I have a Synology NAS (DS1813+) that is seeing a significant number of errors on the eth0 interface. Strangely Dropped and overruns are always exactly the same.
Example
+++++++++++++++++++++++++++++++++++++++++++++++
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:24565747 errors:0 dropped:73295 overruns:73295 frame:0
TX packets:22157269 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:23025883380 (21.4 GiB) TX bytes:30893815725 (28.7 GiB)
+++++++++++++++++++++++++++++++++++++++++++++++
I get a few RX errors if I just copy to NAS
I get no RX errors if I copy from the NAS
I get TONS of RX errors if I copy to/from NAS simultaneously
I never get TX errors.
I tried different network cables, switch ports, interfaces on the NAS, nothing seemed to make a difference.
I never get any dropped packets listed in winbox when viewing the Ethernet port the NAS is on. I assume that is because its not dropping in the switch.
Possible solution
turn RX flow control on for the interface the NAS is plugged into. It really does appear to work. The NAS does not seem to increment errors, and the switch increments RX pauses.
My question is
Call it a day and close the issue, or continue to look into it. Seems to me that the synology should be fast enough to handle a single gig link, heck it comes with FOUR interfaces!!!