Broadcom Corporation

Avago Technologies General IP (singapore) Pte. Ltd.

Avago Technologies International Sales Pte. Limited

Mitchell Gordon McGee

Ryan E Hirth

Glen Kramer

Mark David Griswold

Eliezer Weitz

Lawrence Drew Davis

Asaf Koren

Gal Sitton

Ifat Naaman

Yariv Aviram

Oren Issac Wolach

Ira Joffe

Assaf Amitai

Daniel Pasternak

Hilla Ben Yaacov

Yoram Gorsetman

Koby Harel

Yanai Pomeranz

Tal Baum-Mizrachi

The present disclosure is directed to a network processor for processing high volumes of traffic provided by todays access networks at (or near) wireline speeds. The network process can be implemented within a residential gateway to perform, among other functions, routing to deliver high speed data services (e.g., data services with rates up to 10 Gbit/s) from a wide area network (WAN) to end user devices in a local area network (LAN).

Network processors

Embodiments of the present disclosure provide efficient solutions for detecting and transmitting heartbeat frames at an optical line terminal (OLT) of an Ethernet passive optical network (EPON). The processing burden of a host CPU is reduced by shifting some of the processing responsibilities of the host CPU to an embedded CPU. An OAM capture FIFO buffer stores frames for later processing by the embedded CPU, and fields of an OAM vector register are changed whenever a heartbeat frame is detected for an LLID. Embedded CPU polls the OAM vector at a predetermined rate sufficient to maintain link status, so heartbeat messages are not missed even when the OAM capture FIFO buffer overflows. Additionally, an OAM generation buffer efficiently creates new heartbeat messages to be sent to ONUs for each supported LLID by modifying previously transmitted OAM frames with new information specific to the LLIDs.

OLT MAC module for efficiently processing OAM frames

The present disclosure is directed to a method and apparatus for maintaining sub-queues at an ONU and for maintaining a count of an amount of data stored in each sub-queue or a count of an amount of data associated with elements stored in each sub-queue. The sub-queues represent partitions in a first in, first out (FIFO) queue used by the ONU to buffer packets, or elements that are associated with packets, to be sent upstream. The sub-queues are coupled in series such that the output of a first sub-queue feeds the input of a second sub-queue, the output of the second sub-queue feeds the input of a third sub-queue, etc. Each sub-queue has a defined threshold that sets a maximum amount of packet data it can buffer or the elements in which it buffers can be associated with.

Ethernet passive optical network with report threshold calculations

Growing community of inventors

Santa Rosa, CA, United States of America

Mitchell Gordon McGee