OTN – Lesson 10 – Video 7N – Extraction of a 100GBASE-R Client Signal from an ODU4 Signal

This post presents the 7th of the 7 Videos that covers training on the Peformance Monitoring of the ODUk Layer (for Non-Multiplexed Applications). This post focuses on the 100Gbps Ethernet Adaptation Sink Atomic Function, within the Sink Direction ODU-Layer Atomic Functions.

OTN – Lesson 10 – Video 7 – ODUkP/CBR_ETC100GR-g_A_Sk Atomic Function

This video discusses how the ODUkP/CBR_ETC100GR-g_A_Sk (100Gbps Ethernet Adaptation Sink) Atomic Function processes an ODU4 signal that it receives from the upstream ODUk_TT_Sk Function.  

In particular, this video discusses how this function terminates the ODU4 overhead, extracts out, processes, and terminates the OPU4 overhead before it extracts and processes the 100GBASE-R client signal.

Continue reading “OTN – Lesson 10 – Video 7N – Extraction of a 100GBASE-R Client Signal from an ODU4 Signal”

OTN – Lesson 10 – Handling Defects at the ODU-Layer – Defect Scenario Video

In this video, we presume that some ODUk- (or OTUk-) Layer circuitry is declaring a certain defect condition. We then determine how ODU-layer circuitry is expected to respond.

OTN – Lesson 10 – Handling Defects at the ODU-Layer – Defect Scenario for Multiplexed and Non-Multiplexed Applications

This video summarizes each of the various defects that OTN circuitry can declare/clear at the ODU-Layer.  

This video also describes how ODU-Layer circuitry is expected to respond to each of these ODU-Layer (or upstream OTU-Layer) defects.  

  • Should it transmit PM-BDI (Path Monitoring – Backward Defect Indicator) upstream?
  • Should it replace the under-lying 100oBASE-X or 100GBASE-R client signal with either the Link or Local Fault Indicator?  

NOTE:  This video covers both Non-Multiplexed and Multiplexed Applications.

Continue reading “OTN – Lesson 10 – Handling Defects at the ODU-Layer – Defect Scenario Video”

OTN – Lesson 10 – Video 6M – End of ODU-Layer/Multiplexed Sink Circuitry

This post presents the 6th 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 6 – The ODU0_TT_Sk and ODUkP/CBR_ETC1000X_A_Sk Atomic Functions

This blog post contains a video that wraps up our discussion of the Sink (or Receive) Atomic Function circuitry for the ODU-Layer/Multiplexed Applications.  

More specifically, this video includes a discussion of the following Atomic Functions.

  • ODU0_TT_Sk Function, and
  • ODU0P/CBR_1000X-g_A_Sk Function

Continue reading “OTN – Lesson 10 – Video 6M – End of ODU-Layer/Multiplexed Sink Circuitry”

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 now start talking about defects that this function declares within the Lower-Speed ODUj Tributary Signals, that it 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 Analyis, and
  • Consequent Equation Analysis

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

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

OTN – Lesson 10 – Video 4M – ODUkP/ODUj-21_A_Sk Atomic Function

This post presents the 4th 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 4 – Continuation with the ODUkP/ODUj-21_A_Sk Atomic Function

This blog post contains a video that continues our discussion of the ODUkP/ODUj-21_A_Sk Atomic Function.  Further, this video picks up (where we left off in Video 3) where we were discussing the need to maintain synchronization with the OMFI byte-field, and

It proceed to describe how the ODUkP/ODUj-21_A_Sk declares and clears the dLOOMFI defect condition, as we walk through the dLOOMFI/In-Multi-Frame State Machine Diagram.  

Continue reading “OTN – Lesson 10 – Video 4M – ODUkP/ODUj-21_A_Sk Atomic Function”

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 3 – 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.  

And More….

