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SF Switch settings

Created: Aug 4, 2021 09:03:53Latest reply: Aug 4, 2021 09:10:06 256 1 0 0 0
  Rewarded HiCoins: 0 (problem resolved)

In our network, 5 OLP cards performed a SF switch at the same time.

These are all currently running on the protection.


It is noticeable that there was a small level change on all 5 cards (port 1) at the same time. 

The reason for this is not clear.

 

What settings / parameters do we need to change so that such switching is not performed in the future.

A failover switch would only be desirable if the primary link has a fiber problem (R_LOS).

Or are there switching triggers which we still need to set? If so, where and how?


Thank you,


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liqiang185
Admin Created Aug 4, 2021 09:10:06

Hi friend!

The switching cannot be triggered only by the R_LOS alarm. However, we can reduce the probability of switching being triggered.

1. Deactivate the SD trigger condition and deactivate the SF-triggered PM and TCM performance events.


OLP

2. Set the difference threshold of the working and protection input optical signals to 8 dB.

OLP1

Note: Switching may not be triggered, the switching may not be triggered when services are interrupted. The normal settings are as follows:

OLP2

OLP4


I suggest you check whether the multiplexed-wavelength signal is normal. If yes, clear the fault on the multiplexed-wavelength signal channel. Because five OLP boards are switched at the same time, not only one optical-layer trail is affected.

Thanks!

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All Answers

Hi friend!

The switching cannot be triggered only by the R_LOS alarm. However, we can reduce the probability of switching being triggered.

1. Deactivate the SD trigger condition and deactivate the SF-triggered PM and TCM performance events.


OLP

2. Set the difference threshold of the working and protection input optical signals to 8 dB.

OLP1

Note: Switching may not be triggered, the switching may not be triggered when services are interrupted. The normal settings are as follows:

OLP2

OLP4


I suggest you check whether the multiplexed-wavelength signal is normal. If yes, clear the fault on the multiplexed-wavelength signal channel. Because five OLP boards are switched at the same time, not only one optical-layer trail is affected.

Thanks!

View more
  • x
  • convention:

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