learn-failed-count on CRS

Hi,

We have a pair of CRS-226 devices bridging two datacenters. Everything is working (with some headaches and annoyances, but working) except that we are getting some heavy packet loss in certain VLANs.

I suspect of the 1023 MAC learning limit of the ports (we have way more than that). Indeed, I see learn-failed-count reaching the millions in the “WAN” interfaces.

Is there any way to raise the 1023 MAC limit per port? Any idea on how to work around this?