I seem to be having a strange issue with my RB1200 where I start seeing 25%+ PL mostly in the evenings over the past few days.

I did think I might have somehow caused a switching loop as I have 2 Uplinks to the Rack Switch one on ETH9 and on on ETH10 but even if I disable one of the ports and switch both the subnets to be routed over 1 port I still end up with a lot of packetloss.

The RB handles 1x /27 and 1x /28

There are 2 SSTP tunnels connected permanently but neither push much traffic, sometimes I'll SSTP in from a laptop if im on a public wi-fi but otherwise very little traffic at all on this RB.

Weird thing is it's been happening over the last few days i'd not noticed it previously.

Been looking into this and it seems to be just me that's having the problem other stuff in the same rack on the same switch i'm connected to is fine.

I have some latency/throughput graphs from various locations, including a server in the same rack (Smokeping) the RB is very lightly loaded.

I'm thinking of trying to get one of the connections to the Rack switch moved to alower port as I've seen posts before that suggest ports 9 and 10 on a 1200 can be a bit funny sometimes.


http://imgur.com/a/0VjBe - for various Latency/Throughput graphs for the last few days. (Used Imgur for simplicity)

Edit:

Forgot to mention Software version sorry, it's 5.14

Hmm

Pinging the other side of the router (ports 1 and 2) is fine, both 9 or 10 (enabled/disabled them independently) show the problem.

I'm going to try and get the cable in port 10 moved to one of the other free ports just to eliminate ports 9/10 on my RB as having gone bad seeing as I've seen other people complain about those ports on their 1200's before.

Just had the Uplink moved to port4

Initial results look good Packetloss is gone and also much less jitter on the connection.

Will monitor it further but it looks like ports 9 and 10 on my RB1200 are faulty

Spot when the port was changed.

I have 2 RB1200's and the port 9 and 10 both see erratic packet behaviour. despite upgrades i have just decided to not use these ports on these units.

Did you get to the bottom of this port 9/10 issue?

I am a new RB1200 owner and have found this with iperf from PC to PC:
Throughput without the Routerboard in the circuit measured as 417 Mbits/sec.
Throughput with port 10 in the circut measured as around 39 Mbits/sec. Port 9 is similar.
Throughput with port 6, 7 or 8 in the circuit measured as 383 Mbits/sec.

Have reported to support but wondered whether others had resolved this.

Interesting response from support:

Yes, we aware about this issue - ether9 and ether10 uses different driver than
other ports, we need to make some adjastments in that driver. We wil ltry to fix
that as soon as possible.

would be nice if they do, will be good to have 10 ports on the units

Any news on that issue?

Hmm. Support, on 28 August, said "We have not stopped working on this issue" but there is no resolution.

Maybe if lots of other users report the same fault?

Just got into that problem. a lot of packet loss with only 50mbits traffic. Going to change the port today.

Any updates on this? We are also experiencing the same issue.

I too am running into this issue and I just installed a RB1200 inline of my devices.

I fixed my issue by turning off the service-ports.... Even in the Cisco world they don't work....

Cheers!
Doogs