Joint-layer restoration in packet-over-optical networks

Details Joint-layer restoration in packet-over-optical networks Joint-layer restoration in packet-over-optical networks

2008-03-18

2008-03-18

Vanderpuye, Kenneth (Department: 2613)

Optical communications

Fault recovery

Wdm

C398S001000, C398S005000, C398S006000, C398S008000

Reexamination Certificate

active

10899496

ABSTRACT:
A joint “packet-optical” layer restoration mechanism protects against single, packet-layer router failures by managing network resources from both the packet layer and the optical transport layer in a synergistic manner. It reuses packet-layer router service-ports and/or transport-layer service wavelengths associated with optical switch-ports instead of reserving additional standby packet-layer router service-ports. It can reuse resources from primary paths that are unaffected by router failures and paths that exist for link-failure protection at the optical layer. Embodiments feature a modified node structure that includes both an IP router and a dynamically reconfigurable OXC, which dynamically establishes connectivity between IP-router ports and transport-layer optical fibers. The joint-layer router provides fine-granularity grooming at the IP layer and full-fledged wavelength networking via dynamic wavelength switching and/or wavelength translation at the optical layer. The latter can change the wavelength cross-connections on-demand to perform restoration or to modify the connectivity between IP routers in the network.

REFERENCES:
patent: 6463285 (2002-10-01), Davies et al.
patent: 6530032 (2003-03-01), Shew et al.
patent: 6708000 (2004-03-01), Nishi et al.
patent: 6970451 (2005-11-01), Greenberg et al.
patent: 7020078 (2006-03-01), Maeno
patent: 7188280 (2007-03-01), Shinomiya et al.
patent: 2002/0030864 (2002-03-01), Chaudhuri et al.
patent: 2002/0035640 (2002-03-01), Greenberg et al.
patent: 2002/0063916 (2002-05-01), Chiu et al.
patent: 2004/0107382 (2004-06-01), Doverspike et al.
patent: 2004/0186701 (2004-09-01), Aubin et al.
patent: 2006/0126500 (2006-06-01), Wakai et al.
patent: 2006/0257143 (2006-11-01), Cavazzoni et al.
patent: 2007/0041316 (2007-02-01), Chaudhuri
C. Chigan, G. Atkinson, R. Nagarajan, T. Robertazzi. “Mathematical Programming for Joint Protection/Restoration of IP over DWDM Networks”. 2002 Conference on Information Sciences and Systems, Princeton University, Mar. 20-22, 2002.

Affiliated with

Also associated with

Rating

Joint-layer restoration in packet-over-optical networks does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Joint-layer restoration in packet-over-optical networks, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Joint-layer restoration in packet-over-optical networks will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3926391