Issues:
Some SFP+ ports pull close to 10G and others cant get better then 10M with high package loss.
Trouble Shooting:
Verified good SPF+ AOC and DAC, Test with 6 new cable same results
Purchased 2nd CRS317 Issue still present but between the 2 of them the ports with issues changed
Factory default settings
Updated Firmware and OS to 6.45.7
Tech support suggested verifying “Make sure that “/interface bridge port print” shows “H” flag on the ports you are testing through.” as that’s default setting they are.
Tried manually setting 10G vs auto negotiate no change
Disabled all ports test one at a time no change
Pulled all my hair out no change
At this point I’m close to shipping all my MikroTik hardware back and paying premium for a big box name that will just work. But would love to work through these issues.
Network:
CCRR1016-12S-1S+(router) over SFP+ to CRS317-1G-16S+(Switch) feeding RB4011iGs+5HacQ2HnD(AP) and 2x CRS328-24P-4S+RM(Switch)
firmware 6.45.7
All ports Bridged
Settings auto negotiate speed vs manual 10G full duplex no change
Loop protect default vs on port 9 speed increase from 3m to 22m
verified not a hot swamping issue
most ports with low speed through put only have slow downloads speeds but there upload is rock solid
Testing through put off network to ISP speed server and Ping tests to google dns plus pinging CRS and CCR. most ports with low speed have 100-300ms ping and heave loss. Ports with full speed lowing 1ms and full speed
CRS number 1:
CRS port 1 as WAN or root and 2-16 as LAN
Ports 1,2,3,5,6,15 full speed no loss
ports 4,10,12 high package loss
ports 7,/,9,11,13,14,16 low speed 1-22m
If you swap connections between good and bad port (e.g. switch port 3 and port 4 connections by pulling out SFP modules and pushing them to the other port, attaching cables to the original SFPs (effectively moving client to the other port), does the problem remain on the same switch port (and thus affects different client) or does it move to different port affecting the same client?
I originally anticipated it was a hardware issue so I bought a second crs317 but this time the issues are present on most of the same ports will post detail test results soon. I’ve also retested this with multiple isps and multiple SFP and received the same results.
Found the issues to be the use of a MikroTik compatible DAC cable that was not compatible with the NIC. So I switched out the SFP Transceivers. Issue solved
Just wanted to say thanks for posting this after you figured it out. I’ve been trying to track down a problem like this on a CRS317 as well and it turned out to be the DAC cable. After spending over a week trying everything under the sun, I read this post and replaced the DAC with two 10gig SFP+'s and a fiber patch cord and problem resolved.
