By Hussein T. Mouftah
ISBN-10: 1402071965
ISBN-13: 9781402071966
Optical networks have moved from laboratory settings and theoretical learn to real-world deployment and service-oriented explorations. New applied sciences comparable to Ethernet PON, site visitors grooming, nearby and metropolitan community architectures and optical packet switching are being explored, and the panorama is regularly and quickly evolving. a number of the very important matters regarding those new applied sciences contain the architectural, protocol, and function comparable matters. This publication addresses a lot of those concerns and provides a birds eye view of a few of the extra promising applied sciences. Researchers and people pursuing complicated levels during this box can be in a position to see the place development is being made and new applied sciences are rising.
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Additional info for Optical Networks: Architecture and Survivability
Example text
As a result, the only OEO ports used are those at the source (access) nodes for add/drop purpose; the remaining paths are completely in the optical domain. If D 2 UNI/GMPLS Example An example architecture for a network element which supports UNI / GMPLS is described in this section. At present, UNI / GMPLS is a developing technology with continuously evolving specifications, and illustrates an application which would particularly benefit from a flexible software architecture which supports frequent protocol updates. GMPLS networks support three distinct functionalities, namely, ingress LER processing, LSR switching and egress LER processing. 6. A brief discussion on the functionality of these data plane blocks is provided below. In total, these M/k wavebands use (M/k)((M+2G+k+2) additional optical ports and release (M/k)G(M-k+2) OEO ports. Since k=G/L, the reduction of number of ports is To compute the aggregation benefit, the reduction R is divided by the default ports count D. 6 shows the behavior of aggregation benefit A for various G and L (for M=20). As granularity G increases to the aggregation benefit first increases and then falls off. The optimal granularity slowly increases (as with the load L. It also slowly increases (as with the size (equal to 2M+1) of the ring.