Hi,

I encounter a strange issue with an GPON-ONU-34-20BI inside a CRS305.
In the last month, the SFP fail, show a TX=-40dB on the SFP information page of RouterOS.
I had to disable / enable the SFP port to retrieve a connection.
The issue appears on different versions of ROS from 7.7 to 7.9.2.
No log or something like that on the CRS305.
It appears not very often, about 1 time / month or two.

I had to schedule a small script to check TX value and auto disable / enable to workaround the issue.

Is this a know issue ?
thanks.

I have this exact problem, only much more often, once every 2-3 days.
I use 2 GPON SFP, seems to have a problem with one or the other from time to time.

Hi,

It seems that the last 7.15 beta is better.
Did you tried ?

Hi,

It seems that the last 7.15 beta is better.
Did you tried ?

Yes, I already tried, this has been happening for several versions, I always updated in an attempt to solve the problem.

Ok.
I moved these SFP to a CRS310 and I have no more issues.
Some people also used CRS328 with success.
The issue seems to be only related to CRS305.

Ok.
I moved these SFP to a CRS310 and I have no more issues.
Some people also used CRS328 with success.
The issue seems to be only related to CRS305.

I confirm this, I tested on a CCR2116-12G-4S+ and I did not have this problem.
Could it be a bug?

Yes of course