Setting up Wi-Fi router with ADSL modem

I have an ethernet ADSL modem, that will be replacing the PCI modem that is
installed on one of the PCs on my network.
This PC acts as the default gateway, and I had to specify the DNS address
for my ISP.

All the other PCs on the network have their own IP address 192.168.123.xy,
and there is a box for the IP address of the default gateway, (which is the
PC with the PCI ADSL modem.)
The Subnet mask for all the PCs is 255.255.255.0

The WiFi/Wired router has the IP address of 192.168.123.abc , which is why
all the PCs have the first part of the IP address 192.168.123.**

I know that the ADSL ethernet modem will plug into the WAN port of the
WiFi/Wired router.

I know that there will be a screen where I have to input things like
username, password, and primary and secondary DNS servers.

What I want to know is how can I configure the Ethernet modem and router so
I can share the net without the PC with the ADSL modem being on all the
time.

I assume that I will have to change the default gateway IP address on all
the PCs so it points to either the WiFi/Wired router or the Ethernet modem,
but I'm not sure which.

Thanks for your help.

(E-Mail Removed) declared for all the world to hear...
> What I want to know is how can I configure the Ethernet modem and router so
> I can share the net without the PC with the ADSL modem being on all the
> time.

Yes. As long as the router and the ADSL modem remain powered you're
laughing.

> I assume that I will have to change the default gateway IP address on all
> the PCs so it points to either the WiFi/Wired router or the Ethernet modem,
> but I'm not sure which.

You'll probably find that the router will do that for you if you leave
all the PCS to have auto-assigned IP addresses (DHCP) rather than
specifying them manually.
--
Regards
Jon

"Jon" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> (E-Mail Removed) declared for all the world to hear...
>> What I want to know is how can I configure the Ethernet modem and router
>> so
>> I can share the net without the PC with the ADSL modem being on all the
>> time.
>
> Yes. As long as the router and the ADSL modem remain powered you're
> laughing.
>
>> I assume that I will have to change the default gateway IP address on all
>> the PCs so it points to either the WiFi/Wired router or the Ethernet
>> modem,
>> but I'm not sure which.
>
> You'll probably find that the router will do that for you if you leave
> all the PCS to have auto-assigned IP addresses (DHCP) rather than
> specifying them manually.
> --
> Regards
> Jon

Ok. There is an option on the Wifi/wired router that says DHCP on/off.

I did a search for it, and it was way too technical. it probably explains
why when I set it to "enable" it didn't work as I had already asigned an IP
address.

On 06/08/2005 BDA wrote:

> Ok. There is an option on the Wifi/wired router that says DHCP on/off.
>
> I did a search for it, and it was way too technical. it probably
> explains why when I set it to "enable" it didn't work as I had
> already asigned an IP address.


It's one of those things that looks worse than it is :-)

If you enable it then set each PC to obtain an IP address automatically
then you can forget it. Also means that you can just add additional
PC's in the future as you expand your network.

--
Jeff Gaines - Damerham Hampshire UK
Using XanaNews 1.17.5.7

On Sat, 6 Aug 2005 08:04:19 +0100, "BDA" <(E-Mail Removed)> wrote:

>Ok. There is an option on the Wifi/wired router that says DHCP on/off.

there may/should be two - a router can be a DHCP server (for client
PCs) but can also have a DHCP client on its WAN port.

These ADSL ethernet modem / router combos are non-trivial and may be
specific to the devices concerned, so name the kit please (others may
have experience).

In general terms I would say that the router will initially get a
local IP address on its WAN interface allocated by the modem by DHCP.
This will be different to your LAN IP addresses in order for it to
route from LAN to WAN.

When you have setup the ethernet modem, which will initially also
present an internal IP address to the router, the external IP address
will be negotiated and passed to the router if the modem is to work in
a transparent fashion.

You'll have to sit and RTFM for the devices concerned, be aware that
not everything is compatible - there are combos of modems and routers
which simply don't work. Good Luck !

