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Speedtouch 780WL used as WLAN router only

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Frank Knappe

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Oct 25, 2010, 5:19:17 PM10/25/10
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Hello,

back from my time in Scotland I still have a Speedtouch 780WL, which I
used with Freeola. I already learned that I will not be able to use the
DSL-modem functionality here in Germany (Annex B vs. Annex A on the
device).

Has anyone be able to configure the 780WL, so that I can attach it to a
normal DSL-modem.

DSL-modem -> Ethernet cable -> 780WL -> WLAN

Thanks in advance


--

Ciao , Frank.


bod43

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Oct 25, 2010, 8:18:00 PM10/25/10
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I have no idea what a 780WL might be exactly however every
broadband router that I have ever seen will work as
you suggest.

You don't really need to do anything at all.

Oh! Well might be a good idea to make sure that you
don't have more than one DHCP server on the network:-)

Just turn off DHCP on one of your devices - OR -
if you want to get fancy set them for different
addess ranges.

Router A
192.168.1.4-26

Router B
192.168.1.39-174

subnet msk 255.255.255.0 in both cases.

For example.


Mike Civil

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Oct 26, 2010, 1:44:31 PM10/26/10
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In article <slrnicbt2l...@hali01.rz.tu-harburg.de>,

Frank Knappe <Kna...@tu-harburg.de> wrote:
>Has anyone be able to configure the 780WL, so that I can attach it to a
>normal DSL-modem.
>
>DSL-modem -> Ethernet cable -> 780WL -> WLAN

Most routers without a dedicated WAN port won't let you do this. However
it's possible with Thomsons if you're prepared to get involved with the
command line - have a look at the following wiki which describes a way
to convert a LAN port to a WAN port into which you can plug a cable or
DSL modem with an ethernet presentation.

http://network.wiki.xs4all.nl/index.php?title=How_use_a_cable_modem_with_your_SpeedTouch

Lots of other config options for Thomson routers at :-

http://network.wiki.xs4all.nl/index.php?title=Speedtouch_Configuration

Frank Knappe

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Oct 26, 2010, 4:08:41 PM10/26/10
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Mike Civil <mi...@duncodin.org> wrote:
> Most routers without a dedicated WAN port won't let you do this. However
> it's possible with Thomsons if you're prepared to get involved with the
> command line - have a look at the following wiki which describes a way
> to convert a LAN port to a WAN port into which you can plug a cable or
> DSL modem with an ethernet presentation.
>
> http://network.wiki.xs4all.nl/index.php?title=How_use_a_cable_modem_with_your_SpeedTouch

Thanks, that looks very promising. Does a factory reset also kills all
such changes done by the cli? Just for the case that it doesn't work and
I have to start again.

> Lots of other config options for Thomson routers at :-
>
> http://network.wiki.xs4all.nl/index.php?title=Speedtouch_Configuration

Interesting stuff to read. Thanks again.

--

Ciao , Frank.


Mike Civil

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Oct 27, 2010, 7:24:00 AM10/27/10
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In article <slrniceda9...@hali01.rz.tu-harburg.de>,

Frank Knappe <Kna...@tu-harburg.de> wrote:
>Thanks, that looks very promising. Does a factory reset also kills all
>such changes done by the cli? Just for the case that it doesn't work and
>I have to start again.

Once a :saveall command is performed the router will remember the
settings across reboots (or power off/on) so it can be worth delaying
the :saveall until after some initial testing has been done. After the
:saveall pressing the reset button at the rear of the router will restore
default settings (either factory or ISP).

