Hello
My ISP (Shaw Canada) has recently offered 600Mbps service using the Arris XB6 modem. I have upgraded to this level and bridged my modem as I prefer to run a Mikrotik router.
If I plug a computer straight into the Shaw modem while bridged, I can run Speedtest.net against Shaw/various local servers and it jumps very quickly to 660Mbps.
The issue I'm having is that when I try to do the same speed tests through my CCR (pc plugged straight into my "lan" port), I can never get more than 350-450Mbps and it "takes time" to get to the very top.
I thought it might be my configuration so I just factory reset the router and tried with no rules other than the very basic one the initial wizard makes. This didn't help.
Thinking it could be specific to my CCR, I borrowed a slightly different CCR1009 (think it is a newer model...one with passive cooling). Test results were the same.
The interesting thing, is that if I run speedtest on two computers at the same time (behind a switch plugged into my CCR) I can observe that the total bandwidth used does reach the expected maximum (I see 660Mbps in Winbox on the WAN interface).
During all of my single session tests, I never saw any CPU core get very high (nothing higher than 30%). Fast track didn't make a difference. Picking different ports to ensure they aren't on a shared switch on the MIkrotik (e.g. 1 and 5) didn't make a difference. All links show up as 1Gbps and I even tried different patch cables.
Firmware is 6.43.7 though I did try 6.40.9 as one vendor I worth with who is better versed in Mikrotik (and also sees this issue on CCR testing with iperf) suggested it. Made no difference.
Realistically, I seldom come close to using this much bandwidth (only got it because the price was right...lower than what I was paying prior) and if I ever did it is more likely that it would be multiple devices consuming at once. That said, I'd like to find out why I can't get full speed through a router that I thought was overkill for the job.
Any suggestions would be appreciated.
Thanks!