Question

a. For the below shown topology, each link represents two fibers (one pair) for transmission in each direction. You will notice that there are four nodes and two hubs. Consider the following requested links by design and give the wavelength assignment for the different links taking into account that you need to minimize the number of wavelengths consumed: 1->3, 1->4, 2->3, 2->4, 3->1, 3->2, 4->1, 4->2 and 4->3. b. Now consider the following unidirectional ring where each directed link represents one fiber with traffic traveling clockwise. Specify the minimum number of required wavelengths in order to achieve the matrix of communications provided. j-1 2 3 4 5 6 i=1 0 0 1 0 0 0 2 0 0 0 1 0 0 3 0 0 0 0 2 0 [r<sup>ij</sup>] = 4 0 0 0 0 0 1 5 0 2 0 0 0 0 6 0 0 0 0 0 0 traffic matrix: entry (i, j) is traffic from node i to node j.

          a. For the below shown topology, each link represents two fibers (one pair) for
transmission in each direction. You will notice that there are four nodes and two
hubs. Consider the following requested links by design and give the wavelength
assignment for the different links taking into account that you need to minimize
the number of wavelengths consumed: 1->3, 1->4, 2->3, 2->4, 3->1, 3->2, 4->1,
4->2 and 4->3.
b. Now consider the following unidirectional ring where each directed link
represents one fiber with traffic traveling clockwise. Specify the minimum
number of required wavelengths in order to achieve the matrix of
communications provided.
j-1 2 3 4 5 6
i=1 0 0 1 0 0 0
2 0 0 0 1 0 0
3 0 0 0 0 2 0
[r<sup>ij</sup>] = 4 0 0 0 0 0 1
5 0 2 0 0 0 0
6 0 0 0 0 0 0
traffic matrix: entry (i, j) is
traffic from node i to node j.

a. For the below shown topology, each link represents two fibers (one pair) for
transmission in each direction. You will notice that there are four nodes and two
hubs. Consider the following requested links by design and give the wavelength
assignment for the different links taking into account that you need to minimize
the number of wavelengths consumed: 1->3, 1->4, 2->3, 2->4, 3->1, 3->2, 4->1,
4->2 and 4->3.
b. Now consider the following unidirectional ring where each directed link
represents one fiber with traffic traveling clockwise. Specify the minimum
number of required wavelengths in order to achieve the matrix of
communications provided.
j-1 2 3 4 5 6
i=1 0 0 1 0 0 0
2 0 0 0 1 0 0
3 0 0 0 0 2 0
[r<sup>ij</sup>] = 4 0 0 0 0 0 1
5 0 2 0 0 0 0
6 0 0 0 0 0 0
traffic matrix: entry (i, j) is
traffic from node i to node j.

Added by Amanda Q.

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