Hello,
I have one Mikrotik router , which has Rx Overflow filled in, and its big number. Can someone elaborate, how this can affect internet connection?
Its happening both on WAN and LAN ports. Is this ISP problem, or bad cabling or soemthing else?
Its RB450G , 6.19.
I have other 4 locations of the same company, all using the same ISP, all conected to main office over IPsec, all mikrotik, but only this one has Rx Overflow value filled in.
Same prob. on some of my routers MIPBE and CCR all version 6.19..on some lan ports RX overflow
Any help from Mikrotik GUYS will be helpful.. 
Thank you
If you have a slower interface in the middle of a path you will get overflows
as soon as the interface is to slow to forward all packets.
This happens even on lightly loaded interfaces if you have bursts which fill up the buffers.
You can reduce this with rx/tx flow control. If enabled the router which gets to much packets send
back pause frames to tell the sending next hop to reduce packet rate.
You may try different queuing strategies/buffer sizes. But to big queues might add latency and cause
buffer bloat problems.
Best is to increase bandwidth of the overloaded link.
Sorry to dig this thread up, but i have this issue bugging me for some time.
On several Mtiks, all RB1200 and couple of 1100AHx2’s, this is happening. Links have this RX overflow increasing. Not much of a problem, but im trying to figure it out. What is the solution for this? I will try rx control option, but i dont want to cause performance issues. Your 2 cents on this?
Any update on this why it may be occurring and hot to fix it?
Running a RB1100 port 1 Gig-e, connects to firewall getting RX Overflow.
I monitor the traffic on the port never gets over 30mb so it should not be overflowing the 1GIG port.