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Nighthawk R8500 down after one device connects to the guest network
When a device connects to the guest wifi, it brings down the entire network and nothing can connect, neither wifi, nor ethernet. The same problem was already described here: https://community.ne...
Strange. Any clues in the logs for the R8500?
Good question. I have tried:
1. In router Administration, "Clear Logs", got a message like:
[Log Cleared] Monday, Mar 08,2021 18:23:06
2. Activate Guest Network, 5GHz, 2nd radio
3. Login from Android mobile
Within a minute all connection fail (wired, normal wifi, guest)
4. After few minutes router somehow restarts itself, I go to the Administration and this is all I find in the log:
[OPENVPN] NTP sync time failed. Get correct system time then reconnect.
[DHCP IP: (192.168.0.106)] to MAC address 00:04:20:EF:AF:84.
[DHCP IP: (192.168.0.104)] to MAC address 00:04:20:EF:B9:A9.
[DHCP IP: (192.168.0.95)] to MAC address 54:60:09:F9:B7:9C.
[DHCP IP: (192.168.0.113)] to MAC address AC:57:75:F3:9E:AE.
[DHCP IP: (192.168.0.115)] to MAC address AC:FD:CE:B0:0F:CC.
[Initialized, firmware version: V1.0.2.144]
[DHCP IP: (192.168.0.93)] to MAC address A4:77:33:69:9D:74.
[DHCP IP: (192.168.0.96)] to MAC address 00:01:C0:1B:3A:DD.
[DHCP IP: (192.168.0.108)] to MAC address 30:05:5C:FC:35:5C.
[DHCP IP: (192.168.0.112)] to MAC address EC:FA:BC:48:8E:D5.
[DHCP IP: (192.168.0.111)] to MAC address B4:E6:2D:7D:94:85.
[DHCP IP: (192.168.0.110)] to MAC address B4:E6:2D:7D:92:2B.
What surprised me that I don't see anymore the [Log Cleared] message. So did the router clear the log during the reset caused by the guest login?
Interesting. But still uzzling.
This looked odd to me:
[OPENVPN] NTP sync time failed
I have no idea what it means. But it might offer some areas for experimentation.
Are you using OPENVPN?
I don't use VPN actively, it is just configured for the case "if needed" and it seems to work.
I turned it off, but with the guest network the same behaviour. To be more accurate: the phone indicates with the icon that it has connected to the guest network, but as soon as I open a browser and try to load a page, so the router resets itself (so e.g. the streamed music, that I started before on my wired desktop, stops, and I can't access router admin interface).
[Time synchronized with NTP server] Monday, Mar 08,2021 20:30:25
[Internet connected] IP address: 195.218.23.52, Monday, Mar 08,2021 20:30:25
[DHCP IP: (192.168.0.106)] to MAC address 00:04:20:EF:AF:84, Monday, Mar 08,2021 20:30:19
[DHCP IP: (192.168.0.93)] to MAC address A4:77:33:69:9D:74, Monday, Mar 08,2021 20:30:17
[DHCP IP: (192.168.0.113)] to MAC address AC:57:75:F3:9E:AE, Monday, Mar 08,2021 20:30:17
[Initialized, firmware version: V1.0.2.144] Monday, Mar 08,2021 20:30:16
[DHCP IP: (192.168.0.108)] to MAC address 30:05:5C:FC:35:5C, Monday, Mar 08,2021 20:30:12
[DHCP IP: (192.168.0.115)] to MAC address AC:FD:CE:B0:0F:CC, Monday, Mar 08,2021 20:30:12
[DHCP IP: (192.168.0.96)] to MAC address 00:01:C0:1B:3A:DD, Monday, Mar 08,2021 20:30:10
[DHCP IP: (192.168.0.95)] to MAC address 54:60:09:F9:B7:9C, Monday, Mar 08,2021 20:30:09
[DHCP IP: (192.168.0.112)] to MAC address B4:E6:2D:7D:92:2B, Monday, Mar 08,2021 20:30:07
[DHCP IP: (192.168.0.111)] to MAC address B4:E6:2D:7D:94:85, Monday, Mar 08,2021 20:30:07
[DHCP IP: (192.168.0.110)] to MAC address EC:FA:BC:48:8E:D5, Monday, Mar 08,2021 20:30:07
[DHCP IP: (192.168.0.104)] to MAC address 00:04:20:EF:B9:A9, Monday, Mar 08,2021 20:30:05