MYSTERY!!! R6900P loses ethernet connectivity. Wifi is fine.

[ilotsmas]

Location: Home

Firmware Version
V1.3.2.134_10.1.66

Hi.  I am by no means a LAN expert but this is just baffling to me and above my level of comprehension.  After 5 plus years of flawless ethernet and wifi connectivity, my system crashed.  Spectrum was out and 'fixed' something on their end which got the wifi back up, but one the ethernet cable was connected to the switch (all the same equipment for 5 plus years), all hard-wired/ethernet connections fail.  I am at a complete loss as to what is causing this.

I had an IT company out and they managed to get it back up and running for a day or so.  They told me i had created a loop by using multiple switches (which makes sense but doesn't).  I have NOT reconnected anything he pointed out, but after trying to connect my security DVR directly to the main switch in the 'equipment' room, the ethernet connects are no more.

What do i need to do to figure this out?  What do i need to share for someone to help me figure this out.  I love my hard-wired devices. They have stable connectivity and reduce wifi traffic.

Thank you in advance.

[ilotsmas · Accepted solution]

Morning!  I THINK I fixed it.  After the hard reset, i noticed the switch was no longer lighting up.  I replaced the switch and so far so good! Fingers crossed that the switch was throwing everything off.

Thanks everyone!

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[FURRYe38]

What is the Mfr and model# of the Internet Service Providers modem/ONT the NG router is connected too?

Has a factory reset and setup from scratch been performed since last FW update?

[ilotsmas]

Hi. I didn't realize i needed to reset it.  I will try that this evening and hope it doesn't cause more issues (I work from home).

Sectrum Modem is an Arrus TM1602A

[FURRYe38]

Id power OFF the ISP modem for 1 minute as well when you reset the router. 

[plemans]

so you didn't give us much more to your system than you have a Arris RM1602a and a R6900P. You put you had a network loop going with switches/etc. 

If its just the arris and the netgear, do wired and wireless devices work? 

You should always start back at basics and first get the modem working, then get the router working, then connect devices to the router (not switches/managed switches) and see if they work. 

where are you at in that process?

[ilotsmas]

Hi.I haven't forgotten this. The week got away from me but I will try the hard reset this afternoon. Thanks for the feedback. 🙂

[ilotsmas · Accepted solution]

Morning!  I THINK I fixed it.  After the hard reset, i noticed the switch was no longer lighting up.  I replaced the switch and so far so good! Fingers crossed that the switch was throwing everything off.

Thanks everyone!

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[plemans]

Glad you got it working!