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Old 29.06.2011, 19:45
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Swisscom VDSL - multiple public IP addresses

Hi,

I wonder if anybody knows about the Swisscom VDSL service?

I currently have the simplest VDSL bridge modem from Swisscom.

Connected to the modem I use a router which logs in using a PPPoE username and password. The router then gets assigned a static public IP on the WAN side automatically.

What I would like to do is to have two routers connected to the modem, each with a different public IP address.

I ordered from Swisscom a change so that I get 4 static IP addresses. It was my understanding that I can connect two routers to the modem via a switch. Each router logs in with a different PPPoE user/pass and so gets assigned a different public IP on the WAN side.

I'm not sure if this is correct, because I just got the info from Swisscom. They only give me one PPPoE login, and list the four IP addresses as:

Useable IP
Network address
Router IP
Broadcast IP

Have I understood something incorrectly?

Does anyone have experience using the Swisscom VDSL service behind a simple bridge, and getting two routers to have different public IP addresses?

Thanks, James
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Old 29.06.2011, 20:20
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Re: Swisscom VDSL - multiple public IP addresses

I have no real idea, but what happens if you set up both routers with the same user/password and instead of choosing a host determined IP address you enter one of the IP addresses supplied (different for each router)?
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Old 29.06.2011, 20:22
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Re: Swisscom VDSL - multiple public IP addresses

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I have no real idea, but what happens if you set up both routers with the same user/password and instead of choosing a host determined IP address you enter one of the IP addresses supplied (different for each router)?
Because with PPPoE you don't have the option of setting your public IP!
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Old 29.06.2011, 20:23
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Re: Swisscom VDSL - multiple public IP addresses

I do not have Swisscom services, just plain Cablecom with multiple public IPs.

Previously, I had a Linux box ( IPCOP http://www.ipcop.org/ ) that handled all 4 IPs that Cablecom gave me. The box was connected directly to the ISP modem ( VLAN ).

Later one, I had a business router with several WAN ports ( and VLAN capability ) which was connected to a switch which was then connected to the ISP modem.


Most simply routers cannot handkle more than a single public IP unless flashed with an alternate firmware.
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Old 29.06.2011, 21:31
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Re: Swisscom VDSL - multiple public IP addresses

I have a feeling that your vdsl modem can only be assigned one public IP address. Log in to it and have a look (it used to be 192.168.1.256 admin/1234)
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