If you do go down this route it can be worth setting up a script which
can be uploaded to the router to save having to cut and paste each time
the router is reset. This is covered in a Thomson document a copy of
which can be found here:-

http://download.modem-help.co.uk/mfcs-A/Alcatel/Modems/SpeedTouch-780WL/v5/Manuals/Application-Notes/Embedded-Script-App-Note-EN-r7.4.2.pdf.7z.php

or

http://tiny.cc/0xhe8

Michael Chare

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Oct 28, 2010, 7:58:55 PM10/28/10
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"Frank Knappe" <Kna...@tu-harburg.de> wrote in message
news:slrnicbt2l...@hali01.rz.tu-harburg.de...
If the DSL modem will act as a DHCP server then you should be OK if you turn
off DHCP in the 780WL,

If not, you might have to use fixed IP addresses, I could not configure DHCP
my Speedtouch 510 to give out a default gateway and DNS server addresses
which were not its own even though I entered different addresses on the
configuration file command line.

--
Michael Chare

Frank Knappe

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Oct 29, 2010, 9:51:04 AM10/29/10
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Mike Civil <mi...@duncodin.org> wrote:
> Most routers without a dedicated WAN port won't let you do this. However
> it's possible with Thomsons if you're prepared to get involved with the
> command line - have a look at the following wiki which describes a way
> to convert a LAN port to a WAN port into which you can plug a cable or
> DSL modem with an ethernet presentation.
>
> http://network.wiki.xs4all.nl/index.php?title=How_use_a_cable_modem_with_your_SpeedTouch

I've made several tries with this chain of commands (and also others
which I found on other places). I was able to convert a LAN port into a
WAN port. However, I didn't managed to to get an Internet connection
through this configuration. Do I have to give any IP onto the DSL modem
or does the speedtouch automatically uses the WAN port as default
gateway?


--

Ciao , Frank.


Frank Knappe

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Oct 29, 2010, 9:52:28 AM10/29/10
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Michael Chare <MunderscoreNews@chareDOTorgDOTuk> wrote:
> > DSL-modem -> Ethernet cable -> 780WL -> WLAN
> >
> If the DSL modem will act as a DHCP server then you should be OK if you turn
> off DHCP in the 780WL,

without reconfiguration of one LAN port into a WAN port?

--

Ciao , Frank.


Graham J

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Oct 29, 2010, 12:07:39 PM10/29/10
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"Frank Knappe" <Kna...@tu-harburg.de> wrote in message
news:slrniclka8...@hali01.rz.tu-harburg.de...

In an ordinary router having an ethernet WAN port, the router will contain a
routing table to direct traffic from the LAN which is addressed to the
router out of the WAN port. Sometimes the WAN port will have an IP address,
sometimes it will be bridged to the separate modem. Either the modem itself
will give the WAN port an IP address, or the ISP will give the modem an IP
address which is then bridged through to the WAN port.

I'm not familiar with the command language for the Speedtouch but at a
glance the commands for the version 6.1 firmware look like they should cause
the WAN port to get an IP address. The key will be whether the router then
builds a routing table that does the right thing, and implements NAT.

There should be commands which will show what the router is configured to
achieve - these might help you get the configuration right ...

--
Graham J


Michael Chare

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Oct 29, 2010, 12:56:50 PM10/29/10
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"Frank Knappe" <Kna...@tu-harburg.de> wrote in message
news:slrniclkcs...@hali01.rz.tu-harburg.de...

The 780WL to DSL Modem is by Ethernet so it is not WAN.

I think that you need to know what the DSL modem will do, and how it is
intended to be used.

If you have FTTC in the UK, then BT provide you with a box that has an
Ethernet port. To attach more than one computer (or have Wifi) you then
have to buy what is sold as a 'cable router'. This has one port that
attaches to the BT box, and provides normal NAT/Firewall functions. It could
be that is what you need. I would suggest contacting the German ISP to find
out what the recommend.


--
Michael Chare

bod43

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Oct 30, 2010, 3:56:23 AM10/30/10
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On 29 Oct, 17:56, "Michael Chare" <MunderscoreN...@chareDOTorg.uk>
wrote:

There are two different ways to do this.

1.
Use the Thomson router as a wireless access point.

Simply plug one of your ethernet ports into your
DSL modem and off you go. You may
need a crossover ethernet cable but if the port
cones up all is well.

