Please help me to analyse what happens with packets that are received with errors.

How and where I can collect them to analyse??? And also wants to see what happens with dropped ones.. Tried to use internal logging, but there is hothing about error and drop.. Packet errors happens when it wish, so I can't wait them all the day (today they happens tomorrow not).. Drops are too not happened allways...

Which tool, or program could help me with ?

what MTU have vlan interfaces?

Good day alexspils!

It is the same as Ethernet MTU ( 1500 )

I tried to move 400 vlan on a different interface ~ 4eth,- seems to rx errors coming from it, but all the options is the same on both 500 and 400 VLAN's... How can I catch those packets ??

Good day !

I increased MTU size on RouterOS till 9216 on ethernet which belongs to 400 VLAN 1500 MTU, because on other side it connected to a programmable Switch where programmed Giga Ethernet 9216 MTU,and VLAN 400 - 1500 MTU.. Seems to ERROR drops not happened anymore, but ROS eating alittle bit more RAM +100MB and it grows..

Is it a right decision of problem ??????