Abstract

Virtual topology of WDM optical networks is often designed for some specific traffic matrix to get the best network performance. When traffic demand imposed on WDM optical networks changes, the network performance may degrade and even become unacceptable. So virtual topology need to be reconfigured. In previous works, virtual topology is reconfigured to achieve the best network performance, in which a large number of lightpaths need to be set up or torn down. In this paper, we try to get a tradeoff between the network performance and traffic disruption (or implementing cost). The problem of virtual topologyreconfiguration for changing traffic patterns is formulated as an optimization problem and a mixed integer linear programming (MILP) algorithm is presented. Numerical results show that a large cost reduction of reconfiguration can be achieved at the expense of network performance.

© 2005 Chinese Optics Letters

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  2. B. Ramamurthy and A. Ramakrishnan, in Proceeding of Globecom 2000, 1269 (2000).
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  7. R. M. Krishnaswamy and K. N. Sivarajan, IEEE/ACM Transactions on Networking 9, 186 (2001).

2001 (1)

R. M. Krishnaswamy and K. N. Sivarajan, IEEE/ACM Transactions on Networking 9, 186 (2001).

2000 (3)

D. Banerjee and B. Mukherjee, IEEE/ACM Transactions on Networking 8, 598 (2000).

B. Ramamurthy and A. Ramakrishnan, in Proceeding of Globecom 2000, 1269 (2000).

Narula-Tam and E. Modiano, IEEE Journal on Selected Areas in Communications, 18, 1972 (2000).

1996 (1)

R. Ramaswami and K. N. Sivarajan, IEEE Journal on Selected Areas in Communications 14, 840 (1996).

Banerjee, D.

D. Banerjee and B. Mukherjee, IEEE/ACM Transactions on Networking 8, 598 (2000).

Krishnaswamy, R. M.

R. M. Krishnaswamy and K. N. Sivarajan, IEEE/ACM Transactions on Networking 9, 186 (2001).

Modiano, la-Tam

Narula-Tam and E. Modiano, IEEE Journal on Selected Areas in Communications, 18, 1972 (2000).

Mukherjee, B.

D. Banerjee and B. Mukherjee, IEEE/ACM Transactions on Networking 8, 598 (2000).

Ramakrishnan, A.

B. Ramamurthy and A. Ramakrishnan, in Proceeding of Globecom 2000, 1269 (2000).

Ramamurthy, B.

B. Ramamurthy and A. Ramakrishnan, in Proceeding of Globecom 2000, 1269 (2000).

Ramaswami, R.

R. Ramaswami and K. N. Sivarajan, IEEE Journal on Selected Areas in Communications 14, 840 (1996).

Sivarajan, K. N.

R. M. Krishnaswamy and K. N. Sivarajan, IEEE/ACM Transactions on Networking 9, 186 (2001).

R. Ramaswami and K. N. Sivarajan, IEEE Journal on Selected Areas in Communications 14, 840 (1996).

18 (1)

Narula-Tam and E. Modiano, IEEE Journal on Selected Areas in Communications, 18, 1972 (2000).

IEEE Journal on Selected Areas in Communications (1)

R. Ramaswami and K. N. Sivarajan, IEEE Journal on Selected Areas in Communications 14, 840 (1996).

IEEE/ACM Transactions on Networking (2)

R. M. Krishnaswamy and K. N. Sivarajan, IEEE/ACM Transactions on Networking 9, 186 (2001).

D. Banerjee and B. Mukherjee, IEEE/ACM Transactions on Networking 8, 598 (2000).

in Proceeding of Globecom (1)

B. Ramamurthy and A. Ramakrishnan, in Proceeding of Globecom 2000, 1269 (2000).

Other (2)

N. Sceeenath, C. S. R. Murthy, B. H. Gurucharan, and G. Mohun, Optical Networks Magazine (May/June, 2001) 58 (2001).

A. Gencata, L. Sahasrabuddhe, and B. Mukherjee, in Proceedings of OFC 2002, 2002.

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