Nokia Solutions and Networks Oy

Alcatel Lucent

Limin Wang

Sarit Mukherjee

Hyunseok Chang

Muralidharan Sampath Kodialam

Fang Hao

T V Lakshman

Sunghwan Ihm

Walid Abdelrahman

A CPU implements a virtual network function (VNF) associated with flow processing and can offload at least some of the flow processing to a hardware accelerator. A module (e.g., TOR switch), external to the software-based processor and the hardware accelerator, examines packet flows and determines (e.g., using a top-K elephant-flow-detection algorithm) which ones are more suitable for offloading from the software-based processor to the hardware accelerator than others. The external module communicates the relative suitability for offloading to the CPU using packet tags or out-of-band messaging, and the CPU uses the relative suitability to determine which flows to offload or onload. In some implementations, the CPU can instruct the external module to change the value of K used in the algorithm.

In-network decision for end-server-based network function acceleration

An end-to-end telemetry system for a Remote Direct Memory Access (RDMA) communication network having multiple end-servers. The system includes an RDMA tracer for each end-server, one or more programmable data planes, and a telemetry collector. Each RDMA tracer extracts host-level telemetry information for one or more RDMA sessions associated with the corresponding end-server. Each programmable data plane extracts network-level telemetry information for one or more RDMA sessions associated with the programmable data plane. The telemetry collector (i) receives the host-level telemetry information from the RDMA tracers and the network-level telemetry information from the one or more programmable data planes and (ii) generates telemetry reports based on the host-level and network-level telemetry information. In some implementations, the system enables real-time monitoring of RDMA traffic at the RDMA protocol level granularity across all RDMA-enabled workloads for different use cases.

End-to-end RDMA telemetry system

Packet-processing circuitry including one or more flow caches whose contents are managed using a cache-entry replacement policy that is implemented based on one or more updatable counters maintained for each of the cache entries. In an example embodiment, the implemented policy enables the flow cache to effectively catch and keep elephant flows by giving to the caught elephant flows appropriate preference in terms of the cache dwell time, which can beneficially improve the overall cache-hit ratio and/or packet-processing throughput. Some embodiments can be used to implement an Open Virtual Switch (OVS). Some embodiments are advantageously capable of implementing the cache-entry replacement policy with very limited additional memory allocation.

Flow cache management

A method, system and apparatus for a assigning keywords to a web page using keyword data from the web page itself, web pages having links pointing to the web page, and web pages pointed to by a link in the web page, wherein the keyword data from the multiple web pages is processed to provide a relevant set of keyword data for the web page.

Keyword assignment to a web page

Embodiments of the present invention are methods for selecting, out of a lineup of IPTV channels, a subset of channels for caching. The methods take into account viewers' tendency to walk through the channels that lie between their current channel and their desired channel if that walking distance is short, and, alternatively, viewers' tendency to jump to a distant channel. Accordingly, embodiments of the present invention include any channel selection method which selects for caching any number of channels less than the entire lineup, and where at least two of those channels form a segment of adjacent channels. Other embodiments include methods which rely upon specific extrinsic data, e.g., IGMP and EPG information, for selecting a subset of channels to be cached.

Growing community of inventors

Plainsboro, NJ, United States of America

Limin Wang