Patent · US Active

Half-duplex multicast distribution tree construction

US7843917B2 · kind B2 · utility

7Cited by

37References

23Claims

0Family size

Assignee

Cisco Technology, Inc. · US

Inventors

Frank Brockners · Cologne, DE
Ali Sajassi · San Ramon, US
Robert Goguen · Acton, US
Ijsbrand Wijnands · Leuven, BE

Key dates

Filing date	Nov 8, 2007
Grant date	Nov 30, 2010
Priority date	—
Expiry date	Dec 20, 2028

Classification

Technology area (CPC H)Electricity
CPC primaryH04L45/507
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

In one embodiment, a method includes sending upstream to a nearest neighbor node, by a Client Label Switched Router (LSR), a downstream label map message of a Server-Forwarding Equivalence Class type (S-FEC-DOWN). In response to the S-FEC-DOWN, a downstream forwarding state from the nearest neighbor node to the Client LSR is established. An upstream label map message of a Client-Forwarding Equivalence Class type (C-FEC UP) is received from the nearest neighbor node. An upstream forwarding state corresponding to the C-FEC UP is then established by the Client LSR.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.