One Gateway, Two Networks

  • Thread starter Thread starter John
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J

John

Hi there,

Can anyone point me towards a good article on how to setup two separate
networks from one broadband gateway router?

Background - I'm moving to a shared office, where they already have a
speedtouch broadband gateway with four ethernet ports (and I think a dynamic
IP address). I've been using a similar setup in my previous office with a
Netgear DG824M gateway router. Both of us have been sharing our various
folders on our networks, but now we we'll be sharing, I'd rather set us up
so that we can separate our two networks.

So what's the best approach? My networking knowledge is limited so far to
basic stuff (ie I know what NAT and POTS means but not how to set it up) and
so could do with some kind of walkthrough.

Hope I've been clear with what I'm trying to achieve!

Thanks in advance and best regards

John

PS - Both sets of PCs are using WinXP (mine are Pro, not sure yet what the
other are)
 
You could do this with a typical Internet router. However, I believe that a
DG824M is a modem/router. It may be that the onlly WAN/Internet port on
this device is for a DSL line rather than an ethernet connection. If so,
the only available connection to the Speedtouch is a LAN port - this would
put your machines on the same network. A quick visual check of this device
should confirm whether I am correct.

Doug Sherman
MCSE, MCSA, MCP+I, MVP
 
"John" said:
Hi there,

Can anyone point me towards a good article on how to setup two separate
networks from one broadband gateway router?

Background - I'm moving to a shared office, where they already have a
speedtouch broadband gateway with four ethernet ports (and I think a dynamic
IP address). I've been using a similar setup in my previous office with a
Netgear DG824M gateway router. Both of us have been sharing our various
folders on our networks, but now we we'll be sharing, I'd rather set us up
so that we can separate our two networks.

So what's the best approach? My networking knowledge is limited so far to
basic stuff (ie I know what NAT and POTS means but not how to set it up) and
so could do with some kind of walkthrough.

Hope I've been clear with what I'm trying to achieve!

Thanks in advance and best regards

John

PS - Both sets of PCs are using WinXP (mine are Pro, not sure yet what the
other are)
Click to expand...

For complete isolation between the two networks, while giving Internet
access to the computers on both networks, use two more broadband
routers.

Connect the WAN (Internet) port on each additional router to a LAN
port on the Speedtouch gateway router. Connect the first business'
computers to LAN ports on the first additional router. Connect the
second business' computers to LAN ports on the second additional
router.
--
Best Wishes,
Steve Winograd, MS-MVP (Windows Networking)

Please post any reply as a follow-up message in the news group
for everyone to see. I'm sorry, but I don't answer questions
addressed directly to me in E-mail or news groups.

Microsoft Most Valuable Professional Program
http://mvp.support.microsoft.com
 
Thanks to you and Doug for your help. Are you able to point me towards a
product & walkthrough that would take me through it?

Thanks again

John

PS - Yes, Doug you're right, they only have four LAN ports and a telephone
style plug for the broadband.
 
"John" said:
Thanks to you and Doug for your help. Are you able to point me towards a
product & walkthrough that would take me through it?

Thanks again

John
Click to expand...

You're welcome, John. The setup is simple. Any broadband router sold
at computer and office supply stores for home and small office use
will be fine. Connect everything as I said above. Make sure that the
two new routers use a different IP subnet than the old router. For
example, if the old router uses 192.168.1.x, configure the new routers
to use 192.168.0.x.
--
Best Wishes,
Steve Winograd, MS-MVP (Windows Networking)

Please post any reply as a follow-up message in the news group
for everyone to see. I'm sorry, but I don't answer questions
addressed directly to me in E-mail or news groups.

Microsoft Most Valuable Professional Program
http://mvp.support.microsoft.com
 
Hi Steve,

Thanks for your reply. I'm afraid I'm being a bit slow, so can I just check
my thinking?

a) I connect my Netgear DG824M (Call this Netgear Router 1)
(http://kbserver.netgear.com/products/DG824M.asp) via one of its four
ethernet ports to one of the four ethernet ports on the DSL connected
Speedtouch 510 modem/router.

b) I do the same with a third router (maybe another DG824M). (Call this
Netgear Router 2)

c) I enable DHCP server on Speedtouch with IP range from 192.168.0.1 /
Subnet 255.255.255.0

d) I enable DHCP server on Netgear Router 1 with IP range from 192.168.1.1 /
Subnet 255.255.255.0

e) I enable DHCP server on Netgear Router 2 with IP range from 192.168.2.1 /
Subnet 255.255.255.0

The spec in the Netgear manual says:
...."The gateway incorporates Auto UplinkTM technology. Each LOCAL Ethernet
port will automatically sense whether the Ethernet cable plugged into the
port should have a 'normal' connection such as to a PC or an 'uplink'
connection such as to a switch or hub. That port will then configure itself
to the correct configuration."...

So I'm assuming this means its ok to use the LAN ports to connect to the
Speedtouch router?

Anyway, apologies for asking the same thing twice, but thanks for your help.

Best regards

John
 
No, Steve's solution contemplates that you would connect the WAN/Internet
port of the respective routers to LAN ethernet ports on the SpeedTouch. I
do not believe that your DG824M has a WAN/Internet ethernet port. If this
is the case, you would need a different router.

Doug Sherman
MCSE, MCSA, MCP+I, MVP
 
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