Cisco Technology, Inc.

Alpesh S Patel

Kent Kinchu Leung

Gopal K Dommety

Milind Kulkarni

Sravan Vadlakonda

Stefan Bernard Raab

Rohini Kasturi

Pascal Thubert

Madhavi Wunnava Chandra

Srinath Gundavelli

Chris O'Rourke

Praveen Joshi

Naveen Paulkandasamy

Daniel James Cafe

Ben Kelly

John Albert Toebes

Robert Charles Meier

Timothy S Olson

Mark Albert

Matthew Kuhlke

Syam Sundar Appala

Gilbert C Yu

Marshall Uy Alexander

Stephen Joseph Moffett

Keng Leung

Jean-Philippe Vasseur

Patrick Wetterwald

Eric Michel Levy-Abegnoli

Kenneth Durazzo

John Michael Lake

Louis F Menditto

Robert Michael Batz

Abhay Kumar Roy

Vincent Jean Ribiere

Joseph Salowey

Anantha Ramaiah

Udayakumar Srinivasan

Robert A Mackie

Walter Glenn Dixon

Senthil M Sivakumar

Kui Zhang

Christopher O'Rourke

Syam Sundar V Appala

Gaetan Feige

Rabih A Dabboussi

Yu-Cheng Shao

John M Glotzer

Richard Wellum

Rajeev Koripalli

Jose Palafox

Randall Benjamin Pittman

Milind M Kulkarni

Madhavi W Chandra

Joseph A Salowey

Techniques and architecture are described for inducing precise delays in a network device (network node) that has the capability to act on packets/traffic flows based on policy configurations of the network device and delays experienced by traffic in the network device. This capability may be used for testing and verification of the network device to verify that the network device meets the configured policies. Additionally, this capability may be utilized in an operational network to selectively induce delays and measure its impact for purposes such as, for example, planning, stress testing, resiliency, etc.

Inducing delay from a peer node to quantify latency-based behavior

A method for tracking virtual machine usage includes deploying, by a client machine with a client Internet Protocol (IP) address, an instance of a virtual machine. The client machine generates an identification for the instance of the virtual machine and requests a domain name system (DNS) lookup for a domain name string from a tracker server specified by a tracker IP address, where the domain name string comprises the identification. The tracker server receives the DNS lookup from the client machine and records the identification and the client IP address.

Method of tracking usage of virtual machines

In one embodiment, a first device (e.g., a host device or power distribution unit) stores identification information of the first device, and determines, over a power connection, when the first device is in powered connectivity with a second device (e.g., a power distribution unit or host device, respectively). The first device may then communicate, with the second device over the power connection, identification information of at least one of either the first or second device, where the communicated identification information is accessible to a third device (e.g., a server) via a data network due to the communicating over the power connection. In another embodiment, a server may determine, based on the identification information, a physical location of a power distribution unit, and may deduce, based on the physical location of the power distribution unit, that a host device is physically located at the physical location of the power distribution unit.

Data center management using device identification over power-line

The disclosed embodiments support mobility internal and external to enterprise networks. Service providers provide mobility by providing Home Agent functionality corresponding to each Enterprise network. In this manner, mobility may be provided to Mobile Nodes both internal and external to their enterprise networks. Moreover, data packets may be transmitted by Mobile Nodes to Correspondent Nodes, whether they are within their enterprise network, the Service Provider network, or the Internet.

Mobile network device multi-link optimizations

Methods and apparatus for providing availability information of a virtual machine to a load balancer are disclosed. The availability information of the virtual machine may be normalized information from performance metrics of the virtual machine and performance metrics of the physical machine on which the virtual machine operates. The normalized availability of a virtual machine is provided by a feedback agent executing on the virtual machine. Alternatively, the normalized availability of a virtual machine is provided by a feedback agent executing on a hypervisor executing multiple virtual machines on a common set of physical computing hardware.

