In one implementation, the present invention reduces the latency associated with handoffs by reducing the time required to set up encryption or other secure access mechanisms between access points and clients in the wireless network infrastructure. In one implementation, the present invention operates proactively to distribute authentication credential information to selected components of the wireless network infrastructure before a client roams to another access point.Type: GrantFiled: July 15, 2005Date of Patent: March 2, 2010Assignee: Cisco Technology, Inc.Inventors: Robert B. O'Hara, Jr., Patrice R. Calhoun, Joshua Glenn Broch
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Patent number: 7672332Abstract: An improved addressing scheme is disclosed for use in access networks. According to a specific embodiment, upstream and/or downstream channels may be grouped together based upon logical associations rather than physical associations. Further, according to at least one embodiment of the present invention, various techniques are described for routing selected channel MAP messages to appropriate channels and/or nodes within the access network.Type: GrantFiled: May 19, 2006Date of Patent: March 2, 2010Assignee: Cisco Technology, Inc.Inventor: John T. Chapman
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Patent number: 7672249Abstract: An Internet appliance accesses an HTML page on a Web site containing configuration information for the appliance, such as an Internet compatible telephone. Data from the HTML page are downloaded to the appliance to modify its options or settings automatically upon accessing the HTML page, or as directed by the user. The data may be downloaded to a programmable memory in the Internet appliance and the stored data may be used to upgrade the appliance. The upgrade HTML page may include information to alert the user when the new information is available regarding changes to options and settings of the appliance. Alternatively, data from the Internet appliance are placed in an HTML page and the data are then uploaded to the Web site. Additional embodiments provide other functions that may be placed in an HTML page to effect some internal action in the Internet appliance, such as checking e-mail.Type: GrantFiled: October 17, 2006Date of Patent: March 2, 2010Assignee: Cisco Technology, Inc.Inventors: Joseph Giordano, III, Jacob Samboursky
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Patent number: 7673336Abstract: A method and apparatus for controlling access to data communication applications is disclosed. According to the method, the DNS names of the servers of the data communication applications are identified. The identified DNS names are used to determine the IP addresses of the servers. Furthermore, the identified IP addresses are used to control access to the data communication applications for the requests going to the servers of the data communication applications.Type: GrantFiled: November 17, 2005Date of Patent: March 2, 2010Assignee: Cisco Technology, Inc.Inventors: Sridhar Alse, Chandra Mohan Padmati, Gary Sockrider
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Patent number: 7672373Abstract: A method and a carrier medium instructing a processor to execute a method. The method includes accepting a compressed video stream compressed by a compression method that uses macroblocks of possibly different macroblock types for each frame predictive encoding frames. The method further includes identifying a sequence of frames that are substantially visually indistinguishable and that include a predictively encoded frame and the at least one reference frame of the predictively encoded frame. The method further includes creating an ordered set of macroblocks, with the macroblock types of different macroblocks in the ordered set used to encode digital watermark information. The method further includes replacing the predictively encoded frame of the identified sequence with a newly-encoded predictively encoded replacement frame that contains the created ordered set of macroblocks, including the encoded watermarking information.Type: GrantFiled: April 11, 2005Date of Patent: March 2, 2010Assignee: Cisco Technology, Inc.Inventors: John A. Toebes, Douglas Jay Walker
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Patent number: 7672314Abstract: In one embodiment, a technique for processing data packets in a data network comprising a plurality of virtual local area networks (VLANs) is disclosed. A data network is divided into a core network and a plurality of domain networks, each domain network coupled to one or more customer networks. A plurality of VLANs are apportioned between the domain networks and the core network. The VLANs that are allocated to the domain networks are local to each domain network. However, the VLANs allocated to the core network are global to the domain networks and core network. When a data packet is acquired at a domain ingress edge node in a particular domain network, the node generates a domain network packet from information contained in the data packet. The node then tags the domain network packet with a domain VLAN (DVLAN) tag associated with a VLAN allocated to the domain network.Type: GrantFiled: July 9, 2004Date of Patent: March 2, 2010Assignee: Cisco Technology, Inc.Inventor: Anusankar Elangovan
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Patent number: 7673048Abstract: A client device establishes a first tunnel connection or tunnel, through a public network, with a first gateway of a private network and establishes, through the tunnel connection, a data connection with a destination device within the private network. The first gateway monitors or analyzes the geographic locations of the gateways associated with the private network relative to geographic location of the destination device associated with the data connection. Based upon such the monitoring, the first gateway transmits information to the client device relating to establishment of a second tunnel connection or tunnel with a second gateway of the private network. The client device establishes the second tunnel connection with the second gateway and establishes a data connection with the destination device through the second gateway.Type: GrantFiled: February 24, 2003Date of Patent: March 2, 2010Assignee: Cisco Technology, Inc.Inventors: James W. O'Toole, Jr., William Mark Townsley
