Networking issues....halp?

Drenlin

Drenlin

Active Member
So...I've been having random internet failures, lasting from 6-8 hours to 3-4 days. Can't figure out why. It happens with both of my modems, and I've replaced every peice of cable between the modem and the one coming into the house. The TV, which comes off of the other side of the splitter(also replaced), does not have the faintest hint of fuzziness. Removing the splitters and connecting the modem does not fix the issue.

The current modem, a SURFboard SB6120, fluctuates at seemingly random, hours long intervals between the following:
-"Receive" light flashing
-Receive light constant, "Send" light flashing
-Send and Receive lights constant, "Online" light flashing

The "Link" light is always on. The other modem, a SURFboard SB5101, behaves in a similar manner.

Suddenlink (yeah, I know...) sent someone to look at it, and he claimed it was the splitters. Upon replacing them and all of the cables in that vicinity, the internet returned, for about four hours. I tried playing with it, reconfiguring the cables a bit, and something I did (no idea what) worked for a couple of days, but it's down again for the 4th time. The cables are all new except the main input from under the house, which had its end cap replaced, and the modem shouldn't be having signal issues since I have it on one half of the splitter and the rest of the house's cable on the other....the only want for a more direct connection is to remove the televisions. (which didn't work)

I'm at a loss. How on earth do I continue troubleshooting this?
 
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I did read your entire post, but I'm not entirely sure if you tried this or not. Have you tried unplugging the modem for 30sec and plugging it back in?

You also said you tried directly connecting to the modem (ie no splitters), correct?
 
Yes and yes, with both modems. Though I haven't tried the first modem since they swapped everything...I got them to change the account to this one at the same time. I think we've ruled out the modem though...?
 
Did this just randomly start happening one day?

Also are your devices' IPs set dynamically or statically?
 
Yes, and I have no idea...typically it's dynamically though isn't it? I'm no networking whiz...
 
Devices are almost always set dynamically by default.

Have you considered buying a switch instead or is that what you're referring to when you say splitter?
 
Ah...yeah, it's dynamic then.

I was referring to a coax splitter:
SP2532.jpg


I'm not sure how a switch would help...?
 
Drenlin said:
Ah...yeah, it's dynamic then.

I was referring to a coax splitter:
SP2532.jpg


I'm not sure how a switch would help...?
Click to expand...

Oh wow, I was thinking you were splitting the ethernet cables. I was trying to figure out how that could ever work, hence the switch suggestion, but a coax splitter makes MUCH more sense :P

No, the splitter shouldn't be the problem, I probably have about 5 splitters set up on mine.

What exactly does your network look like. Here's what I got:

ISP->Coax Splitter->One goes to TV, other goes to modem->then?..
 
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