will this work - double DHCP?

Please can someone give me a quick yes/no/maybe on below - I'm thinking it
won't work or be set up easily:

My friend has a BT Voyager 205 ADSL modem which supplies broadband over
ethernet cable to a PC. PC network connection shows as IP address
192.168.1.x . The voyager also has an unused USB output for a 2nd PC or
game.

He's acquired a Belkin F5D7230uk4 802.11g Wireless DSL/Cable Gateway Router,
which connects via ethernet to an ADSL modem and provides DHCP outputs to
Ethernet LAN and WLAN.
He wants to connect ADSL to Voyager to Belkin ; to share ADSL between
existingPC & a new wireless laptop, and to network PC to laptop. .

I'm thinking the Belkin won't like seeing the "ISP's WAN address" starting
192 and trying to route this to LAN addresses also starting 192. i.e that
you can't run two cascaded DHCPs.

What do the experts think?
Thanks

Keith

"keith" <(E-Mail Removed)> wrote in message
news:dp1f4t$lj8$(E-Mail Removed)...
> Please can someone give me a quick yes/no/maybe on below - I'm thinking it
> won't work or be set up easily:
>
> My friend has a BT Voyager 205 ADSL modem which supplies broadband over
> ethernet cable to a PC. PC network connection shows as IP address
> 192.168.1.x . The voyager also has an unused USB output for a 2nd PC or
> game.
>
> He's acquired a Belkin F5D7230uk4 802.11g Wireless DSL/Cable Gateway
Router,
> which connects via ethernet to an ADSL modem and provides DHCP outputs to
> Ethernet LAN and WLAN.
> He wants to connect ADSL to Voyager to Belkin ; to share ADSL between
> existingPC & a new wireless laptop, and to network PC to laptop. .

i have done something similar before with 2 netgear routers.
>
> I'm thinking the Belkin won't like seeing the "ISP's WAN address"
starting
> 192 and trying to route this to LAN addresses also starting 192. i.e that
> you can't run two cascaded DHCPs.

main thing is that the network portion of the address is different (although
NAT should work with the same address on both sides, some devices dont seem
to like it)

network mask for a 192 address is normally 255.255.255.0 on these small
routers.

so - if the belkin uses or is configured to use a subnet of 192.168.2.x (or
any apart from 192.168.1.x), then there shouldnt be any issues. (this
assumes the WAN port on the belkin connects to the voyager)
>
> What do the experts think?

i think the DHCP in the title is probably irrelevant.

DHCP clashes are only going to be an issue if both devices are serving from
the same set of addresses in the same subnet / LAN.
> Thanks
>
> Keith
--
Regards

(E-Mail Removed) - replace xyz with ntl

regards
> i think the DHCP in the title is probably irrelevant.
>
> DHCP clashes are only going to be an issue if both devices are serving
> from
> the same set of addresses in the same subnet / LAN.



Thanks for such a quick reply. I was overstepping my knowledge in the title
above.
So I'll keep DHCP running and make sure the ranges aren't overlapping., ie
192.168.1.x & 192.168.2.x
cheers Keith>>

"keith" <(E-Mail Removed)> wrote in message
news:dp1l33$t37$(E-Mail Removed)...
>
> regards
> > i think the DHCP in the title is probably irrelevant.
> >
> > DHCP clashes are only going to be an issue if both devices are serving
> > from
> > the same set of addresses in the same subnet / LAN.
>
>
>
> Thanks for such a quick reply. I was overstepping my knowledge in the
title
> above.
> So I'll keep DHCP running and make sure the ranges aren't overlapping., ie
> 192.168.1.x & 192.168.2.x
> cheers Keith>>
>
I am running a 205 with an IP address of 192.168.1.1 then to a netgear
wireless router with an IP 192.168.0.1 and the pc's are in the range
192.168.0.2 etc, no problems just have all the settings automatic.

Des

"keith" <(E-Mail Removed)> wrote in message
news:dp1f4t$lj8$(E-Mail Removed)...
> My friend has a BT Voyager 205 ADSL modem which supplies broadband over
> ethernet cable to a PC. PC network connection shows as IP address
> 192.168.1.x . The voyager also has an unused USB output for a 2nd PC or
> game.
>
> He's acquired a Belkin F5D7230uk4 802.11g Wireless DSL/Cable Gateway
> Router, which connects via ethernet to an ADSL modem and provides DHCP
> outputs to Ethernet LAN and WLAN.
> He wants to connect ADSL to Voyager to Belkin ; to share ADSL between
> existingPC & a new wireless laptop, and to network PC to laptop. .

Provided the LAN address ranges on the two routers are distinct, this should
basically be OK. If the Voyager's LAN interface is configured with a
192.168.1.x address and has a subnet mask of 255.255.255.0 (which is very
likely), then you could configure the Belkin's LAN-side interface with eg
address 192.168.2.1 and subnet mask 255.255.255.0.

In some ways it would be better to go for an alternative configuration:
connect the Voyager's Ethernet port to one of the Belkin's LAN ports,
leaving the Belkin's WAN port unconnected. In this case, you must first turn
off the the Belkin's DHCP server and configure its LAN-side interface with
an address in the same range as used on the Voyager. These steps are
necessary in order to avoid conflicts with the Voyager's DHCP server and
access the Belkin's web administration once everything is physically set up.
What this does is effectively turn the Belkin router into a wireless access
point plus switch; only the Voyager performs routing. Data to/from wireless
clients is bridged to Ethernet, including DHCP requests/replies.

Alex

In news:(E-Mail Removed),
Des <(E-Mail Removed)> typed (subject to snippage)>
> "keith" <(E-Mail Removed)> wrote in message
> news:dp1l33$t37$(E-Mail Removed)...
>>
>> regards
>>> i think the DHCP in the title is probably irrelevant.
>>>
>>> DHCP clashes are only going to be an issue if both devices are
>>> serving from
>>> the same set of addresses in the same subnet / LAN.
>>
>>
>>
>> Thanks for such a quick reply. I was overstepping my knowledge in
>> the title above.
>> So I'll keep DHCP running and make sure the ranges aren't
>> overlapping., ie 192.168.1.x & 192.168.2.x
>> cheers Keith>>
>>
> I am running a 205 with an IP address of 192.168.1.1 then to a netgear
> wireless router with an IP 192.168.0.1 and the pc's are in the range
> 192.168.0.2 etc, no problems just have all the settings automatic.
>
> Des

I'm running my ISP into a Smoothwall Express box, my DMZ comes straight off
a port on that, with fixed addresses for my servers, but my household
network is is then routed via a Netgear wireless router which has it's WAN
side allocated a DHCP address, and which is happy having the same address
range on both sides, I had planned to use a different set of addresses but
when I switched it on to make the changes it already worked.

For the record, it worked fine and was set up in minutes, thanks to a very
good wizard that came with the Belkin router and did everything for me.

It set up the Belkin and PCs as part of a 192.168.2.x network, looking at
192.168.1.1 for the internet access.

But I can't get printer & file sharing to work between the two PCs... will
read up & make another post if needed.

(One PC shows both PCs as workgroup computers , but says I don't have
permission when trying to access shares. Other PC doesnt show any workgroup
PCs. File & printer sharing runs on both PCs.)