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Patent number: 7672230Abstract: A dynamic channel change technique is disclosed which may be implemented between nodes and a Head End of an access network. Initially a network device may communicate with the Head End via a first downstream channel and a first upstream channel. When the network device receives a dynamic channel change request which includes instructions for the network device to switch to a second downstream channel, the network device may respond by switching from the first downstream channel to the second downstream channel. Thereafter, the network device may communicate with the Head End via the second downstream channel and first upstream channel. Further, according to a specific embodiment, the dynamic channel change request may also include an upstream channel change request for causing the network device to switch from a first upstream channel to a second upstream channel.Type: GrantFiled: July 10, 2006Date of Patent: March 2, 2010Assignee: Cisco Technology, Inc.Inventors: John T. Chapman, Daniel W. Crocker, Feisal Y. Daruwalla, Joanna Qun Zang, Yong Lu
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Patent number: 7672252Abstract: A method for resolving switch number conflicts in a stackable switch system includes communicating a message between switches in the stackable switch system and determining, based on the communicated message, that two or more switches in the stackable switch system have the same switch number. The method also includes, in response to the determination that two or more switches have the same switch number, determining whether any of the switches should keep the switch number or select a new switch number.Type: GrantFiled: January 30, 2008Date of Patent: March 2, 2010Assignee: Cisco Technology, Inc.Inventors: Brian W. Fallis, Prasad Rao
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Patent number: 7673057Abstract: A method and apparatus are described for controlling connection admission for a connection request in a network. A first estimator estimates an equivalent cell rate (ECR) based on description of the connection request. The description includes a booking factor. A second estimator estimates a measured utilization factor for admitted connections in the network using measurements of data streams arriving at queues. A controller is coupled to the first and second estimators to generate an admission decision for the connection request based on the estimated ECR and the estimated measured utilization factor.Type: GrantFiled: February 2, 2000Date of Patent: March 2, 2010Assignee: Cisco Technology, Inc.Inventors: Man Pak Yip, Madhav V. Marathe, David Anthony Hughes
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Patent number: 7672244Abstract: A network device that manages the flow rate of a stream of packets traveling within a network is converted from managing based on data rate to managing based on packet rate. In one embodiment, an interface receives from the device an actual length of a packet and provides to the device an effective length for the packet. A multiplexer generates the effective length by selecting the actual length during data rate mode and selecting a virtual length during packet rate mode. Various embodiments work with network devices that use various traffic management techniques. Such techniques include, but are not limited to: virtual time algorithms for determining excess packets; policing techniques that drop excess packets; and shaping techniques that buffer excess packets for possible later transmission.Type: GrantFiled: March 30, 2005Date of Patent: March 2, 2010Assignee: Cisco Technology, Inc.Inventor: Adam Sweeney
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Patent number: 7673025Abstract: Techniques are provided for controlling access message flow. The techniques include receiving one or more access messages; determining one or more sets of features, one for each access message; receiving a particular access message; determining a particular set of one or more features for the particular access message; determining whether the particular access message satisfies a particular condition based on the particular set of one or more features and the one or more sets of features; and if the particular access message satisfies the particular condition, performing a responsive action based on the particular condition.Type: GrantFiled: April 29, 2004Date of Patent: March 2, 2010Assignee: Cisco Technology, Inc.Inventors: Jeremy Stieglitz, John Zamick
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Patent number: 7672323Abstract: In a network system for transporting GFP-encapsulated Fibre Channel/FICON data across a SONET/SDH transport network between two Fibre Channel/FICON ports, a transport interface for one Fibre Channel/FICON port intelligently allocates the amount of buffers for receiving Fibre Channel/FICON data from the other Fibre Channel/FICON port by determining the latency of travel across the SONET/SDH transport network. The first transport interface inserts a special latency instruction message into the Fibre Channel/FICON data before encapsulation in a GFP frame. After transport across the SONET/SDH network, the receiving second transport interface immediately sends the special latency instruction message back across the SONET/SDH transport network to the first transport interface which times the return of the special latency instruction message. From the time interval, the first transport interface can determine the latency of the SONET/SDH transport network and allocates the amount of buffers appropriately.Type: GrantFiled: January 14, 2005Date of Patent: March 2, 2010Assignee: Cisco Technology, Inc.Inventors: Ganesh Sundaram, John Diab, Hitesh Amin, Thomas Eric Ryle
