User-constrained optical route flooding system and method

Details User-constrained optical route flooding system and method User-constrained optical route flooding system and method

2006-04-11

2006-04-11

Sedighian, M. R. (Department: 2633)

Optical communications

Multiplex

Optical switching

C398S050000, C398S051000, C398S049000, C398S057000, C370S230000, C370S231000, C370S235000, C370S401000

Reexamination Certificate

active

07027731

ABSTRACT:
A technique for providing user domain constrained optical route flooding for multiple optical networking service modes is disclosed. In one embodiment, the technique is realized by a method for routing information over an optical network having multiple optical service models. The method comprises receiving a link state advertisement including an incoming optical interface descriptor at an optical switch, checking an outgoing optical interface descriptor for an outgoing link; flooding the link state advertisement over the outgoing link if the outgoing optical interface descriptor has a first pre-defined value, blocking the link state advertisement if the outgoing optical interface descriptor has a second pre-defined value, and comparing the ingoing and outgoing optical interface descriptors if the outgoing optical interface descriptor has neither the first pre-defined value nor the second predefined value and flooding the link state advertisement only if the incoming user group identifier matches the outgoing optical interface descriptor.

REFERENCES:
patent: 2003/0026212 (2003-02-01), Martin
“Generalized multiprotocol label switching: an overview of routing and management enhancements”; Banerjee et al., IEEE Communications Magazine, vol. 39, Issue 1, Jan. 2001, pp. 144-150.
“User Network Interface (UNI) 1.0 Signaling Specification”, OIF2000.125.3, Dec. 2000, http://www.cse.ohio-state.edu/˜jain/oif/ftp/oif2000.125.3.pdf.
Pendarakis et al., “Routing Information Exchange in Optical Networks”, Oct. 28, 2000, http://www.watersprings.org/pub/id/draft-prs-optical-routing-00.txt.
Moy, “OSPF Version 2”, Apr. 1998, http://www.faqs.org/ftp/rfc/pdf/rfc2328.txt.pdf.

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