Patents by Inventor Merwyn B. Andrade

Merwyn B. Andrade 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).

  • Patent number: 7760710
    Abstract: A method of detecting a rogue access point is disclosed. A message is directed from a supplicant to a network through a first access point. A response message is received by the supplicant from the first access point. The supplicant can determine the first access point is a rogue access point based on whether the response message from the first access point is in nonconformity with a predetermined expectation. After the access point is determined to be a rogue access point, it is reported to the network through a valid network access point, after the supplicant is authenticated to the network.
    Type: Grant
    Filed: December 20, 2006
    Date of Patent: July 20, 2010
    Assignee: Cisco Technology, Inc.
    Inventors: David E. Halasz, Merwyn B. Andrade
  • Patent number: 7688981
    Abstract: In an example embodiment, a system for providing a Virtual Local Area Network (VLAN) by use of encryption states or encryption keys for identifying a VLAN. A table of data including a VLAN and an associated encryption state or key is provided for assignment of encryption states or keys, for devices in a wireless local area network.
    Type: Grant
    Filed: January 31, 2007
    Date of Patent: March 30, 2010
    Assignee: Cisco Technology, Inc.
    Inventors: David E. Halasz, Victor J. Griswold, Robert C. Meier, Merwyn B. Andrade, Richard D. Rebo
  • Patent number: 7650629
    Abstract: Architecture for providing access to an IEEE 802.1x network. A trust relationship is created between a switch of the network and an access point of the network such that the access point is authorized to communicate over the network. The trust relationship is then extended from the access point to a wireless client requesting connection to the network such that access to the network by said wireless client is authorized.
    Type: Grant
    Filed: January 22, 2008
    Date of Patent: January 19, 2010
    Assignee: Cisco Technology, Inc.
    Inventors: David E. Halasz, Merwyn B. Andrade, Pauline Shuen
  • Patent number: 7627002
    Abstract: In one embodiment, the invention relates to utilization of a single interconnect to support the transmission of data, power and serial control information to an access point. The interconnect comprises at least three and perhaps four twisted pairs such as a CAT-5 cable.
    Type: Grant
    Filed: September 9, 2002
    Date of Patent: December 1, 2009
    Assignee: Aruba Networks, Inc.
    Inventors: Merwyn B. Andrade, Kent H. Headrick
  • Patent number: 7428237
    Abstract: A system for rapidly switching at least one virtual local area network (VLAN) from a first loop-free topology to a second loop-free topology in response to a failure within the first loop-free topology. Each VLAN has one “logical” VLAN which represents the network entities organized into the VLAN and a set of “physical” VLANs each having its own VLAN designation. For each physical VLAN, a different loop-free topology is defined, although only one physical VLAN is “active” at any given time. Messages associated with the logical VLAN are tagged with the designation of the currently active physical VLAN, and forwarded along its loop-free topology. Upon detecting a failure in the loop-free topology, the logical VLAN is rapidly switched to the loop-free topology defined by a second, back-up physical VLAN. Following the switch, messages associated with the logical VLAN are tagged with the designation of this back-up VLAN and are forwarded along its loop-free topology.
    Type: Grant
    Filed: January 6, 2004
    Date of Patent: September 23, 2008
    Assignee: Cisco Technology, Inc.
    Inventors: Silvano Gai, Keith McCloghrie, Merwyn B. Andrade
  • Publication number: 20080134288
    Abstract: Architecture for providing access to an IEEE 802.1x network. A trust relationship is created between a switch of the network and an access point of the network such that the access point is authorized to communicate over the network. The trust relationship is then extended from the access point to a wireless client requesting connection to the network such that access to the network by said wireless client is authorized.
    Type: Application
    Filed: January 22, 2008
    Publication date: June 5, 2008
    Inventors: David E. HALASZ, Merwyn B. Andrade, Pauline Shuen
  • Patent number: 7325246
    Abstract: Architecture for providing access to an IEEE 802.1x network. A trust relationship is created between a switch of the network and an access point of the network such that the access point is authorized to communicate over the network. The trust relationship is then extended from the access point to a wireless client requesting connection to the network such that access to the network by said wireless client is authorized.
    Type: Grant
    Filed: January 7, 2002
    Date of Patent: January 29, 2008
    Assignee: Cisco Technology, Inc.
    Inventors: David E. Halasz, Merwyn B. Andrade, Pauline Shuen
  • Patent number: 7194622
    Abstract: A system for providing a Virtual Local Area Network (VLAN) by use of an encryption states or encryption keys for identifying a VLAN. A table of data including a VLAN and an associated encryption state or key is provided for assignment of encryption states or keys, for devices in a wireless local area network.
    Type: Grant
    Filed: December 13, 2001
    Date of Patent: March 20, 2007
    Assignee: Cisco Technology, Inc.
    Inventors: David E. Halasz, Victor J. Griswold, Robert C. Meier, Merwyn B. Andrade, Richard D. Rebo
  • Patent number: 7181530
    Abstract: A method of detecting a rogue access point is disclosed. A message is directed from a supplicant to a network through an access point. A network response message is received by the supplicant from the access point. A step of determining whether the access point is one of a valid network access point and a rogue access point is performed based on whether the received network response message is respectively in conformity or nonconformity with predetermined expectations. If the access point is determined to be a rogue access point, it is reported to the network. If the access point is determined to be a valid network access point, the supplicant is authenticated to the network.
    Type: Grant
    Filed: July 27, 2001
    Date of Patent: February 20, 2007
    Assignee: Cisco Technology, Inc.
    Inventors: David E. Halasz, Merwyn B. Andrade
  • Patent number: 6678241
    Abstract: A system for rapidly switching at least one virtual local area network (VLAN) from a first loop-free topology to a second loop-free topology in response to a failure within the first loop-free topology. Each VLAN has one “logical” VLAN which represents the network entities organized into the VLAN and a set of “physical” VLANs each having its own VLAN designation. For each physical VLAN, a different loop-free topology is defined, although only one physical VLAN is “active” at any given time. Messages associated with the logical VLAN are tagged with the designation of the currently active physical VLAN, and forwarded along its loop-free topology. Upon detecting a failure in the loop-free topology, the logical VLAN is rapidly switched to the loop-free topology defined by a second, back-up physical VLAN. Following the switch messages associated with the logical VLAN are tagged with the designation of this back-up VLAN and are forwarded along its loop-free topology.
    Type: Grant
    Filed: November 30, 1999
    Date of Patent: January 13, 2004
    Assignee: Cisc Technology, Inc.
    Inventors: Silvano Gai, Keith McCloghrie, Merwyn B. Andrade