Server load balancing based on virtual utilization, physical utilization, and feedback

In one embodiment, an apparatus receives an advertisement from each of one or more Home Agents, the advertisement including a first set of information associated with a corresponding one of the Home Agents, each advertisement being in a first protocol. The apparatus obtains the first set of information associated with a corresponding one of the Home Agents from each advertisement. The apparatus composes a router advertisement including a second set of information associated with at least one of the Home Agents, the router advertisement being in a second protocol. The apparatus then sends the router advertisement.

Methods and apparatus for home agent discovery in mobile IP using link state advertisements

A system that can store attributes from a plurality of past communications by a terminal device to one or more recipients. The system can also identify a routine based on the stored attributes. The system can also generate a contact list including at least one of the one or more recipients according to the routine. The system can also output the contact list. The attributes may include identifications of one or more recipients of the plurality of past communications and an order in which the one or more recipients are communicated with from one or more locations of the terminal device during the plurality of past communications.

Dynamic contact list

According to one embodiment, availability information describing virtual machines running on physical machines is accessed. The availability information associates each virtual machine with a physical resource used by the virtual machine. Use by the virtual machines is determined from the availability information. Availability of the physical resources is determined according to the use. Server load is balanced according to the availability of the physical resources. According to another embodiment, the following is performed until a load is accommodated: selecting a server having a load that is less than an expansion threshold; loading the server until the expansion threshold is reached; selecting a next server having a load that is less than a next expansion threshold; and loading the next server until the next expansion threshold is reached. Load of a low load server is determined to be below a contraction threshold, and the low load server is drained.

Balancing server load according to availability of physical resources based on the detection of out-of-sequence packets

Mobile network operator multihoming and enterprise VPN solution

Techniques are provided herein for receiving information at a device in a network indicating a load level for one or more server load balancers that are configured to manage network traffic load for a plurality of servers. The information represents an aggregate load across the plurality of servers. A determination is made as to whether the load level for one or more of the server load balancers exceeds a predetermined threshold. In response to determining that the load level for one or more of the server load balancers exceeds the predetermined threshold, an additional load balancer is activated that is configured to manage network traffic load for the plurality of servers. In response to determining that the load level for one or more of the server load balancers does not exceed the predetermined threshold, an additional load balancer is deactivated that was configured to manage network traffic load for the plurality of servers.

Server load balancer scaling for virtual servers

The present disclosure generally provides techniques for establishing a unique, ephemeral home address (hoa)/home agent address (ha') address pair that may be limited to use in a session having a defined lifetime. Limiting the use of this dynamic address pair to a session lifetime and by preventing a mobile node from knowing the static address of a home agent may help protect the home agent from attacks.

Dynamically assigning unique addresses to endpoints

Embodiments of the invention improve the quality of search results returned for a given set of search terms based on metadata associated with the user performing the search. A search query may specify metadata elements to consider in ranking the search results. The metadata used may include bookmarks set by the user (either locally or at a social bookmaking site), group bookmarks, etc. In such a case, search results may be reordered to improve the ranking of websites that are both in the search results and in the bookmarks.

Enhancing and optimizing enterprise search

In accordance with various embodiments, a Home Agent receives a registration request and sends a registration reply having a network mask extension including a network mask associated with the home address of the Mobile Node. Once the Mobile Node has obtained its network mask, it may send packets such as broadcast packets, as well as roam to its Home Agent. Additionally, in accordance with various embodiments, when a Home Agent receives a broadcast packet, it forwards the broadcast packet to a care-of address of the broadcast packet without duplicating the broadcast packet. Instead, the Foreign Agent obtains the subnet from the broadcast packet, identifies the Mobile Node(s) on that subnet, and duplicates the broadcast packet for transmission to the identified Mobile Node(s).

Methods and apparatus for broadcast optimization in mobile IP

Growing community of inventors

Morrisville, NC, United States of America

Alpesh S Patel