NTL Cablemodems and hubs
Douglas Meta
and it should work fine. However I'd like it to connect to my hub and then
to my main pc that way. Does anyone know if the NTL Digital cablemodem/tv
box supports this ?
I've been told that officially it doesn't but unofficially it should work.
steve cole
"Douglas Meta" <dougla...@tiscali.co.uk> wrote in message
news:3c02b...@mk-nntp-1.news.uk.worldonline.com...
If ntl are anything like blueyonder , then they will not support a network.
However , that doesn't mean it won't work providing you install it
correctly. Just keep it to ourself though :-)
phoenix
dougla...@tiscali.co.uk says...
Yes, of course, it works. NTL probably told you they don't support it.
Many NTL customers use a LAN with the STB & the modem version. Have a
look at the forum at this site http://www.cable-modems.co.uk/ for help
in setting it up.
Regards
Bill
kraftee
"phoenix" <pho...@FakeAddress.uk.com> wrote in message
news:MPG.166d8571d...@news.blueyonder.co.uk...
Sorry it doesn't/won't work!!!!!
You will need to connect it to a router/server to run it over a LAN.
The reason for this is that NTL only supply one IP on your circuit
(yes I know that some of the kit they use can supply more but NTL
remote configure them to only produce one & then tie that to the first
MAC it see's). If you do plug your device into a hub it'll be pot
luck which one (normally the first one to be switched on) will gain
access, if any do.
NTL (like most ISP's) do not support networking their home user
service, but they (NTL) do not actively do anything to stop you (other
than only providing the one IP). Once you get your head around how to
get around that problem the world is your oyster.
--
B-)
Grumps II...you know you're old when the latest granddaughter has more
hair than you!!!
skunk
news:3c02b...@mk-nntp-1.news.uk.worldonline.com...
Nope, you can't connect the STB directly to the hub. I'd assume its because
the hub doesn't have a DHCP client in it. You have two options :
1. Set up a server machine with 2 network cards in, one for STB and one for
LAN.
2. Buy a broadband router. Loads available nowadays and getting cheaper
too.
Neil Davies
Oh yes it does !
I am in the Surrey franchise using an old 3com cablemodem.
I have 1 PC virtually dedicated to acting as a Gateway machine, this has 2
NIC's in it. One for Cablemodem traffic (via the NTL allocated IP address)
and the other for LAN traffic (using IP addresses that I have allocated) via
a Hub.
In general it works very well, it is wise to use 2 different brands of NIC's
for this (it'll make more sense when you do it). I use ICS on Win98se (ICS =
Internet Connection Sharing) although there are other NAT's available for
this task (i.e. WinGate seems to be highly recommended).
The site mentioned earlier http://www.cable-modems.co.uk/ should tell you
everything you need to know, on the main page select the "How to.." link and
then choose "A quick guide to Internet sharing using a PC".
phoenix
kra...@invalidntlworld.com says...
LAN will work. Sorry for the confusion.
Regards
Bill
Robin Fairbairns
>"Douglas Meta" <dougla...@tiscali.co.uk> wrote ...
>> Well from what I understand I can connect the digital box to a network
>card
>> and it should work fine. However I'd like it to connect to my hub and then
>> to my main pc that way. Does anyone know if the NTL Digital cablemodem/tv
>> box supports this ?
>>
>> I've been told that officially it doesn't but unofficially it should work.
>
>Nope, you can't connect the STB directly to the hub. I'd assume its because
>the hub doesn't have a DHCP client in it.
actually, this isn't true. the hub is a passive device, and will pass
on your machine's broadcast dhcp request.
so one could have an n-port hub, with 2 ports connected to the cmodem
and the other to the machine you want to connect to the cmodem. there
are then n-2 ports for a lan in which neither the cmodem nor the
machine connecting to it participate.
this isn't a sensible option, but it will work. so...
>You have two options :
>
>1. Set up a server machine with 2 network cards in, one for STB and one for
>LAN.
>
>2. Buy a broadband router. Loads available nowadays and getting cheaper
>too.
this is all true.
--
Robin Fairbairns, Cambridge -- rf10 at cam dot ac dot uk
kraftee
"Neil Davies" <nospam_n...@ntlworld.com> wrote in message
news:9u1531$chu$1...@newsreader.mailgate.org...
