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Metro and core networks have been traditionally designed and managed by different departments within network operators. Moreover, even in the cases where both metro and core networks are based on the same technology, e.g. MPLS, services need to be provided separately per domain. This historic separation is now being questioned in light of the potential cost efficiency and lower time-to-market that...
Multi-layer integration is an important trend in the telecom industry as a cost-efficient alternative. From an incremental CapEx analysis, we aim to quantify the maximum cost savings that could be achieved by such integration.
We have implemented a multi-layer PCE and compared performance of various algorithms using either one integrated, or two separate PCEs in each layer. Multi-layer integration reduces blocking by 13,91%, but increases computation time by 49,24%.
The ever-increasing Internet Protocol (IP) traffic volume has finally brought to light the high inefficiency of current wavelength-routed over rigid-grid optical networks in matching the client layer requirements. Such an issue results in the deployment of large-size, expensive, and power-consuming IP/Multi-Protocol Label Switching (MPLS) layers to perform the required grooming/aggregation functionality...
This paper shows the CAPEX benefits of an IP over reconfigurable WDM network architecture, which combines most of the benefits of IP Offloading theory while entailing a minimal impact in current IP core networks design.
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