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Metro Ethernet by Sam Halabi

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Chapter 8. GMPLS Architecture

This chapter covers the following topics:

Optical networks present some added challenges that do not normally exist in packet-switched networks (PSNs) and hence cannot be fully addressed by the traditional MPLS schemes. Here are a few examples of these challenges:

  • Optical/TDM bandwidth allocation is done in discrete amounts, whereas in PSNs, bandwidth can be allocated from a continuous spectrum.

  • The number of links in an optical network can be orders of magnitude larger than in a traditional network, due to ...

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