> > Sorry it doesn't/won't work!!!!!
>
> Oh yes it does !
>
> I am in the Surrey franchise using an old 3com cablemodem.
> I have 1 PC virtually dedicated to acting as a Gateway machine, this
has 2
> NIC's in it. One for Cablemodem traffic (via the NTL allocated IP
address)
> and the other for LAN traffic (using IP addresses that I have
allocated) via
> a Hub.
The original poster was putting both the PC's & the CM into the hub,
not using one PC as a server.
If you had bothered to actually read what the original poster had
written & read my posting in it's entirety (I actually stated that he
would require a router/server) then you wouldn't shoot yourself in the
foot so much.
Try reading before posting it's educational :-)
Zane Wilson
Robin Fairbairns <r...@pallas.cl.cam.ac.uk> wrote:
>actually, this isn't true. the hub is a passive device, and will pass
>on your machine's broadcast dhcp request.
>
>so one could have an n-port hub, with 2 ports connected to the cmodem
>and the other to the machine you want to connect to the cmodem. there
>are then n-2 ports for a lan in which neither the cmodem nor the
>machine connecting to it participate.
>
>this isn't a sensible option, but it will work. so...
Once more, with feeling:
The above works, and you can run a home network on it.
<ASCII ART>
+-----------+
|Cable Modem|
+-----------+
|
+-----------------------+
| H U B |
+-----------------------+
| | |
+---+ +---+ +---+
|PC1| |PC2| |PC3|
+---+ +---+ +---+
</ASCII ART>
Use DHCP on PC1 to obtain an IP address from ntl:, then bind a second IP
address eg 192.168.0.1 to PC1's NIC. Add a route to it:
Destination Gateway Genmask
192.168.0.1 * 255.255.255.255
62.253.115.0 * 255.255.255.0
192.168.0.0 * 255.255.255.0
127.0.0.0 * 255.0.0.0
default 62.253.115.0 0.0.0.0
(62.253.115.127 is the DHCP'd IP address).
Allocate 192.168.0.2 and .3 to the other PCs (whether via dhcpcd or
statically). Enable IP masquerading on PC1. Voila - PC2 and PC3 can access
the 'net via PC1, with one NIC in each machine and a hub that all the
machines and the cable modem plug into.
Note of course that the router is still required (PC1), it's just that you
don't need to do what most people think, which is:
<ASCII ART>
+-----------+
|Cable Modem|
+-----------+
|
+---+
|PC1|
+---+
|
+-----------------------+
| H U B |
+-----------------------+
| |
+---+ +---+
|PC2| |PC3|
+---+ +---+
</ASCII ART>
Why does this work? Why does a whole lot of traffic between the PCs not go
up the cable modem route and saturate the upstream? Simply because the
cable modem is an associative bridge - it learns what MAC addresses are on
either side of it. ntl: limits the modem to only learn a single MAC
address, so though the cable modem sees traffic from PC2 and PC3, it
ignores it. Caveat: the first traffic the cable modem sees on bootup MUST
be from PC1 otherwise it will learn the wrong MAC address.
Note: this works on ntl:. Not sure about BlueYonder.
Zane.
Roger Pfister
Yes it's OK but
IMO much better is
<ASCII ART>
+-----------+
|Cable Modem|
+-----------+
|
+------+
|router| eg netgear rt314
+------+
|
+-----------------------+
| H U B |
+-----------------------+
| | |
+---+ +---+ +---+
|PC1| |PC2| |PC3|
+---+ +---+ +---+
ITs is an unbreachable firewall and no PC
need to be up to give network access to any other
works 100% here.
--
Roger
In article <9u3hgp$m27$1...@albert.wilson.st>, Zane Wilson wrote:
> From: ab...@NOSPAMwilson.st (Zane Wilson)
> Newsgroups: uk.telecom.broadband
> Subject: Re: NTL Cablemodems and hubs
> Reply-To: ab...@wilson.st
> Date: 28 Nov 2001 20:30:17 -0000
Zane Wilson
Roger Pfister <ro...@rpsd.net> wrote:
>ITs is an unbreachable firewall and no PC
>need to be up to give network access to any other
>works 100% here.
Yes, but where would you run file/print/firewall/imap services from then?
:-)
Zane.