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Questions tagged [cable-modem]

A type of network bridge that provides bi-directional data communication via radio frequency channels on hybrid fibre-coaxial (HFC aka CATV) infrastructure.

200 questions
24
votes
9 answers

Is it possible for a router to "go bad" with time?

I've been having problems with my internet connection over the past weeks (intermittent disconnections, slow transfers, etc), and my provider keeps telling me that the problem is not on their end. I have cablemodem with a wifi router (this router…
juan
  • 785
15
votes
1 answer

Why simply moving the coax cable away from power panel can have such huge difference in errors?

I wonder whether anyone has experienced this. My coax cable drop from the cable company emerged through my basement wall close to my power circuit breaker panel. Initially I hooked up the coax cable directly to my cable modem (Motorola MB8600) as…
GratefulDisciple
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15
votes
3 answers

Is there a reason to get DOCSIS 3.1 cable modem for one's house?

It seems that most cable modems on the market today are DOCSIS 3.0 (ex). However, "recently" (2013), DOCSIS 3.1 was announced. I'm assuming (perhaps incorrectly) that as of now, finding DOCSIS 3.1 cable modem is either hard, or more expensive, given…
DVK
  • 700
13
votes
5 answers

What is the cable that runs from the cable modem to a wall outlet

I was wondering what type of cable runs from the modem to the wall outlet in my house? Is it a coaxial cable? I'm very confused by what I've read around the internet. There seem to be many variations. Some talk of HFC and others just refer to copper…
user447436
9
votes
1 answer

DNS Suffix Explanation

First question here. I had a problem with my Internet provider's modem, model Sagecom F@st 3890v3. The problem was that it pointed the device DNS Suffix to utopia.net Comcast had this problem (utopia.net hijack), now my Internet Provider is having…
Dan Chelger
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8
votes
1 answer

How to connect a wifi router to a cable modem router?

Here's the thing: I have a cable modem router (Thomson TCW710) with wifi-g that I rent from my cable company. I would like to use a wireless-n router (D-Link DIR-655, that I received for free) with it in order to take advantage of the faster wifi. I…
DavidD
  • 425
7
votes
7 answers

Why is it so hard to connect with a cable modem and router?

I've gone through various combinations of cable modems, routers, computers, and apartments in my life, and one thing has always puzzled me. Why is it so difficult to get these things to connect to the internet? Once I'm connected, they work great,…
JW.
  • 78
6
votes
3 answers

How to determine mac address of a modem on Windows 7?

For a validation process I need to know the MAC address of a cable modem. (I do not need to know the MAC address of the network adapter.) The cable modem though is placed somewhere hardly accessible, so I want to avoid physically touching it to read…
k0pernikus
  • 2,652
6
votes
3 answers

Home network with two isolated separate subnets, running on cablemodem/router and WRT-router

I have a new connection with a nice new router/cable-modem. I'd like to setup it up optimally and needs some pointers. I am a complete n00b when it comes to routing. I want to end up with two separate subnets, 10.1.2.0/24 and 192.168.1.0/24 each…
Johan Allgoth
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6
votes
6 answers

Why is my router not routing?

Starting a week and half ago my router stopped working with my cable modem. I went to sleep with it working and woke up with it not. I swapped in another router and am still having issues; I was gone for 10 days so now I'm back to trying to figure…
dwj
  • 1,444
5
votes
4 answers

Slow Internet speed when HomePlug combined with router

I'm using HomePlug AV2 600 devices to connect upstairs with downstairs (router is downstairs). A check with iperf shows bandwidth of ~100Mbps, and data transferred on the local network from downstairs to upstairs is transferred at about that speed.…
Cocowalla
  • 312
5
votes
1 answer

What makes for a good cable modem?

I'm tired of renting my cable modem and am wondering how to tell them apart. Some are 1/2 the price of others yet they all seem the same. What are the criteria one should look for when purchasing a cable modem.
Matt
  • 6,539
5
votes
1 answer

Why does a running ping process keep working during an internet outage, but restarting ping doesn't?

For the last few months, I'm struggling with regular internet outages, affecting all devices on my local network, forcing me to power cycling my cable modem. Today I noticed that I can reproduce this issue - or a similar one with the same symptoms -…
stuXnet
  • 265
4
votes
3 answers

Can MoCA be used behind a wired router?

We have Comcast cable internet, and we want to connect two devices: one WiFi router, and one PC via a wired connection. We have these all set up in the same room and it basically works: wall --coax--> cable modem --cat5--> (WAN) wifi router (LAN)…
David Moles
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4
votes
3 answers

URL to reboot a WebSTAR DPC2100R2 cable modem with curl?

Does anyone know what the magic URL is for rebooting a WebSTAR DPC2100R2 with curl? I used to have a SurfBoard, and the curl command: curl http://192.168.100.1/reset.htm?reset_modem=Restart%20Cable%20Modem Would reset the modem. Sure, I can go…
jtimberman
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