Gateway Loss / Health

[MrBee]

Hi there, a few questions about gateway loss / health.

I upgraded my internet connection at home, because of this my ISP gave me a new modem (I'm now on a gigabit connection). I used to run pfSense on a mini ATX Intel embedded board - dual NICs, etc..
Soon after getting the gigabit connection, I realized my router setup wasn't fast enough to get full gigabit speeds (processors were too slow). I bought a Protectli box which I installed OPNsense on (this is my current setup).
Problem solved, I'm able to get full gigabit speeds.

The issue I'm having is intermittent gateway loss (50-98%). When this loss percentage ramps up, the internet is barely usable.

Two things changed before this started happening: 1) new modem from my ISP, and 2) new router, now running OPNsense.

Is there any known issues with OPNsense and gateway loss? Or is this probably an issue on my ISPs end?

If I'm home when it's happening, I can power cycle my modem and the problem seems to resolve. If I'm travelling, and trying to use my Plex server (for example), it's unusable until the issue resolves itself -- which can take hours.

I've attached an image of the health report graph available in OPNsense.

If anyone has any ideas or suggestions, I'd love to hear them.

Thanks.

[opnfwb]

Yikes! That's a large amount of packet loss!

This is most likely an ISP issue, especially since you report that Plex access from an external source is also impacted at the same time as the packet loss is taking place. It would be worth checking the bandwidth graphs within the router to see if there is a spike in bandwidth usage at the same time as the packet loss. This could indicate severe buffer bloat issues but again, I suspect this is most likely the ISP.

Can the ISP check the modem to verify all of the channels look good and test your line for packet loss?

[MrBee]

Hey thanks for the response.

I checked the bandwidth graphs, and don't see a correlation.

I suppose next time it's happening I should call my ISP and have them do some diagnostics.

I was thinking about backing up my OPNsense settings, and putting pfSense back on to see if that changes anything.

[opnfwb]

If you go to Interfaces/Overview, you can expand the LAN and WAN interfaces and see if there are any errors or collisions listed. Other than that I don't know what else to tell you. I don't think changing to pfSense would help, if it's a driver issue pfSense still uses BSD just like OPNsense so you'd have very similar hardware support (or lack thereof).

If this is a DOCSIS cable modem, the ISP can view channel levels even when loss isn't happening and may be able to determine a cause.

[MrBee]

I just checked on errors or collisions for both interfaces -- all 0's.
If there were errors / collisions at one point, would they be reset back to 0 after some time?