In this case all internal traffic is bridged. You have one
internal subnet. all you need to worry about is turning off
DHCP on one of the devices or otherwise
ensuring DHCP compatibility across the two devices.

2.
As mentioned by Mike you can configure the Thomson
as a router (it seems:). In this case you would have
two subnets internally, you will need to worry about routing
with configuration changes on both routers, or
you could do NAT on both.

I recommend approach .1. unless you know what you are
about and have special requirements. I have done just this
with a different Thomson router in the past. No problems
at all, turn off dhcp, and of course configure the wireless
SSID etc, and it simply worked.

Mike Civil

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Oct 30, 2010, 4:23:50 AM10/30/10
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In article <ObGdnfgLUJ1XYVfR...@brightview.co.uk>,

Michael Chare <Munders...@chareDOTorg.uk> wrote:
>The 780WL to DSL Modem is by Ethernet so it is not WAN.

Why does having a feed over Ethernet not mean it's a WAN feed (ie a feed
from somewhere other than the local area network)? It's a pretty normal
state of affairs in commercial routers to have a WAN feed over Ethernet
from some form of external device.

Mike Civil

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Oct 30, 2010, 4:48:58 AM10/30/10
to
In article <slrniclka8...@hali01.rz.tu-harburg.de>,

Frank Knappe <Kna...@tu-harburg.de> wrote:
>I've made several tries with this chain of commands (and also others
>which I found on other places). I was able to convert a LAN port into a
>WAN port. However, I didn't managed to to get an Internet connection
>through this configuration. Do I have to give any IP onto the DSL modem
>or does the speedtouch automatically uses the WAN port as default
>gateway?

I think this may depend on how your modem is set up. The instructions in
the wiki assume that the modem is providing dhcp services and provides
IP addresses for itself and the WAN port on the router, and a default
route. It may be that your modem is set up in bridging mode and that
your router will have to use PPPoE and supply login credentials.

The commands

:ip iplist
:ip iflist
:ip rtlist expand=enabled
:ppp iflist

should give some clues on how the 780 is setting up.

Note that this is all possible (assuming correct firmware levels etc)
as at least one ISP in the UK (PlusNet) is providing customers on their
FTTP trial with TG585 routers set up in exactly this way.

Frank Knappe

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Nov 1, 2010, 6:02:24 PM11/1/10
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Michael Chare <Munders...@chareDOTorg.uk> wrote:
> I think that you need to know what the DSL modem will do, and how it is
> intended to be used.

That's correct, without a question. Unfortunately I don't have it,
because the installation hasn't been done yet.

> be that is what you need. I would suggest contacting the German ISP to find
> out what the recommend.

Well, wat the ISP recommends is very clear. You should "buy" their
hardware. Unfortunately you don't buy it, but only rent it for a one-off
payment. Which I consider to high for the provided functionality.

--

Ciao , Frank.


Michael Chare

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Nov 2, 2010, 10:31:06 PM11/2/10
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"Mike Civil" <mi...@duncodin.org> wrote in message
news:m91tp7-...@lucy.duncodin.org...

Following the instructions that you mentioned earlier then it would be a
WAN, but that was not what I was suggesting.

I suspect what the OP needs is something like the Netgear WNDR3700 currently
reviewed on the www.thinkbroadband.com site.


--
Michael Chare

Frank Knappe

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Nov 11, 2010, 3:33:34 AM11/11/10
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Mike Civil <mi...@duncodin.org> wrote:
> I think this may depend on how your modem is set up. The instructions in
> the wiki assume that the modem is providing dhcp services and provides
> IP addresses for itself and the WAN port on the router, and a default
> route. It may be that your modem is set up in bridging mode and that
> your router will have to use PPPoE and supply login credentials.

The installation will be made Thursday next week and then I will be able
to make tests on the real installation. Let's wait and see.

--

Ciao , Frank.


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