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Inconsistent Packet Loss

Posted: Wed Oct 17, 2018 8:28 pm
by profician
We are having packet loss problems (along with high ping times) at a tower. I've been working the problem for awhile and cannot find a solution. Our monitoring system shows the problem starting at the Netonix WS-12-250-DC. But I see no problems on the switch. I've upgraded to firmware 1.5.0 (board rev F). Port isolation is on for all ports except the backhaul and on-site access router. STP is disabled. I also upgraded the backhaul (Ignitenet ML-60-35) firmware. The Netonix and backhaul are on the same network segment.
netonix_pings.png
Pings of the wisp switch

traffic.png
Traffic to the tower

backhaul_pings.png
Backhaul radio pings

Any suggestions on what to try next to figure this out?

Re: Inconsistent Packet Loss

Posted: Thu Oct 18, 2018 10:25 am
by sirhc
Look at each ports statistics looking for excessive pause frames or errors.
Try disabling Flow Control on all ports.

Re: Inconsistent Packet Loss

Posted: Fri Oct 19, 2018 1:36 am
by profician
I should have thought about flow control...
These stats are what you were expecting?
Metrolink_port_stats.png
Netonix stats from backhaul port (Metrolink)

What is the Rx Filtered?
Thanks for your help!

Re: Inconsistent Packet Loss

Posted: Fri Oct 19, 2018 8:11 am
by sirhc
Yes your Tx Pause Frames are VERY HIGH, I would disable Flow Control but find out why you are having these Pause Frames, where is the bottleneck.

As far as Rx Filter: viewtopic.php?f=6&t=1586&p=11746&hilit=+rx+filter#p11746

Re: Inconsistent Packet Loss - RESOLVED

Posted: Tue Oct 23, 2018 9:18 am
by profician
Turning off flow control fixed the problem. Thanks for your help!