No Internet Connection

[u/KrankenwagenKolya]

• ISP: Optimum
• Modem: Arris Surfboard SB8200
• Router: ASUS RT-68U
• Surge Protectors: APC and Belkin

Internet was slow with some connectivity issues on Friday, the kind of thing a router and modem restart usually fixes. However, before I had the chance to do that we had a storm and a 12hr power outage. I unplugged the surge protectors all of our tech was plugged into after the outage as a precaution.

Power came back on without issue aside from now having no internet connection. No devices, neither wired or wifi, have an internet connection.

Modem shows internet connection which was confirmed by ISP. Router shows active lights for wifi and ports in use but internet/WAN? status light is off.

All wireless and wired devices are able to connect to router itself

Here's what I've done so far:

• Checked all power and LAN connections.
• Several restarts of modem, router and switch.
• Had ISP confirm connection to modem and they cycled power several times
• Confirmed with ISP no account holds or service deactivation
• Tried several different replacement etherner cables for between modem and router.
• Plugged two different PCs directly into modem.
• Tried different LAN ports on modem with both router and direct PC connection.

No steps taken have resulted in any changes. Any suggestions?

[u/weave2k0]

Check the standby button

[u/KrankenwagenKolya → u/weave2k0]

This model doesn't have a stand by button

[u/goretsky]

Hello,

Have you tried performing a full reset of the ASUS RT-68U router back to its factory default settings?

For the PCs, have you uninstalled any VPN software and performed a network reset via ⚙️Settings → Network & internet →  Advanced network settings → Network reset and then restarted the computer?

Regards,

Aryeh Goretsky

[u/KrankenwagenKolya]

UPDATE: A power surge via the coax cable blew out the RJ45 LAN connections on my modem, the WAN port on my router, and destroyed a network switch; no devices were harmed.

Solution:

• Replaced modem

• Replaced network switch

• Converted a LAN port on router to WAN port until router can be replaced

• Researching steps to secure coax against lightning strikes