New Modem 1 Port Need 2+ Will unmanged router slow speeds?

Toggle sidebar Toggle sidebar
S

spike101x

Distinguished
Dec 20, 2008
63
0
18,630
I have a 5 port cable modem with a built in router. It keeps having blips that cause all of my network connections to go down for about 10s. The cable company said everything looks fine on their end, but it may be getting over worked.

Setup

Cable Modem/Router

  • PC
    Wall Jack 1
Wall Jack 1

  • 8 Port Unmanged
8 Port Unmanaged

  • Xbox
    PS4
    TV
    PC
    Printer
    HTPC
    Wall Jack 2
Wall Jack 2

  • Wifi Router
Wifi Router

  • TV
    Ps3
    Misc Wifi Connections

So as you can see here there's a lot of Cat 6 running around. I have my whole house networked. 99% of the time less than 3 of these devices are on.

Now that you have the background I bought a new Motorola SB6141 Modem. I'm hoping this will solve the crashes.The problem is it only has one port instead of 5 like the original modem. Am I right in saying that if you get a 1GB router that it essentially splits the 1GB into several ports? e.g. 5 ports = 200MB each. or does it only do that if there are 5 connections present? I really only need two ports. So what would be the best option? Trying to find a 2 port router or does it even matter?

Thanks for the info!
 
Solution
USAFRet
Your new device is modem only. So you need a router behind that.

Any router with 10/100/1000 ports on the back will work.
The signal speed speaking to the outside world depends on what you pay the ISP for.
Internally, those 5 ports are a switch. All devices, internally, will talk at whatever speed the slowest device is.

If everything in the chain between devices and router is gigabit, that is what they talk at.

2 port router, 5 port router...does not matter.
Sort by date Sort by votes
USAFRet

USAFRet

Titan
Moderator
Mar 16, 2013
171,468
17,926
184,590
Your new device is modem only. So you need a router behind that.

Any router with 10/100/1000 ports on the back will work.
The signal speed speaking to the outside world depends on what you pay the ISP for.
Internally, those 5 ports are a switch. All devices, internally, will talk at whatever speed the slowest device is.

If everything in the chain between devices and router is gigabit, that is what they talk at.

2 port router, 5 port router...does not matter.
 
Upvote 0 Downvote
Solution
S

spike101x

Distinguished
Dec 20, 2008
63
0
18,630


Ah so it doesn't divide? I saw a description of a router that said it divided like that (5 ports 200mb each) So if I understand you correctly if both devices attached to the router are 10/100/1000 they will run @ 1000 if one is 10 they will both run at 10?

 
Upvote 0 Downvote
B

bill001g

Titan
Aug 9, 2012
28,325
2,755
125,640


This is actually a little more complex than that but essentially 2 devices talking will only talk at the slowest speed when you talk about usable throughput. What is actually happening if you have a 1G device and a 10m device both attached to a switch/router is. The data from the gig device flows between the device and the switch at 1G speed. The data is put into a buffer and then is send at 10m speed to the 10m device. So each end device actually runs at it full rated speed and the switch in effect translates the speeds. Now this only works up to a point. The 1g device of course can send so much data that the switch runs out of buffers to store it (generally it will only keep a packet or two). The data then gets discarded. The end device detect this loss and reduce their transmission rates. This reduction is at the software level the actual physical port still runs at 1g.
 
Upvote 0 Downvote
S

spike101x

Distinguished
Dec 20, 2008
63
0
18,630
Now I have a new problem... I bought another TP link unmanaged switch. Which is now plugged into the modem. The PC connected to it works fine, but the other switch connected to it doesn't. They are both TP Link 1GB unmanaged switches (different models). The activity LED on the port from 2nd switch is yellow. The first switch is green, but that's the only color it has.
 
Upvote 0 Downvote
USAFRet

USAFRet

Titan
Moderator
Mar 16, 2013
171,468
17,926
184,590


Given a modem only device, a switch behind that will not work.
The modem serves up one and only one IP address. To serve more than one device, you must have a router.

Modem -> switch -> device only works with one device.
Modem -> router -> switch -> works with multiple devices.
 
Upvote 0 Downvote
S

spike101x

Distinguished
Dec 20, 2008
63
0
18,630


Well there goes $28...ugh...
 
Upvote 0 Downvote
You must log in or register to reply here.

TRENDING THREADS

Latest posts

Moderators online

Share this page

COMPANY
RESOURCES
FOLLOW
Top Bottom