OTN – Lesson 12 – Continuation of Discussion of APS Commands for Protection Switching – Part III

This blog post contains a video that continues the discussion of the APS Commands. This video serves as Video 3 of this series of APS Command videos.

Lesson 12 – Video 10 – Detailed Discussion of APS Commands – Video 3

This blog post continues our discussion of APS Commands and the APS/PCC Communication Protocol. This video serves as Video 3 in this discussion. This blog post discusses completing the Force Switch Commands, and the SF (Signal Fail) Commands using the APS/PCC Communication Protocol.

In particular, this video will discuss the following topics:

  • Executing the Force Switch – Normal Traffic Signal n to Protection (for the 1:N Protection Architecture) – Continued from Video 9
    • Implementing the Force Switch – NULL Test Signal to Protection Command – another way to resume Normal Operation.

Signal Fail APS Commands

  • Executing the Signal Fail – Working Transport Entity (SF_W) Command (for the 1+1 Protection Architecture)
    • How does a given Network Element invoke the SF_W Command?
    • The Protection Group’s operation during SF_W Command execution.
    • How do we Recover from this Command (for a Reverting System)?
      • Use of the WTR (Wait-to-Restore) Command
  • Executing the Signal Fail – Protection Transport Entity (SF_P) Command (for the 1+1 Protection Architecture)
    • How does a given Network Element invoke the SF_P Command?
    • The Protection Group’s operation during SF_P Command execution.
    • How do we Recover from this Command?
  • Executing the Signal Fail – Working Transport Entity (SF_W) Command (for the 1:N Protection Architecture)
    • How does a given Network Element invoke the SF_W Command?
    • The Protection Group’s operation during SF_W Command execution.
    • How do we Recover from this Command (for a Reverting System)?
      • Use of the WTR (Wait-to-Restore) Command.
  • Executing the Signal Fail – Protection Transport Entity (SF_P) Command (for the 1:N Protection Architecture)
    • How does a given Network Element invoke the SF_P Command?
    • The Protection Group’s operation during the SF_P Command execution.
    • How do we Recover from this Command?

Check Out the Video Below

Continue reading “OTN – Lesson 12 – Continuation of Discussion of APS Commands for Protection Switching – Part III”