Cisco Segmented Generalized Multiprotocol Label Switching
by Cisco Systems
Published 2006; Posted May 2006


A primary component of the Cisco Systems IP over Dense Wavelength-Division Multiplexing (IPoDWDM) solution for the IP Next- Generation Network (IP NGN) is the simplification of end-to-end control between IP and DWDM networks. To alleviate high operational expenses (OpEx), increase speed for carrier service activations, and eliminate cumbersome and disparate manual provisioning methods at the transport layer, Cisco has introduced a new cost-effective and efficient solution based on Generalized Multiprotocol Label Switching (GMPLS). This solution enables both optical and IP devices to dynamically find, identify, and provision optimal paths based on user traffic requirements. Called the Segmentation model of GMPLS (S-GMPLS), this new GMPLS model is a hybrid of current approaches that overcomes several daunting obstacles by allowing both IP and optical networks to maintain their existing segmented administration environments. S-GMPLS allows providers to keep the topology of the IP routing domain isolated from the topology of the optical domains, providing a new way to deploy and realize the benefits of GMPLS while respecting the boundaries of these different organizational boundaries or domains.


This paper presents details of S-GMPLS, an innovative technology from Cisco Systems developed for service providers in their optical networks that utilizes the power of IP/GMPLS control protocols for autoconfiguration of optical wavelengths and separates IP routing and optical network domains to respect those diverse organizational boundaries.



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