Cisco Technology, Inc.

Hewlett Packard Enterprise Development LP

Raja Rangarajan

Manjunath Jagannatharao

Rajagopalan Kothandaraman

Sajunair Madhavan Nair

Snigdhendu Mukhopadhyay

Piyush Agarwal

Cetin Seren

Joseph Baniqued

Senthil Kumar V S

Saju Nair

Chirag Vaidya

Toni Liu

Example implementations relate to configuring a managed device. For example, configuration of a managed device may be performed by a services controller. The services controller may comprise a processing resource and a memory resource storing machine readable instructions to cause the processing resource to perform a number of actions. For instance, the services controller may manage configuration of a network using a hierarchical configuration model. The services controller may define a plurality of configuration elements for each of a plurality of managed devices in the hierarchical configuration model, where configuration elements shared among the plurality of managed devices are assigned a same setting from the services controller, and the configuration elements assigned by the services controller are customizable by each of the plurality of managed devices.

Configuration of a managed device

Methods and apparatus are disclosed for handling transient anomalies in a communications or computer device or system, such an inverse multiplexing for ATM ('IMA') device. Such transient anomalies may include out of IMA frame ('OIF') anomalies. In one implementation, cells comprising a stream of packets are received over multiple links along with indications of OIF conditions for these links. During a period of an inactive OIF condition on a link, cells are received over the link and placed in a buffer at a next location. After an OIF condition is detected, cells are ignored and a write process waits until the OIF condition is no longer active. At which point, a buffer position is determined to place the next valid cell. Typically, this cell should be placed in the same buffer position as it would have been if there had never been an active OIF condition.

Method and apparatus for handling out of inverse multiplexing for asynchronous transfer mode frame error conditions

Data communication system is provided that comprises a plurality of switches which each comprise a respective controller. Ports on the switch are connected to any one of a multiplicity of far-end devices. Physical media is used to connect each port to a far-end device. Various physical media may be routed through a common binder which can create electromagnetic interference problems. Each port controller is operable to calculate a unique preamble value to be assigned to each port within the switch. The unique preamble value is calculated using a linear feedback shift register function which can be implemented using convenient matrix multiplication operations on seed values stored within the port controllers.

System and method for creating and using unique packet preambles for data communication

A method and system for managing inverse multiplexing over ATM is disclosed. In one embodiment, a method for use in a digital communications network, comprises monitoring a plurality of links to determine state changes of the links. An IMA-ID check is enforced when an insufficient links state is reached. The IMA-ID check is relaxed when all the links are in an error state. An IMA-ID check is re-enforced when at least one link of the plurality of links recovers from an error state.

Method and system for managing inverse multiplexing over ATM

A method and system for graceful slowlink deletion and subsequent fast link addition in an inverse multiplexing over asynchronous transfer mode (IMA) group are disclosed in which data is received on one or more data links. The received data is written into a buffer for each data link. The data in the buffer for each data link is read faster than the data is written into the buffer. By reading data from a DCB faster than the data is written into the DCB, the differential delay caused by a slow link deletion can be reduced. As such, a fast link, which otherwise could not be added to an IMA group because of the slow link deletion, can now be added without writing over unread data.

Method and system for graceful slowlink deletion and subsequent fast link addition in an IMA group

A system and method for processing control cells to prevent event missequencing and data loss are described. At least one control unit is processed to retrieve communication information related to data received along one or more communication links in a network. The at least one control unit is then stored in one or buffers. Finally, the at least one control unit is further processed to retrieve link information related to the one or more communication links.

System and method for processing control cells to prevent event missequencing and data loss in IMA groups

Methods and apparatus are disclosed for handling transient anomalies in a communications or computer device or system, such an inverse multiplexing for ATM (&ldquo;IMA&rdquo;) device. Such transient anomalies may include out of IMA frame (&ldquo;OIF&rdquo;) anomalies. In one implementation, cells comprising a stream of packets are received over multiple links along with indications of OIF conditions for these links. During a period of an inactive OIF condition on a link, cells are received over the link and placed in a buffer at a next location. After an OIF condition is detected, cells are ignored and a write process waits until the OIF condition is no longer active. At which point, a buffer position is determined to place the next valid cell. This cell should be placed in the same buffer position as it would have been if there had never been an active OIF condition.

Growing community of inventors

Milpitas, CA, United States of America

Raja Rangarajan