> [...] ISP supplied Cisco DPC3216 modem
Only a modem. Should be harmless. Presumably, the LED indicators on
that modem don't indicate a problem?
Your description of the role of the D7000 is a bit confused. You
should be using it as a wireless router, ignoring its DSL modem.
(Saying that it's "configured as a wireless access point" implies that
it's _not_ also acting as a router.)
What's the IP address of the computer from which you are "unable to
ping the router"?
> [....] Attempted the following "ping" commands [...]
"ping" is an actual command. On a Windows system, you'd need to
launch a Command Prompt (or similar) window to use it. A Web search for
terms like, say "ping Windows" would find more info. Responding to
"ping" is a lower-level test than responding to a web browser.
Back to the web browser, "ERR_INVALID_HTTP_RESPONSE" is not an error
which I'd expect to see. That suggests that the management web site on
the D7000 is not dead, but it's not working properly.
If you try this soon (within a few minutes) after a restart, does it
still fail that way?
It shouldn't matter, but you might also try this without the
connection between the modem and the D7000.
> [...] the Netgear Nighthawk D7000v1router "internet" LED indicator
> still shows a solid white light, [incorrectly] indicating [...]
Sounds like a firmware bug, but it may not be an important one. I
have a dim recollection of seeing similar reports when the Ethernet
WAN/Internet port was used. (Possibly opposite -- always off.) It's
always worked right for me with a DSL connection, but I can believe that
the Ethernet case was mishandled.
I've never noticed repeated, brief service interruptions on mine.
What I get is a complete seizure at roughly monthly intervals, at least
through firmware V1.0.1.74_1.0.1. (I'm running V1.0.1.78_1.0.1 now, but
I haven't let it run long enough to verify that my problem's still there
with this latest version.)
If you can't find a way to get web browser to communicate as expected
with "http://192.168.0.1", then the next step is probably a settings
reset.
Visit http://netgear.com/support , put in your model number, and look
for Documentation. Get the User Manual. Read. Look for "Reset".
Without web-browser access to the thing, you will need to push a pointy
stick into the hole near the power button for several seconds.
If the problem is simply corrupted settings, then that should help.
If the firmware is more seriously corrupted, then there are ways (TFTP)
to try to cram fresh firmware down its throat, but the probability of
ultimate success is less than 100%.
