Hi, I have a problem with intermittent but frequent port flapping on a new RB 3011. I am new to Router OS, so not sure where to go. The ISP say the problem is internal and all is good to the ONT (1 gigabit service).One thing I have noticed is the pppoe client interface has an MTU set to 1480. All others are at 1500. With My previous setup on a different ISP I had the Linux servers running a lower MTU as they had issues getting stable connections, while the windows machines were fine with the default setting. Could this be a cause of my problems?
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