Recently I have got an SMSF drop from my isp. Isp end has an SFP media converter and they give me the other SFP of that pair with a media converter. after a successful link I decided to bypass the media converter and put the SFP directly in my RB911G-2HPnD. after petting the SFP link established and all was okay but suddenly after 3 days, I realized that my internet was lost. I saw that the fiber link is okay I can see tx and Rx light level but there is no IP connectivity. then I decided to return to the media converter setup. after connecting with the media converter all was okay. Does Anybody faced this kind of problem?