Filtering and forwarding frames within an optical network
AssigneeBroadcom Corporation
InventorsDolors Sala, John O. Limb, Ajay Chandra V. Gummalla
Life of this patent
Estimating the term…
Loading patent…
AssigneeBroadcom Corporation
InventorsDolors Sala, John O. Limb, Ajay Chandra V. Gummalla
Estimating the term…
An optical line terminal (OLT) monitors and controls communications with a plurality of optical nodes (ONs), such as optical network units (ONUs) and/or optical network terminators (ONTs), within a passive optical network (PON), such as, but not exclusively, an Ethernet-based passive optical node (EPON). A tagging mechanism is implemented to identify an origin ON that introduces a frame into the PON segment linking the origin ON with the OLT. The origin ON produces a PON tag to associate its identifier (ON_ID) to the frame. The PON tag facilitates filtering and forwarding operations, and enables the physical layer interface (PHY) to the PON segment to emulate a point-to-point and/or shared communications link. The PON tag allows a MAC control layer to create virtual ports to traffic incoming and outgoing optical signals, and supply the virtual ports to a forwarding entity for frame filtering and forwarding. The PON tag also allows an OLT and ON to track the origination and/or destination of a frame within the PON segment, and accept or reject the frame based on the contents of the PON tag.
A method for filtering and forwarding information in an optical network, comprising the steps of:
A method for processing information from a downstream path of an optical network, comprising the steps of:
A system for forwarding frames in an optical network, comprising:
An optical line terminal for managing the exchange of information within an optical network, comprising:
An optical network element for processing information from a downstream path of an optical network, comprising:
A method for transporting a frame within an optical network, comprising the steps of:
A computer data signal embodied in a carrier wave, comprising:
Dependencies are inferred from the claim text.