System, device, and method for supporting cut-through paths...

Details System, device, and method for supporting cut-through paths... System, device, and method for supporting cut-through paths...

2006-10-24

2006-10-24

Pascal, Leslie (Department: 2613)

Optical communications

Transmitter and receiver system

Including alignment between transmitter and receiver

C398S162000, C398S140000, C398S057000, C370S254000

Reexamination Certificate

active

07127180

ABSTRACT:
A system, device, and method for supporting cut-through paths in an optical communication system involves obtaining hop count and quality of service information by an initiating device and using the hop count and quality of service information by the initiating device to make decisions relating to a cut-through path. The hop count and quality of service information is provided in a reply message that is sent by a terminating device and modified by intermediate devices between the initiating device and the terminating device. The terminating device sends the reply with a hop count equal to one and quality of service information for a first link (hop) toward the initiating device. Each intermediate device increments the hop count in the reply and adds quality of service information for a next link (hop) into the reply.

REFERENCES:
patent: 6252857 (2001-06-01), Fendick et al.
patent: 6912221 (2005-06-01), Zadikian et al.
patent: 6944675 (2005-09-01), Fujita
patent: 2005/0201380 (2005-09-01), Saleh et al.
Chandhok et al., “IP over Optical Networks: A Summary of Issues”; Jul. 2000; http://www.cse.ohio-state.edu/˜jain/ietf/ftp/draft-osu-ipo-mpls-issues-00.pdf.
Katz et al., “NBMA Next Hop Resolution Protocol (NHRP)”; May 1995; http://mirrors.isc.org/pub/www.watersprings.org/pub/id/draft-ietf-rolc-nhrp-04.txt.
RFC 2332, Luciani et al., Apr. 1998, http://www.faqs.org/rfcs/rfc2332.html.
Luciani, et. al., “NBMA Hop Resolution Protocol (NHRP)” Network Working Group Request for Comments: 2332 Category: Standards Track, Apr. 1998.

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