Optical Networks: A Practical Perspective, 3rd Edition Chapter

Optical Networks: A Practical Perspective, 3rd Edition Chapter

Optical Networks: A Practical Perspective, 3rd Edition Chapter 8 Control and Management Copyright 2010, Elsevier Inc. All rights Reserved 1 Chapter 8 Figure 8.1

Figure 8.1 Overview of network management in a typical optical network, showing the network elements (OLTs, OADMs, OXCs, amplifiers), the management systems, and the associated interfaces. Copyright 2010, Elsevier Inc. All rights Reserved 2 Chapter 8

Figure 8.2 Figure 8.2 Layers within OTN. The optical layers are the optical channel layer (OCh), optical multiplex section (OMS) layer, and the optical transmission section (OTS) layer. The electronic layers are the optical channel data unit (ODU) layer and the optical channel transport unit (OTU). Copyright 2010, Elsevier Inc. All rights Reserved 3

Chapter 8 Figure 8.3 Figure 8.3 Interoperability between WDM systems from different vendors, showing all-optical subnets from different vendors interconnected through transponder/ regenerators. Copyright 2010, Elsevier Inc. All rights Reserved 4

Chapter 8 Figure 8.4 Figure 8.4 Forward and backward defect indicator signals and their use in a network. Copyright 2010, Elsevier Inc. All rights Reserved 5 Chapter 8

Figure 8.5 Figure 8.5 Using hierarchical defect indicator signals in a network. Defect indicators are used at the OTS, OMS, OCh, and ODU sublayers. Copyright 2010, Elsevier Inc. All rights Reserved 6 Chapter 8

Figure 8.6 Figure 8.6 Different types of optical layer overhead techniques. The OSC is used hop by hop. The pilot tone is inserted by a transmitter and can be monitored at elements in an all-optical subnet until it is terminated at a receiver. The rate-preserving overhead is used end to end across multiple subnets through intermediate regenerators. Copyright 2010, Elsevier Inc. All rights Reserved

7 Chapter 8 Figure 8.7 Figure 8.7 The optical supervisory channel, which is terminated at each amplifier location. Copyright 2010, Elsevier Inc. All rights Reserved 8

Chapter 8 Figure 8.8 Figure 8.8 Usage of wavelengths in the network. Traffic is carried on the O (original), S (short), C (conventional), or L (long) wavelength bands. Raman pumps, if used, are located about 80 100 nm below the signal. Copyright 2010, Elsevier Inc. All rights Reserved

9 Chapter 8 Figure 8.9 Figure 8.9 Different control plane models for interconnecting client layers with the optical layer. (a) Overlay model, (b) overlay+ model, (c) peer model, and (d) augmented model. Copyright 2010, Elsevier Inc. All rights Reserved

10 Chapter 8 Figure 8.10 Figure 8.10 Different types of interfaces between a WDM optical network and its clients. Copyright 2010, Elsevier Inc. All rights Reserved 11

Chapter 8 Figure 8.11 Figure 8.11 Open fiber control protocol in the Fibre Channel standard. Copyright 2010, Elsevier Inc. All rights Reserved 12

Chapter 8 Figure 8.12 Figure 8.12 State machine run by each node for the open fiber control protocol in the Fibre Channel standard. Copyright 2010, Elsevier Inc. All rights Reserved 13 Chapter 8

Figure 8.13 Figure 8.13 A combined SONET/WDM optical network for Problem 8.2. Copyright 2010, Elsevier Inc. All rights Reserved 14 Chapter 8

Figure 8.14 Figure 8.14 Example for Problem 8.3. Copyright 2010, Elsevier Inc. All rights Reserved 15

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