Separate Internet Connections via Cable

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dread.spawn

Aug 15, 2018
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Background: I have been renting a room in a house long term. The home owner provides internet via a wifi network. (I pay a percentage of this in addition to other utilities.) He messes with the modem/router settings on a semi regular basis and as a result the internet has become unstable. Multiple disconnects per hour, game servers I can't connect to, and difficulty streaming video via services such as Amazon or Youtube. I believe I have exhausted diplomatic options without resorting to outright conflict I wish to avoid. While having the issues with the internet already in place resolved would be ideal, spending an additional $45 to $105 a month is an acceptable solution to me. There is a cable outlet in my room.

I am considering purchasing a completely separate internet package via the same provider (TWC) as the home owner uses. My questions are as follows.

Can two modems with different accounts be used on the same cable line?

If so will it effect the speed of either connection while both are being utilized? (200Mbps connection)

If it does effect the speed of either or both to what extent? I am considering using TWC's 400Mbps or 940Mbps package instead of the standard 200Mbps package.

If the same line can't be used, with it being a residential home, would TWC be willing and able to run a second line?

Could I use a completely different ISP via cable? (I have not had good experiences with ADSL or dish. Latency and reliability are a priority for me.)

Thanks for your consideration and responses.

Edit: Completely forgot to ask, can a second modem be run on the same account/line?
 
Solution
J
Typically, ISPs won't run two broadband connections to a residential home unless you have a business & a residential account to differentiate the two. The problem is not with overall bandwidth, but with how the Provider has their public IP schemes, i.e. only DHCP for residential and no possibility for adding a business connection to your residence, like Cox.

You would probably need to contact TWC & specifically ask if they could run another line. Odds are they won't.

To answer the bandwidth question. If you were to get another line installed & had two separate connections at that residence, unless they were bonded, TWC would treat them as two separate residences. If there is a splitter at the wall, this isn't two separate connections...
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jdcranke07

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Feb 10, 2014
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Typically, ISPs won't run two broadband connections to a residential home unless you have a business & a residential account to differentiate the two. The problem is not with overall bandwidth, but with how the Provider has their public IP schemes, i.e. only DHCP for residential and no possibility for adding a business connection to your residence, like Cox.

You would probably need to contact TWC & specifically ask if they could run another line. Odds are they won't.

To answer the bandwidth question. If you were to get another line installed & had two separate connections at that residence, unless they were bonded, TWC would treat them as two separate residences. If there is a splitter at the wall, this isn't two separate connections as I'm sure you're aware.

All said and done, be aware if they have to install a new line, you or the owner will have to pay for said installation, which could cost a lot depending on how far you are from either the node or Central Office.
 
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jsmithepa

jsmithepa

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Jun 14, 2014
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In some locale, you have 2 coax coming into the house, some old cable TV systems ran with 2 coax cables, is been outdated by now, but that other coax maybe just hanging there, you will have to look at your junction box and find out whether that's the case.
 
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jdcranke07

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Feb 10, 2014
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Update: You can have two accounts on a single run to the residence w/ a splitter. The problem is, found w/ a Cox connection I was troubleshooting today, the two connections were stealing from each other's bandwidth. This was even w/ one being a 100M x 10M residential connection & the other being a 10M x 2M business connection. In the end, splitters are just another point of failure & cause more problems. They are only a convenience to the tech installing them.

No, you cannot have two modems (ISPs refer to these as CPE devices) on one acct or connection, unless you are bonding connections. The CPE is only used to modulate the signal from optical fiber signals or electrical copper signals to data that streams over ethernet cables. If the ISP does MAC binding, then you would have that type of authentication as well on the CPE. Otherwise, your acct authentication will more than likely be plugged into your router or routing portion of a modem/router combo device.
 
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