Hewlett-Packard Development Company, L.p.

Hewlett-Packard Development, L.p.

Swamy Jagannadha Mandavilli

Kotilingareddy Bhavanam

Muthukumar Suriyanarayanan

Anil A Kuriakose

Venkatesh Mahalingam

Sunil Menon

Anuradha Venkataraman

Srikanth Natarajan

Dipankar Gupta

Philip Andrew Flocken

Damian Horner

Lawrence M Besaw

Robert Lovejoy Raymond

Robert Strahan

Zhi-Qiang Wang

Gabriel Wechter

Akash Deep

Andrew Walding

Chris Schleicher

Swapnesh Banerjee

Zhiqiang Wang

Richard David Lamb

Yong Boon Ho

Deepthi Bhushan

Zhi Qlang Wang

Guido Laubner

Joseph M Odenwald

A method for managing identifiers can include receiving, in an identifier management system, a request for an identifier in a computing system. The method can also include verifying availability of the identifier. The method can further include returning an affirmative response to a requesting party.

Identifier management

An inter-provider virtual provider network path is identified by identifying a provider network provider edge router having a provider edge interface serving, obtaining routing information from the provider edge router, identifying, from the routing information, a remote customer edge interface of a customer edge router connected to the provider edge router by an intermediate service provider, and identifying the path and associated links between the identified provider edge interface and the identified remote customer edge interface.

Interprovider virtual private network path identification

Systems, methods, and machine-readable and executable instructions are provided for customer edge device problem identification. Customer edge device problem identification can include obtaining a status of a connection between a provider edge (PE) device and a customer edge (CE) device. Customer edge device problem identification can also include determining whether the status of the connection is non-normal. Customer edge device problem identification can include sending an internet control message protocol (ICMP) echo request to the CE device in response to the status of the connection being non-normal. Customer edge device problem identification can include receiving an ICMP echo response from the CE device. Customer edge device problem identification can also include identifying a simple network management protocol (SNMP) problem that is associated with the CE device based upon the receipt of the ICMP echo response.

Customer edge device problem identification

In an exemplary embodiment, a method for managing a network includes monitoring a network using an interior gateway protocol to detect change in the network, and determining effects of the detected network change on Multi Protocol Label Switching paths in the network. For example, the MPLS paths can be the same as IGP best paths. An exemplary embodiment includes managing a Multi Protocol Label Switching network by discovering edge routers in the Multi Protocol Label Switching network, determining possible combinations of Multi Protocol Label Switching path end points based on services provided within the network, selecting discovered edge routers for observation, based on the determined possible combinations, monitoring the selected edge routers, and determining status of Multi Protocol Label Switching paths in the network based on the monitoring.

MPLS VPN fault management using IGP monitoring system

Embodiments of the present invention provide a method of providing network information, comprising determining one or more pseudowires between nodes in a network; grouping the pseudowires, according to information associated with each pseudowire and one or more predetermined criteria, into one or more groups each representing a virtual private network (VPN); providing a graphical user interface (GUI) displaying information associated with at least one pseudowire participating in the virtual private network.

Method for providing network information

Presented is a method and system for determining network topology of a Virtual Private Network (VPN) in a Wide Area Network (WAN). The method includes obtaining a list of CE (customer edge) routers in a network, obtaining a list of prefixes advertised by each CE router, iterating, for each prefix, the list of prefixes advertised by all CE routers, verifying, in case a potential hub CE router already exists, whether the second CE router and the potential hub CE router are same, marking, in case a potential hub CE router does not exist, the second CE router as the potential hub CE router, and marking, if there exists a potential hub CE router that advertises every other prefix in the network, the potential hub CE router as hub site and other CE routers as spoke sites.

Method and system for discovering a pure hub-and-spoke topology

Presented is a method and system of determining network topology of a virtual private network in Multi Protocol Label Switching (MPLS) based Virtual Private Networks (MPLS/VPNs). The method includes obtaining VPN routing and forwarding (VRF) details of at least one virtual private network, determining any variations in network configuration and determining, from said network configuration variations, network topology of the at least one virtual private network.