Continue reading “OTN – Lesson 10 – Video 3M – ODUkP/ODUj-21_A_Sk Function”

OTN – Lesson 10 – Video 2M – The OTUk/ODUk_A_Sk and ODUk_TT_Sk Atomic Functions

This post presents the 2nd 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 2M – The OTUk/ODUk_A_Sk and ODUk_TT_Sk Atomic Functions

This blog post includes a video that begins our discussion of the Sink (or Receive) Direction Atomic Function/Circuitry for the ODU-Layer/Multiplexed Applications.  

In particular, this video reviews the following Atomic Functions

  • OTUk/ODUk_A_Sk Function
  • ODUk_TT_Sk Function

NOTE:  Even though we did review these functions back in the Non-Multiplexed portion of Lesson 10 Training; I wanted to review the Consequent Equations for these functions (once again), because these equations do impact the signals that the ODUkP/ODUj-21_A_Sk function (downstream) will “see”.

Continue reading “OTN – Lesson 10 – Video 2M – The OTUk/ODUk_A_Sk and ODUk_TT_Sk Atomic Functions”

OTN – Lesson 10 – Video 1M – Entire Source Direction Path – All Atomic Functions (ODU Multiplexed Applications)

This post presents the 1st of the 6 Videos that covers training on the Peformance Monitoring of the ODUk Layer (for Multiplexed Applications). This post focuses on the Source Direction ODU-Layer Atomic Functions.

OTN – Lesson 10 – Video 1 – The Entire Source Direction Path – All Atomic Functions (ODU Multiplexed Applications)

Check Out the Video Below

Click HERE to Go to Video 2 – The OTUk/ODUk_A_Sk and ODUk_TT_Sk Atomic Functions

Click HERE to return to the Main Lesson 10 Page – Multiplexed Applications

What We Cover in this Video

Video 1 (of the Multiplexed ODu4 System Videos) covers the following topics.

  • A brief review of Multiplexed Applications:
    • The PT = 0x20 Approach, and
    • The PT = 0x21 Approach
  • A brief review of the ITU-T G.798 Atomic Function’s support of the Multiplexed Applications
    • The ODUkP/ODU[i]j_A_So/Sk Functions (for PT = 0x20 Applications), and
    • The ODUkP/ODUj-21_A_So/Sk Functions (for PT = 0x21 Applications)
  • Our Application Example: 80 Channels of 1000BASEX -> ODU0 -> ODU4
  • ODU0P/CBR_ETC1000X-A_So (1Gbps Ethernet Adaptation Source Function)
  • Main Purpose: To take a 1000BASE-X (1Gbps Ethernet signal) and to map this signal into an ODU0 signal using the GMP-TTT Mapping Procedure.
    • Generates a Default PMOH within the outbound ODU0 signal.
    • Sends the ODU0 signal towards the downstream ODU0_TT_So function for further processing
    • On-Board Clock Generator
      • Synthesizes a 1.244160GHz Clock signal (e.g., the ODU0 bit-rates per ITU-T G.709) along with the AI_CK, AI_FS, and AI_MFS output signals.
    • ODU0 Overhead Settings
      • PT (Payload Type) within the PSI Message – set to 0x07 for 1000BASE-X mapped into an ODU0.
      • CI_SSF -> CSF bit-field within the outbound PSI Message (of OPU0 Frame)
  • ODU0_TT_So Function
  • Main Purpose: To compute a Real (and Correct) PMOH and insert data into its ODU0 data-stream.
    • The role of this function is very similar to what we described back in the discussion of the ODUk_TT_So function (in the Non-Multiplexed Portion of Lesson 10).
  • ODUkP/ODUj-21_A_So Function (ODUk to ODUj Multiplex Source Function)
  • Main Purpose: In this example, the ODUkP/ODUj-21_A_So function will map and multiplex 80 ODU0 signals into an OPU4/ODU4 server signal.
    • Convert each ODUj tributary signal into an Extended ODUj signal by attaching the FAS and MFAS fields to each ODUj frame.
    • APS Support
      • Within the ODUj Tributary Signal itself, and
      • Within the ODUk Server Signal
    • Can configure each ODUj tributaries to operate in the Locked Mode (e.g., it overwrites the ODUj tributary signal with the ODUj-LCK Maintenance signal and maps/multiplexes that signal into the ODUk server signal.
    • Setting the PT byte (within the outbound ODUk server signal to 0x21).
    • Quick Review of the MSI bytes (within each outbound PSI Message).
    • The OMFI Byte-field (for ODU4 Multiplexed Applications ONLY).
    • We set the PMOH within the ODUk Server Signal to the Default Values. Route this signal to the downstream ODUk_TT_So Function.
  • ODUk_TT_So Function
  • Main Purpose: To compute a Real (and Correct) PMOH and insert data into its ODU4 data-stream.
    • The role of this function is the same as what we described back in the discussion of the ODUk_TT_So function (in the Non-Multiplexed Portion of Lesson 10).
  • OTUk/ODUk_A_So Function
  • Main Purpose: To map an ODU4 client signal into the OTU4 Server signal.
    • The role of this function is the same as what we described back in the discussion of the ODUk_TT_So function (in the Non-Multiplexed Portion of Lesson 10).

