tranceaddict84
Occasional Visitor
On Thursday my ISP swapped my ancient Zhone ONT/modem/router/AP for a simple GPON ONT/modem. The Zhone was in bridge mode, connected to the WAN port on my AC88U. The new ONT is purely a modem so replicates this setup.
Since then everything is good except that every 13 minutes 42 seconds (yes, I've timed it - it is this exact and predictable to the second) my internet connectivity will drop completely. It always recovers within ~5 seconds.
The drop causes RDP sessions to disconnect, any ongoing downloads to fail, and Sonos playback from web services to stop about 3 minutes later (presumably the size of Sonos's buffer). The RDP thing is the most annoying as I live in RDP sessions pretty much constantly for work.
Weird thing is I've had continuous pings running to 8.8.8.8 from my PC and from the router CLI, as well as a 100ms interval, port 443 tcping to my work's external Citrix Gateway IP, and these are not interrupted at all - not a single packet dropped. I've also had a laptop on my phone hotspot pinging my fiber WAN IP and this never drops, and I've tailed the router syslog file but nothing is logged there either.
Because of how predictable it is I was even able to test copying a large file to my NAS at the time of the drop, and the file transfer continued uninterrupted.
This happens simultaneously on all clients, wired or wireless. It doesn't happen when connecting a PC directly to the modem.
I was on Asuswrt-Merlin 384.19. I have updated to 386.2_2 as well as done a full settings reset but no difference.
If anyone has any insight into this I'd love to hear it, as I'm completely baffled. Attached my WAN settings as this is where I suspect the problem lies. I spoke to my ISP and they were helpful up to the point of diagnosing that their modem is fine and it's my router's fault. I've asked them to review my WAN settings too.
Cheers!
Since then everything is good except that every 13 minutes 42 seconds (yes, I've timed it - it is this exact and predictable to the second) my internet connectivity will drop completely. It always recovers within ~5 seconds.
The drop causes RDP sessions to disconnect, any ongoing downloads to fail, and Sonos playback from web services to stop about 3 minutes later (presumably the size of Sonos's buffer). The RDP thing is the most annoying as I live in RDP sessions pretty much constantly for work.
Weird thing is I've had continuous pings running to 8.8.8.8 from my PC and from the router CLI, as well as a 100ms interval, port 443 tcping to my work's external Citrix Gateway IP, and these are not interrupted at all - not a single packet dropped. I've also had a laptop on my phone hotspot pinging my fiber WAN IP and this never drops, and I've tailed the router syslog file but nothing is logged there either.
Because of how predictable it is I was even able to test copying a large file to my NAS at the time of the drop, and the file transfer continued uninterrupted.
This happens simultaneously on all clients, wired or wireless. It doesn't happen when connecting a PC directly to the modem.
I was on Asuswrt-Merlin 384.19. I have updated to 386.2_2 as well as done a full settings reset but no difference.
If anyone has any insight into this I'd love to hear it, as I'm completely baffled. Attached my WAN settings as this is where I suspect the problem lies. I spoke to my ISP and they were helpful up to the point of diagnosing that their modem is fine and it's my router's fault. I've asked them to review my WAN settings too.
Cheers!