Method and system for determining network topology of a virtual private network in multi protocol label switching (MPLS) based virtual private networks (VPNs)

A topology or connectivity of a computer network is discovered by identifying interface addresses in an address table of a node in the network, comparing prefixes of the interface addresses with prefixes in an address prefix table of the node, and associating subnets in the network with interfaces corresponding to the interface addresses, based on the comparing.

Method and apparatus for discovering topology information in a network

Presented is a method and system for deriving the path of a traffic engineering tunnel in a network using Multi Protocol Label Switching, MPLS, traffic engineering and a Management Information Base, MIB, describing managed objects of the network. The method comprises: obtaining node connectivity information from the MIB; obtaining network connectivity information from a network node manager; and deriving tunnel path information based on the node connectivity information and the network connectivity information.

Method and system for deriving tunnel path information in MPLS networks

In an embodiment, a network service provider (NSP) operates a provider network to provide VPN services to its customers. A VPN links various customer sites allowing customers to send data between these sites over the NSP network. Each site network includes a customer edge router (CE) while the provider network includes a plurality of provider edge routers (PEs) to communicate with the CEs. The PEs include virtual routing address (VRFs), and the PEs and CEs include interfaces (IFs). A database stores information related to the relationships between the network components (e.g., VPNs, PEs, CEs, VRFs, IFs, etc.), and a management software package (MSP) has access to the database. When a fault occurs, the MSP, based on collected information and information in the database, determines the impacted network components. Other features include classifying the seriousness of the network's faults and representing different faults by a color scheme.

Identifying VPN faults based on virtual routing address and edge interface relationship information

A method is disclosed for managing network nodes, such as the nodes of a network, which communicate via connectivity services of a service provider. An exemplary method includes discovering status and configuration information for each set of nodes grouped by the service provider; and assigning a name to each set of nodes.

Method and system for managing network nodes which communicate via connectivity services of a service provider

Methods and systems are disclosed for inferring address and subnet relationships. An exemplary method includes identifying a first address associated with a subnet; determining a length of a prefix part of the first address; determining a length of a prefix part of a second address; determining when a portion of the second address matches a portion of the first address; and determining when the lengths of the prefix parts of the first and second addresses are equal. A relationship between the second address and the subnet is inferred when the portion of the second address matches the portion of the first address and the lengths of the prefix parts of the first and second addresses are equal.

Method and apparatus for inferring address and subnet relationships

Network topology data or data indicating a topology of a network, is analyzed and refined by merging portions of the data and removing false data from the network topology data. For example, network topology data is processed by evaluating interface data, deleting erroneous data from the network topology data based on the evaluating, and merging data in the network topology data based on the evaluating.

Method and apparatus for processing network topology data

A method and system for maintaining persistence of graphical markups created within a collaboration environment that associates graphical markups with the camera position is presented. The collaboration tool provides utilities to allow saving the graphical markups to the user's local disk, saving the graphical markups into a PDM system (either locally or remotely), and saving the entire collaboration session including graphical markups, notes, action items, etc., When saved to persistent storage, all the camera positions and all graphical markups associated with them are stored in the markup file. The saved markups/session can later be reloaded from the user's local disk or a PDM system as appropriate. When a session is loaded into the collaboration session, all of the camera positions and associated graphical markups from the saved session are then accessible, allowing simple viewing of the results of the session, continuation-of-work, or asynchronous collaboration. After a markup file is loaded the contents are accessible to all the members of the current collaboration session.

Method and system for maintaining persistence of graphical markups in a collaborative graphical viewing system

A method and system for maintaining persistence of graphical markups created within a collaboration environment that associates graphical markups with the camera position is presented. The collaboration tool provides utilities to allow saving the graphical markups to the user's local disk, saving the graphical markups into a PDM system (either locally or remotely), and saving the entire collaboration session including graphical markups, notes, action items, etc. When saved to persistent storage, all the camera positions and all graphical markups associated with them are stored in the markup file. The saved markups/session can later be reloaded from the user's local disk or a PDM system as appropriate. When a session is loaded into the collaboration session, all of the camera positions and associated graphical markups from the saved session are then accessible, allowing simple viewing of the results of the session, continuation-of-work, or asynchronous collaboration. After a markup file is loaded the contents are accessible to all the members of the current collaboration session.

Growing community of inventors

Fort Collins, CO, United States of America

Swamy Jagannadha Mandavilli