International Business Machines Corporation

Hewlett-packard Development Company, L.p.

Amitabha Biswas

Jayakrishna Kidambi

Sushma Anantharam

Harshad S Padhye

Stephan Benny

Vijoy A Pandey

Uday Shankar Nagaraj

John I Buswell

Dorit Rond

Nilanjan Mukherjee

Bhalachandra G Banavalikar

Vinit Jain

Eran Raichstein

Prashanth K Nageshappa

Nirapada Ghosh

Anna Levin

Yaniv Ben-Itzhak

Prashant Modi

Rachappa B Goni

Gang Tang

Dayavanti G Kamath

Zi Jin Tao

Mehrdad Khalili

Santosh Rajagopalan

Kathryn Hampton

Yiu Yip

Doris Sayon

Tang Gang

Keshav G Kamble

Dar-Ren Leu

Sudheesh S Kairali

Chandarani J Mendon

Charles L Hudson

Robert Teisberg

Daniel Nathan Cripe

Malarvizhi Kandasamy

Ryan Moats

Sisir Chowdhury

Ryan D Moats, Iii

Detecting resource errors in a heterogeneous computing environment is provided. A plurality of individual resource dependency graphs corresponding to a plurality of computing systems that comprise the heterogeneous computing environment is consolidated to form a consolidated resource dependency graph. An analysis of respective nodes representing respective resources of the heterogeneous computing environment in the consolidated resource dependency graph is performed to identify a resource error caused by a new resource being added to a computing system of the plurality of computing systems based on defined rule sets. It is determined whether the new resource causes an error to sibling resources at a same level under a parent resource in the consolidated resource dependency graph based on the analysis. In response to determining that the new resource does not cause an error to the sibling resources, the new resource is deployed in the computing system of the heterogeneous computing environment.

Detecting resource redundancy and conflicts in a heterogeneous computing environment

Embodiments of the invention provide a method for data replication in a networking system comprising multiple computing nodes. The method comprises maintaining a data set on at least two computing nodes of the system. The method further comprises receiving a data update request for the data set, wherein the data update request includes a data update for the data set. The data set on the at least two computing nodes is updated based on the data update request received.

Data replication for a virtual networking system

In one embodiment, an apparatus includes a processor and logic configured to designate one of a plurality of endpoint virtual network identifiers (EPVNIDs) for each endpoint device in a network, wherein each EPVNID is configured to be shared by one or more endpoint devices, designate a common waypoint virtual network identifier (WPVNID) for all transparent waypoint devices in the network which perform a same function, designate a unique WPVNID for each routed waypoint device in the network, designate a common virtual network identifier (VNID) for all virtual switches in a single virtual network, wherein a different VNID is designated for each virtual network, and create a service chain table comprising each VNID, WPVNID, and EPVNID designated in the network individually correlated with at least a pair of VNIDs: a source VNID and a destination VNID, based on one or more policies affecting application of services to packets in the network.

Servicing packets in a virtual network and a software-defined network (SDN)

Embodiments of the invention relate to overlay network address management. One embodiment includes an overlay gateway including an overlay network manager associated with a physical network. The overlay network manager prevents duplicate address assignment for overlay domains having a first sharing status and performs address translation for overlay domains having a second sharing status. Address translation is avoided for overlay domains having the first sharing status.

Address management in an overlay network environment

Embodiments of the present invention provide methods, computer program products, and systems for fulfilling a service chain request. Embodiments of the present invention can be used to collect network data of a plurality of instances of services and connections between the plurality of instances of services and redefine service chains to direct flow to an alternative instance of a service responsive to determining that an instance of a service in a service chain has become inaccessible. Embodiments of the present invention can be used to fulfill a service chain request and avoid one or more instances of services (and/or connections there between) that could cause a delay between transmitting data packets through the service chain.

Adaptive service chain management

Embodiments of the invention provide a method for load balancing a networking system comprising multiple computing nodes. The method comprises maintaining one or more data sets on at least one computing node. The method further comprises receiving, from each computing node, a load information unit for the computing node, wherein the load information unit relates to resource usage on the computing node. For each computing node, the method determines whether the load information for the computing node exceeds a corresponding load threshold for the computing node. A data set on at least one computing node is transferred to another computing node when the load information for the at least one computing node exceeds a corresponding load threshold for the at least one computing node.

Load balancing for a virtual networking system

In a distributed network environment, a first virtual machine sends a first virtual machine control information to a first network system. The first network system sends a first control information to a first network control system in response to receiving the first virtual machine control information. The first network control system sends a portion of the first control information to a number of network systems. The first network control system sends a second control information to the first network system. The first virtual machine sends a first packet to the first network system which generates a unicast packet using a portion of the first packet and a portion of the second control information. A second network system receives and processes the unicast packet. The second network system sends a copy of the processed unicast packet to a second virtual machine associated with a second tenant.

Transporting multi-destination networking traffic by sending repetitive unicast

In the context of a client sub-system that requires the use of directory services on behalf of a tenant (such as an overlay tenant), learning an identity of a server node, that can provide such directory services by: (i) sending, by the client sub-system to a first server node, a first directory service request for directory service for a first tenant; (ii) receiving, by the client sub-system, a first acknowledgement from a second server node; and (iii) learning, by the client sub-system, that the second server node can provide directory service for the first tenant based upon the first acknowledgement.

Directory service discovery and/or learning

In one embodiment, an apparatus includes a processor and logic integrated with and/or executable by the processor. The logic is configured to cause the processor to receive one or more packets to be switched to a next hop, the one or more packets indicating a destination address and a first virtual network identifier (VNID). The logic is also configured to cause the processor to send a query to a controller in order to determine a service chain for the one or more packets, the query including the first VNID and the destination address. Moreover, the logic is configured to cause the processor to receive a response that includes the next hop and a next routed hop for the one or more packets. Other systems, methods, and computer program products are described in accordance with more embodiments.

In one embodiment, a controller includes a processor and logic integrated with and/or executable by the processor, the logic being configured to receive a query from a network device for instruction regarding where to send network traffic, the query including a first cookie, determine whether the first cookie is legitimate, and send a message to the network device, the message including either: the first cookie in response to a determination that the first cookie is legitimate or a second cookie which indicates a second next hop device determined by the controller in response to a determination that the first cookie is not legitimate. Other systems, methods, and computer program products are described in more embodiments.

Support for high availability of service appliances in a software-defined network (SDN) service chaining infrastructure

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San Francisco, CA, United States of America

Amitabha Biswas