Abstract

This paper presents a new technology for constructing IP over photonic systems. An IP with multiprotocol label switching (MPLS) over wavelength division multiplexing (WDM)-based broad-band IP network architecture and protocol is proposed and analyzed in this paper, which supports variable-length IP-like optical packet label switching and optical virtual path routing. This system tries to merge into one layer the functionalities of the wavelength switching,SONET mux/demux, and IP routing, and is sometimes known as the concept of optical MPLS. The label banding, forwarding/switching process, and node architecture of the proposed network are discussed and studied. A unique as well as important function of a lambda/label edge router (LER) is a flow assembly device that can encompass MPLS' forward equivalence classes, label stacking, and label switching path aggregation function. At the same time, a particular function of the core label switching router is wavelength merging. A fiber delay line is used to delay the data stream in order to process the label information and resolve contention. Transmission bit error rate measurements of the baseband data stream and back-to-back is also demonstrated to show its feasibility.

© 2001 IEEE

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J. Lightwave Technol. (1)

Other (18)

T. Li, "MPLS and the evolving internet architecture", IEEE Commun. Mag., vol. 37, no. 12, pp. 38-42, Dec. 1999.

E. C. Rosen, A. Viswanathan and R. Callon, "Multiprotocol label switching architecture", Aug. 27, 1999.

R. Callon, P. Doolan and N. Feldman et al., "A framework for MPLS", IETF draft-ietf-mpls-framework-05.txt, Sept. 22, 1999.

D. O. Awduche and J. Malcolm et al., "Requirements for traffic engineering over MPLS", IETF draft-ietf-mpls-traffic-eng-01.txt, Nov. 1999.

P. Cadro, A. Fravey and C. Guillemot, "Performance evaluation of the KEOPS wavelength routing optical packet switch", ETT, vol. 11, no. 1, pp. 125-132, Jan.-Feb. 2000.

S. Yao and B. Mukherjee, "Advances in photonic packet switching: An overview", IEEE Commun. Mag., vol. 38, pp. 84-93, Feb. 2000.

C. Guillemot et al., "Transparent optical packet switching: The European ACTS KEOPS project approach", IEEE J. Lightwave Technol., vol. 16, Dec. 1998.

D. Awduche et al., "Multi-protocol lambda switching: Combining MPLS traffic engineering control with optical cross-connects", IETF draft networking group, draft-awduche-mpls-te-optical-01.txt., Nov. 1999.

C. Qiao and M. Yoo, "Optical burst switching (OBS): A new paradigm for and optical internet", J. High Speed Networks (Special Issue on Optical Networking) , vol. 8, no. 1, pp. 69-84, Jan. 1999.

M. Yoo and C. Qiao, "Just-enough-time (JET): A high speed protocol for bursty traffic in optical networks", in Dig. IEEE/LEOS Summer Topical Meetings Technologies for a Global Info. Infrastructure, Aug. 1997, pp. 26-27.

F. Callegati, M. Casoni and C. Raffaelli et al., "Performance of a TCP/IP backbone based on optical packet switching", ETT, vol. 10, no. 3, pp. 213-225, May-June 1999.

P. E. Green Jr., "Optical networking update", IEEE J. Select. Areas Commun., vol. 14, pp. 764-779, June 1996 .

J. Bannister et al., "How many wavelengths do we really need in a internet optical backbone?", in Proc. Pfhn'99, Salem, MA, Aug. 1999, pp. 44-60.

D. K. Hunter and M. H. M. Nizam et al., "WASPNET: A wavelength switched packet network", IEEE Commun. Mag., vol. 38, pp. 120-129, Mar. 1999.

D. O. Awduche, "MPLS and traffic engineering in IP networks", IEEE Commun. Mag., pp. 42-47, Dec. 1999.

P. Bonenfant et al., "IP over WDM: The missing link", White paper, Optical networking group, Lucent Technologies, http:// www.lucent-optical.com, 1999.

J. Diao and P. L. Chu, "Analysis of partially shared buffering for WDM optical packet switching", J. Lightwave Technology, vol. 17, pp. 2461-2469, Dec. 1999.

C. R. Giles and M. Spector, "The wavelength add/drop multiplexer for lightwave communication networks", Bell Labs Tech. J., pp. 207-228, Jan.-March 1999.

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