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General Discussion / WAN drop-outs
« on: January 17, 2021, 12:14:30 am »
I've got OPNSense on bare metal, and am seeing intermittent WAN dropouts anywhere from a couple seconds to a minute. It happens a lot more with high traffic. At first, I thought it was due to running in KVM/libvirt, so I bought router hardware, and am seeing the same issue. We called Spectrum, our ISP, and they say everything looks good on their end.
I've tried every setting I could find through exploration and through other forum posts, e.g. disabling IDS, disabling IPv6, changing firewall optimization, enabling gateway monitoringj, disabling state killing on gateway failure, "override MTU" on the WAN on and off, and experimented with other settings as well.
I still don't know whether this is an ISP problem, an OPNSense problem, or maybe a mixture of both. It's never been 100% stable, even when using other routers, i.e. the UDM-Pro, but it's far worse now with OPNSense. The drops get much worse with high traffic.
I've tested with the mtr tool, trying to get as close as possible to the modem. SSHing into OPNSense, then running
still shows drop-outs. Is it possible for OPNSense to be at fault this close to the modem, or is this certainly an ISP issue based on this test?
BTW, when the drop-outs occur, mtr outputs "no route to host". It seems to be more correlated with maxing out uploads rather than downloads.
I've tried every setting I could find through exploration and through other forum posts, e.g. disabling IDS, disabling IPv6, changing firewall optimization, enabling gateway monitoringj, disabling state killing on gateway failure, "override MTU" on the WAN on and off, and experimented with other settings as well.
I still don't know whether this is an ISP problem, an OPNSense problem, or maybe a mixture of both. It's never been 100% stable, even when using other routers, i.e. the UDM-Pro, but it's far worse now with OPNSense. The drops get much worse with high traffic.
I've tested with the mtr tool, trying to get as close as possible to the modem. SSHing into OPNSense, then running
Code: [Select]
mtr <ISP gateway IP>
still shows drop-outs. Is it possible for OPNSense to be at fault this close to the modem, or is this certainly an ISP issue based on this test?
BTW, when the drop-outs occur, mtr outputs "no route to host". It seems to be more correlated with maxing out uploads rather than downloads.