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Failing to connect to router or connect multiple devices at once
My ISP is CAS cable. I've been running firmware V3.02.01. For some time there's been some odd behavior with establishing multiple connections to the modem but overall has been working okay as I've had it directly connected to a router. Today I lost power for about a minute during a storm however, and now it doesn't seem to recognize any connection on any port that my router connects to. The led remains dark. Assuming the issue to be with my router I tried connecting a few devices directly to the modem to have at least a connection in the meantime. With three devices connected to it currently, only one seems to establish a valid IP. Rebooting the modem doesn't seem to help, although sometimes a different device will get the "good" connection. I haven't made any settings changes so everything should be set to default aside from the firmware. Is there anything else I can do or try?
Be sure to swap out LAN cables. CAT6 is recommended.
Power OFF both modem and router for 30 seconds, then power ON the modem then router. Check status on the router. If it still fails, you'll need to conect the mfr of this router for help and support redarding there product.
pchadrow wrote:
Well that explains the multiple device problem I guess. I'm still unsure as to why I can't seem to get it to recognize a connection with the router. With only the router being connected, no LAN ports show any LED activity. The router gives an error that a network cable is unplugged. I've tried using all four of the lan ports on the modem hoping one of the ports may be faulty but none of them register a connection to the router. Any other wired connection to a laptop or desktop is fine, just the router. Is there anything else to try I'm not thinking of or is this more likely a port issue on the router?
7 Replies
What is the mfr and model of the router connected to the modem?
Be sure LAG is disabled on the modem.
Have the ISP check the signal and line quality UP to the modem. Be sure the ISP provisions the modem correctly.
Be sure there are no coax cable line splitters in the between the modem and ISP service box.
Be sure your using good quality RG6 coax cable up to the modem.
Be sure to power OFF the modem for 1 minute then back ON.
https://community.netgear.com/t5/Cable-Modems-Routers/General-info-and-Troubleshooting-for-Cable-Modems/m-p/1530376#M12853Router is a TP-Link AX6000. Signal wise, all is well. If a single device is plugged into the modem it works fine (aside from my router) but trying to connect both my desktop and laptop via ethernet and only one seems to get assigned a valid IP while the other is stuck on "unidentified network"
Also, connection wise it can't get much better. It's connected via a brand new RG6 line that's about 200 ft going directly into the ISPs line from the pole. I've already power cycled it numerous times and various ways and have completely disconnected everything and let it sit for 5 minutes before reconnecting. No changes.
Are you trying to connect other wired devices to the modem? If so, you can't do this. Only 1 device can be connected to the modem and thats your wifi router. The other ports are for other routers however that needs services from yoru ISP which most ISPs only service 1 port, port#1. You would have to ask your ISP if using the other ports is supported or not. You have to connect your other wifi devices to the wifi router for internet services. If there having problems at this point, you'll need to contact the mfr of this router for help and information regarding there product.
> [...] there's been some odd behavior with establishing multiple
> connections to the modem but overall has been working okay as I've had
> it directly connected to a router. [...]
"odd" is in the eye of the beholder.If your ISP has alotted you a single external/public IP address,
which would be typical, then you should be able to connect exactly one
device directly to your modem. If that one device is a NAT router, then
you should be able to connect multiple devices to that NAT router.> Model: CM1200|Nighthawk Multi-Gig Speed Cable Modem
A modem with multiple LAN Ethernet ports doesn't change that.
> [...] only one seems to establish a valid IP [address]. [...]
I'm not amazed.
> [...] sometimes a different device will get the "good" connection.
> [...]First come, first served.
> [...] storm [...] now it doesn't seem to recognize any connection on
> any port that my router connects to. [...]Huh? Which ports on which device? What, exactly, are you connecting
to what, exactly? (Hint: If a device has different types of ports, then
"connected to device" is not enough detail.)"it" the modem, or "it" the router, or what? "recognize"? Does "it"
speak the words "I do not recognize", or are you interpreting some
event(s) in the real world?As usual, dhowing actual actions (commands) with their actual results
(error messages, LED indicators, ...) can be more helpful than vague
descriptions or interpretations.Also, a vague description of what does _not_ happen is less useful
than a clear description of what _does_ happen.> [...] The led remains dark. [...]
_Which_ "The led" on _what_?> [...] Is there anything else I can do or try?
Did you consider trying this radical concept (which works for some
people):https://en.wikipedia.org/wiki/RTFM
Visit http://netgear.com/support , put in your model number, and look
for Documentation. Get the User Manual (at least). Read. Look for the
LED descriptions and "Troubleshoot". Further reading might not hurt,
either.