OTN – Lesson 12 – Detailed Discussion of SNC/I Monitoring (Protection Switching)

This blog post presents a video that describes (in detail) SNC/I (Subnetwork Circuit – Inherent) Monitoring for Protection Switching.

Lesson 12 – Video 4 – Detailed Discussion of SNC/I (Subnetwork Circuit – Inherent) Monitoring for Protection Switching

This blog post contains a video that presents a detailed discussion of SNC/I Monitoring, both at the OTU and ODU layers.

In particular, this video will discuss the following topics:

How to perform SNC/I Monitoring at the OTU Layer
- What Circuitry (Atomic Functions) that we should use
- What defects to monitor
- Which is the Normal Traffic Signal when doing SNC/I Monitoring at the OTU Layer.
- What happens when we declare an OTU Layer Service-Affecting defect (dLOS, dLOF, dLOM, dLOL, dLOFLOM, dLOR, dAIS, and dTIM)?
- What happens when we declare the SM-dDEG (OTU-layer Signal Degrade) defect?
- How does protection-switching work?
How to perform SNC/I Monitoring at the ODU Layer
- What Circuitry (Atomic Functions) that we should use
- What defects to monitor
- Which is the Normal Traffic Signal when doing SNC/I Monitoring at the ODU Layer.
- What happens when we declare an ODUk Server-Layer service-affecting defects (such as dAIS, dOCI, dLCK, dTIM, dLOOMFI, and dPLM)?
- What happens when we declare ODUj Tributary-Layer service-affecting defects (such as dLOFLOM and dMSIM)
- What happens when we declare the PM-dDEG (ODU-layer Signal Degrade) defect?
- How does protection-switching work?

Check Out the Video Below

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OTN – Lesson 10 – Video 5M – Conclusion of the ODUkP/ODUj-21_A_Sk Function

This post presents the 5th of the 6 Videos that covers training on the Peformance Monitoring of the ODUk Layer (for Multiplexed Applications). This post focuses on the Sink Direction ODU-Layer Atomic Functions.

OTN – Lesson 10 – Video 5M – Conclusion of the ODUkP/ODUj-21_A_Sk Atomic Function

This blog post includes a video that continues our discussion of the ODUkP/ODUj-21_A_Sk Atomic Function.

In this case, we will start talking about defects that this function declares within the Lower-Speed ODUj Tributary Signals, which demultiplexes and demaps from the incoming ODUk Server Signal.

These defects include:

dMSIM[p] – Multiplex Structure Identifier Mismatch – for each ODUj Tributary Port signal, p, and
dLOFLOM[p] – Loss of Frame, Loss of Multi-Frame Defect (again) for each ODUj Tributary Port signal, p.

NOTE: We describe how the ODUkP/ODUj-21_A_Sk function declares and clears the dLOFLOM defect condition as we walk through the dLOFLOM/In-Frame State Machine Diagram.

Afterward, we discuss:

Defect Correlation Equations and Analysis, and
Consequent Equation Analysis

Finally, we wrap up and summarize the ODUkP/ODUj-21_A_Sk Function.

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OTN – Lesson 10 – Video 3M – ODUkP/ODUj-21_A_Sk Function

This post presents the 3rd of the 6 Videos that covers training on the Peformance Monitoring of the ODUk Layer (for Multiplexed Applications). This post focuses on the Sink Direction ODU-Layer Atomic Functions.

OTN – Lesson 10 – Video 3M – The ODUkP/ODUj-21_A_Sk (The ODUk to ODUj Multiplex Sink) Atomic Function

This page contains a video that discusses the ODUkP/ODUj-21_A_Sk Atomic Function in detail.

The purpose of this Atomic Function is to accept an ODUkP server signal and de-multiplex and de-map out each of the various lower-speed ODUj tributary signals within this ODUkP server signal.

This atomic function will also check for each of the following defects within the ODUkP Server and ODUj Tributary Signals:

ODUkP Server Level
- Service-Affecting Defects
  - dLOOMFI
  - dPLM
ODUj Tributary Level
- Service-Affecting Defects
  - dLOFLOM[p]
  - dMSIM[p]

We will cover how the ODUkP/ODUj-21_A_Sk function declares and clears these defects. And More….

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