Router and ADSL modem running together?

DavidNW

DavidNW

Big Geek
My main PC (Linux) is in my upstairs bedroom. I use a router (which is placed under the PC's desk) to connect to the internet. I am awaiting delivery of a laptop (Windows) that I will mainly be using in my downstairs living room.

I had thought of getting a Cat 5 cable and running it from the router (upstairs) down the stairs and into the living room and hook it up to the laptop for internet access.

However, I still have my old ADSL SpeedTouch 330 modem (which I used before I had the router). I was thinking it might be easier to just run a short RJ11 modem cable from the hallway telephone micro filter into the living room - plug in the ADSL modem and then hook that up to the laptop for net access.

If I did this, it would mean that 2 devices (the router and the ADSL modem) would effectively both be using the same telephone line, albeit via seperate telephone extensions.

I think it should work fine, but does anyone think there might be a loss of signal strenght/performance - say if the main PC and the laptop were accessing the internet at the same time?

Cheers,


David
 
David said:
I think it should work fine
Click to expand...
yes it will work
David said:
performance
Click to expand...
not sure, but i think you may be restricted in download performance, similar to adding another PC to an RJ45 socket on your router

Edit:[ot]i think it's called "daisychaining" but i think that term usually refers to using more than 1 router on the same telephone line[/ot]
 
hey , i thought for one you needed a modem for a router ...... well internet for the router but that really defeats the purpose

ok , i think you have a gateway (modem/router) so i am near positive that having two modem on one dsl service is not feasible , so youll have to think again .

Wireless? , most laptops will have it bulit right in ,and you have a router so all you need is acess point . which is 20-30 dollars ,and i would think a new laptop would have a wireless card bulit in if not there 20 -30 usd
and you cna use a laptop to its full purpose .......... MOVING IT ....

lol its pretty fun
 
DavidNW said:
My main PC (Linux) is in my upstairs bedroom. I use a router (which is placed under the PC's desk) to connect to the internet. I am awaiting delivery of a laptop (Windows) that I will mainly be using in my downstairs living room.

I had thought of getting a Cat 5 cable and running it from the router (upstairs) down the stairs and into the living room and hook it up to the laptop for internet access.

However, I still have my old ADSL SpeedTouch 330 modem (which I used before I had the router). I was thinking it might be easier to just run a short RJ11 modem cable from the hallway telephone micro filter into the living room - plug in the ADSL modem and then hook that up to the laptop for net access.

If I did this, it would mean that 2 devices (the router and the ADSL modem) would effectively both be using the same telephone line, albeit via seperate telephone extensions.

I think it should work fine, but does anyone think there might be a loss of signal strenght/performance - say if the main PC and the laptop were accessing the internet at the same time?

Cheers,


David
Click to expand...

Sorry to say but, Its not going to work (if you wanna connect both computers to the internet simultenously). Your best bet is to connect your lappy to the router, wired or wireless. (I think this is your plan)

But if your plan is to connect each computer to the net one at a time, this will work provided that you disconnect the router before powering up the adsl modem and vice versa.
 
thoonie said:
Sorry to say but, Its not going to work (if you wanna connect both computers to the internet simultenously). Your best bet is to connect your lappy to the router, wired or wireless. (I think this is your plan)

But if your plan is to connect each computer to the net one at a time, this will work provided that you disconnect the router before powering up the adsl modem and vice versa.
Click to expand...

Thoonie, you are so right - it did not work. Could not figure it out at first!
 
Yup you can do that with multiple routers but the topology would be linear.
Its like cascasding workgroup.
Code: 
adslmodem --------------router1 ------------ router2/switch
                        |      |                 |      |
                       pc1   pc2                pc3     pc4

Router2 would act only as a switch.
 
thoonie said:
Yup
Click to expand...
sorry for the stupid question, but, personally i have a router with a built in modem, how would that work ?[ot]i presume you would just ignore the fact that 1 (or more) router in the chain already has a modem, is my presumtion correct ?[/ot]
 
Code: 
router1-w-modem ------------ router2/switch
 |      |                      |      |
pc1   pc2                     pc3   pc4

router2 can be an adslmodem/router or just a router or switch, it doesnt matter, you can use it but it will only act as a switch. But for home networking, that topology is expensive :P .
 
donkey42 said:
well, David has this router with a built in modem
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cant keep up , I meant that he said router and than talked about his modem as a complete different thing but in real life they are always connected , I was under the impression as he worded it that he was a router and that was it ,so it sounded like he had a gateway
 
OJ said:
I meant that he said router and than talked about his modem as a complete different thing but in real life they are always connected
Click to expand...
yeah, but nowadays a router usually includes a
  • Modem
  • Firewall
  • Gateway
  • 3 / 4 / 5 Port Switch
OJ said:
I was under the impression as he worded it that he was a router and that was it, so it sounded like he had a gateway
Click to expand...
he does have a gateway built in

BTW: his router
 
Okay, guys.

Thanks to Thoonie's imput I'm practically sorted. At this point in time, All I have to do is power-off the router upstairs and the ADSL modem downstairs will, of course, connect the laptop to the Internet - great!

I try to re-explain things for the sake of clarity;

I could of course, have run a CAT 5e cable from my router upstairs and hooked it up to the laptop (downstairs). Albeit that woud have been a practical and simple way to get Internet access on the two PCs - the cable run would have been difficult due to the layout of carpeting, staircasing, etc.

I had my old SpeedTouch 330 ADSL modem, so I thought I'd just connect that to the main telphone socket in the hallway - which is only a very short distance from the living room and any cabling is easily concealed and so looks neat. What I had not bargained for, was that a router and an ADSL modem can not both access the Internet at the same time using the SAME telephone line!

So, after a little experimentation, I found all I had to do if I just wanted to get Internet access for the laptop, was to disconnect the router upstairs.

However, ultimately, I suppose my best way of doings things would be to get a wireless router which will also work with the wireless card in my laptop.

I'm going to make some enquires with my ISP provider (Virgin) and see if they can come up with a package. Why do I think it's going to be expensive? :rolleyes:

I'm also a bit wary of wireless as security issues have been raised around the forums and via the media.
 
David said:
Virgin
Click to expand...
you don't happen to know Virgin Broadband's helpline number do you ?[ot]all i have is an 0800 number which is a recorded message that gives out 09 numbers (v v expensive)[/ot]
 
donkey42 said:
yeah, but nowadays a router usually includes a
  • Modem
  • Firewall
  • Gateway
  • 3 / 4 / 5 Port Switch
he does have a gateway built in

BTW: his router
Click to expand...



ok , router built with that are standard in the US I live in the US so I guess thing are different because I have 15 friends not to mention people I saw with router with the modems on the outside because our isp give modems for free once tds offered a gateways for 25 dollars but they are is in the US so I am going on from what I have experienced with , also to tell you my ISPs have told me you CAN NOT run two modems from one DSL line , unless you unplug one when your not using it

but maybe your magic ,if so hook me up
 
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