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Patent number: 7673021Abstract: Approaches for provisioning phones in packet voice networks are disclosed. One approach provides determining that an Internet Protocol (IP) phone has registered in a network; receiving a unique identifier of the IP phone; determining, based on the unique identifier of the IP phone, a user identifier of an individual user associated with the IP phone; generating a configuration for the IP phone based on the user identifier; and providing the configuration to the IP phone. Various approaches for deriving a user identifier based on the unique identifier of the phone are disclosed.Type: GrantFiled: February 12, 2004Date of Patent: March 2, 2010Assignee: Cisco Technology, Inc.Inventors: Michael Tasker, Jawhny Cooke, Laure Andrieux, Fong Shen, Najeeb Farhan Haddad
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Patent number: 7672223Abstract: Network connection switchover is accomplished through a method comprising receiving information defining a first connection between a first network device and a computer; establishing a replication channel between the first network device and a backup device; storing backup control information at the backup device; communicating a message flow between the first network device and the computer on the first transport connection; in response to unavailability of the first network device, communicating messages on the replication channel that cause (a) establishing a second connection between the backup device and the computer; (b) continuing communication of the message flow between the backup device and the computer based on the backup control information. TCP connections, for example, can be switched from an active device to a backup device without reset or re-transmission.Type: GrantFiled: March 7, 2005Date of Patent: March 2, 2010Assignee: Cisco Technology, Inc.Inventors: Sumandra Majee, Anurag Kahol, Alexander Waterman, Anh Nguyen, Patrick Tate, Martin Grimm
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Patent number: 7669321Abstract: A test site is incorporated on a circuit board having a set of test connections passing through a test via on respective test connection layer, the test connection layers including (1) a first layer adjacent to a target layer, and (2) a second layer spaced apart from the target layer with the first layer therebetween. The test via is back-drilled from the direction of the second layer to remove undesired via metallization, breaking the test connections of all the layers through which it passes, and the continuity of the test connections is measured to determine a pattern of broken and non-broken test connections resulting from the back-drilling. The pattern of broken and non-broken test connections is examined to ascertain the actual depth of the back-drilling in relation to the target layer.Type: GrantFiled: March 14, 2006Date of Patent: March 2, 2010Assignee: Cisco Technology, Inc.Inventors: John Benjamin Levy, John Martin, Farhad Pakravan
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Publication number: 20100049998Abstract: A method and apparatus for changing power class for a powered device are provided. During operation, a powered device, such as an IP telephone, receives power from a power source via a PoE device. In the event that the powered device detects connection to a second powered device, such as an IP telephone module, the powered device transmits a classification signal to the power source. Based upon the classification signal, the power source performs a powered device classification procedure to reclassify the powered device, such as according to an IEEE 802.3af standard, and provide an increase amount of power to the powered device. The powered device, in turn, provides a portion of the power to the modular device. The modular powered device, therefore, receives power directly from the first powered device and does not require additional equipment in order to operate.Type: ApplicationFiled: October 30, 2009Publication date: February 25, 2010Applicant: Cisco Technology, Inc.Inventors: Roger Karam, Robert Thomas
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Publication number: 20100049808Abstract: In one embodiment, a method includes engaging in real-time communications using a first application, and dynamically granting permissions that enable a second participant to access a tool associated with a first participant through the first application. The real-time communications involve a plurality of participants that include the first participant and the second participant. The permissions are dynamically granted using the first application.Type: ApplicationFiled: August 22, 2008Publication date: February 25, 2010Applicant: Cisco Technology, Inc.Inventor: Jonathan Rosenberg
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Publication number: 20100046511Abstract: Disclosed are, inter alia, methods, apparatus, computer-storage media, mechanisms, and means associated with automated discovery of network devices supporting particular transport layer protocols, such as, but not limited to Stream Control Transmission Protocol (SCTP). Packet switching devices automatically discover peer packet switching devices supporting a particular transport layer protocol, and then establish a session using the particular transport layer protocol between them for subsequent use in transporting packets.Type: ApplicationFiled: August 25, 2008Publication date: February 25, 2010Applicant: Cisco Technology, Inc., a corporation of CaliforniaInventors: Mohamed Khalid, Kenneth Durazzo, Randall R. Stewart, Vivek Datar, Ramakrishnan Rajamoni