Inconsistent Packet Loss

profician
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Inconsistent Packet Loss

Wed Oct 17, 2018 8:28 pm

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?

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sirhc
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Re: Inconsistent Packet Loss

Thu Oct 18, 2018 10:25 am

Look at each ports statistics looking for excessive pause frames or errors.
Try disabling Flow Control on all ports.
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profician
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Re: Inconsistent Packet Loss

Fri Oct 19, 2018 1:36 am

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!

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sirhc
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Re: Inconsistent Packet Loss

Fri Oct 19, 2018 8:11 am

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
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Re: Inconsistent Packet Loss - RESOLVED

Tue Oct 23, 2018 9:18 am

Turning off flow control fixed the problem. Thanks for your help!

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