Which is why smart-arses like me usually say "buy a combined ADSL
modem/router" :-)

Phil
--
Remember - Global Warming is only a weather forecast :-)

"Phil Thompson" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> On Sat, 6 Aug 2005 08:04:19 +0100, "BDA" <(E-Mail Removed)> wrote:
>
>>Ok. There is an option on the Wifi/wired router that says DHCP on/off.
>
> there may/should be two - a router can be a DHCP server (for client
> PCs) but can also have a DHCP client on its WAN port.
>
> These ADSL ethernet modem / router combos are non-trivial and may be
> specific to the devices concerned, so name the kit please (others may
> have experience).
>
> In general terms I would say that the router will initially get a
> local IP address on its WAN interface allocated by the modem by DHCP.
> This will be different to your LAN IP addresses in order for it to
> route from LAN to WAN.
>
> When you have setup the ethernet modem, which will initially also
> present an internal IP address to the router, the external IP address
> will be negotiated and passed to the router if the modem is to work in
> a transparent fashion.
>
> You'll have to sit and RTFM for the devices concerned, be aware that
> not everything is compatible - there are combos of modems and routers
> which simply don't work. Good Luck !
>
> Which is why smart-arses like me usually say "buy a combined ADSL
> modem/router" :-)
>
> Phil
> --
> Remember - Global Warming is only a weather forecast :-)


Wi-fi router is
http://www.safecom.cn/code/sub/categ...158&subcatid=2

Modem is BT Voyager 205 http://www.voyager.bt.com/205/prodinfo.htm

I already had bought the Wifi router in Dec for ~£25. So just decided to buy
an Ethernet modem.
The master BT socket is in the cloakroom. I wanted to connect the Ethernet
modem to this socket.
The wire that brings ADSL into my room was a DIY job that I did back in
1996. I found the wire at my grans house. The wire is really thin, its not
really outdoor telecom wire. However when BT upgraded my exchange to 2Megs,
I did notice an improvement in speed.

I was going to go for the combo option, but WiFi access from the cloakroom
would be poor.

On Sat, 6 Aug 2005 13:25:34 +0100, "BDA" <(E-Mail Removed)> wrote:

>So just decided to buy
>an Ethernet modem.

but you didn't, you bought a 2-port ADSL modem-router. Will think
about the consequences after looking at the other kit.

Phil
--
Remember - Global Warming is only a weather forecast :-)

On Sat, 6 Aug 2005 13:25:34 +0100, "BDA" <(E-Mail Removed)> wrote:

>I was going to go for the combo option, but WiFi access from the cloakroom
>would be poor.

OK. The wireless thing says "Can work as a wireless Access Point" so
the best course of action is for you to find out how to do that, then
plug its WAN port into the ethernet port of the Voyager 205.

Set it to get an IP address on the WAN port by DHCP (which will come
from the Voyager)

Turn off the Wireless units DHCP server, the clients should get passed
through to the 205.

the manuals aren't on line so you'll have to work through them with
the above hints.

Phil
--
Remember - Global Warming is only a weather forecast :-)

"Phil Thompson" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> On Sat, 6 Aug 2005 13:25:34 +0100, "BDA" <(E-Mail Removed)> wrote:
>
>>So just decided to buy
>>an Ethernet modem.
>
> but you didn't, you bought a 2-port ADSL modem-router. Will think
> about the consequences after looking at the other kit.
>
> Phil
> --
> Remember - Global Warming is only a weather forecast :-)

Yes, I bought it becuase of the ADSL modem. Its very hard to find a true
ADSL ethernet modem.
What I want to do is turn the router off, and just use the ethernet port to
link to the WAN of the Wifi router.

On Sat, 6 Aug 2005 14:37:56 +0100, "BDA" <(E-Mail Removed)> wrote:

>What I want to do is turn the router off, and just use the ethernet port to
>link to the WAN of the Wifi router.

I would advise the opposite, and turn the wifi router into an access
point.

I say this because the 205 isn't configured to provide "modem only"
functions (though it may be possible at a command line level)

it may be possible to run them together with the wifi getting its IP
address by DHCP from the 205. Try it and see. You need to ensure they
default to differnet ranges eg 192.168.0.1 on one and 192.168.1.1 on
the other (for instance)

Phil
--
Remember - Global Warming is only a weather forecast :-)