Cabletron Systems, Inc.

Other

Aprisma Management Technologies, Inc.

Walter P Scott

Eric S Rustici

Roger H Dev

Lundy M Lewis

Steve Sycamore

Rajiv Malik

Prasan Kaikini

Suzanne Thebaut

Eric W Gray

Dwayne S Wiggin

Dale H Emery

Ajay Aggarwal

Oliver C Ibe

Howard M Brown

Todd Wohlers

Felix W Mick

Wallace E Matthews

Andrew Haskins

David Bucciero

Method and apparatus for determining an enforceable policy applicable to one or more network devices. The method includes attaching one or more rule elements to one or more domain elements to create policies, the domain elements representing network devices and groups of network devices, and the rule elements defining actions, a method for determining whether a conflict exists between the polices, and a method for resolving the conflicts to produce one or more enforceable policies.

Policy management and conflict resolution in computer networks

A network management system includes a user interface, a virtual network and a device communication manager. The virtual network includes models which represent network entities and model relations which represent relations between network entities. Each model includes network data relating to a corresponding network entity and one or more inference handlers for processing the network data to provide user information. The system performs a fault isolation technique wherein the fault status of a network device is suppressed when it is determined that the device is not defective. User displays include hierarchical location views and topological views of the network configuration. Network devices are represented on the displays by multifunction icons which permit the user to select additional displays showing detailed information regarding different aspects of the corresponding network device.

Network management system using model-based intelligence

Apparatus and method for monitoring parameters that govern the operational characteristics of a network device, including the use of templates for generating configuration records of network devices of a selected model type. A database of models is provided, each model representing an associated network device and including attribute values for the parameters of the associated network device. Templates are used to screen a model in order to retrieve values for each of the attributes and create a configuration record. The configuration records may be stored in the configuration manager or other storage device, and/or transferred to the pre-existing model database for use by a network management system in reconfiguring the associated network devices. Additionally, a method and apparatus is provided that defines network groups, defines network policies for groups, determines conflicts, and resolves conflicts among groups and devices. This system for configuration management is less time consuming, expensive, and error prone than prior systems.

Method and apparatus for defining and enforcing policies for configuration management in communications networks

Method and apparatus for defining and enforcing policies for

Method and apparatus for determining a communications path between a source and a destination in an Internet Protocol (IP) network. The method determines a path list of next-hop routers between the source and destination by selecting between a Simple Network Management Protocol (SNMP) query of a current router on the path, and by sending a User Datagram Protocol (UDP) probe packet having a destination field with a destination IP address and a Time-to-Live (TTL) field with a value of one greater than the number of hops to the current router. The steps are iterated until the next router is determined to be the destination. Preferably, the UDP probe packets are loose-source routed through the source. In addition, a topology information database may be accessed to resolve an unknown router, and/or resolve intrarouter devices on the path.

Method and apparatus for determining a communications path between two

Network management system using interconnected hierarchies to represent

A network management system includes a user interface, a virtual network and a device communication manager. The virtual network includes models which represent network entities and model relations which represent relations between network entities. Each model includes network data relating to a corresponding network device and one or more inference handlers for processing the network data to provide user information. The system performs a fault isolation technique wherein the fault status of a network device is suppressed when it is determined that the device is not defective. User displays include hierarchical location views and topological views of the network configuration. Network devices are represented on the displays by multifunction icons which permit the user to select additional displays showing detailed information regarding different aspects of the corresponding network device.

Network management system using multifunction icons for information

Medical instrument for implantation of radioactive seeds in a body, the instrument including an elongated support rod and an elongated stylet rod spaced apart from and parallel to the support rod, and being held in that relationship by a stop block and a slide block spaced apart from each other and longitudinally slidable with respect to both the support rod and the stylet rod. The stop block is attached to the support rod and the slide block is clampable to each of the support rod and the stylet rod. A seed cartridge with transverse spaced passageways and a central longitudinal through bore receives, stores, and discharges a plug of spaced radio-active seeds by the stylet rod through a connectible hollow elongated implantation needle through which the plug may be implanted in body tissue.

Medical seed implantation instrument

An injector for implanting materials comprising a hollow tubular sheath with a sharpened point suitable for injecting into human tissue and a slotted needle slidably and rotatably mounted inside said sheath, the sheath being retractable to expose any portion or all of the slotted needle, and the needle being rotatable within the sheath. This device is employed for implanting radioactive seeds in human tissue for treatment thereof.

Medical implantation device

Growing community of inventors

Salem, NH, United States of America

Walter P Scott