In Figure 1, I highlight the Atomic Functions that we discuss in Video 1.

ODU4/OTU4 Multiplexed System with the Source Direction Atomic Functions Highlighted

Figure 1, Illustration of the ODU4/OTU4 System, with the Atomic Functions, that we discuss in Video 2, highlighted

You Can Also Check Out the Video Below:

Click HERE to Go to Video 2 – The OTUk/ODUk_A_Sk and ODUk_TT_Sk Atomic Functions

Click HERE to return to the Main Lesson 10 Page – Multiplexed Applications

OTN – Lesson 10 – Video 6N – Round-Trip Path Delay Measurements, pN_Delay

This post presents the 6th of the 7 Videos that covers training on the Peformance Monitoring of the ODUk Layer (for Non-Multiplexed Applications). This post focuses on the Sink Direction ODU-Layer Atomic Functions. More specifically, this post presents a video that describes how we can use the ODUk_TT_So and ODUk_TT_Sk atomic functions to measure the pN_Delay parameter.

OTN – Lesson 10 – Video 6 – pN_Delay Measurements (via the ODUk_TT_Sk and ODUk_TT_So Atomic Functions)

This blog post includes a video that discuss how we perform round-trip path delay measurements, pN_Delay, (using two sets of ODUk_TT_Sk and ODUk_TT_So functions), by manipulating the DMp bit-field, within each ODUk frame.  

This video also closes out our discussion of the ODUk_TT_Sk Atomic Function.  

Continue reading “OTN – Lesson 10 – Video 6N – Round-Trip Path Delay Measurements, pN_Delay”

OTN – Lesson 10 – Video 5N – ODUk_TT_Sk Atomic Function

This post presents the 5th of the 7 Videos that covers training on the Peformance Monitoring of the ODUk Layer (for Non-Multiplexed Applications). This post focuses on the Sink Direction ODU-Layer Atomic Functions. More specifically, this post presents a video that discusses how the ODUk_TT_Sk Atomic Function declares and clears the PM-dDEG defect condition.

OTN – Lesson 10 – Video 5 – The ODUk_TT_Sk Atomic Function

This blog post presents a video that continues our discussion of the ODUk_TT_Sk Atomic Function.  

This video covers the following features within the ODUk_TT_Sk Atomic Function.

  • How it declares and clears the dDEG (Path Signal Degrade) defect condition.
  • What the ODUk_TT_Sk function do with its AI_TSF Output pin whenever it declares a Service-Affecting defect condition.
  • What the ODUk_TT_Sk function do with its AI_TSD Output pin whenever it declares the dDEG (Signal Degrade) defect condition.  
  • Defect Correlation Equation Analysis
  • Consequent Equation Analysis 
  • Performance Monitoring Equation Analysis

Continue reading “OTN – Lesson 10 – Video 5N – ODUk_TT_Sk Atomic Function”