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Q: Cayman-DSL Model 3220 mutliple IP router question ( Answered,   2 Comments )
Subject: Cayman-DSL Model 3220 mutliple IP router question
Category: Computers > Hardware
Asked by: menendez-ga
List Price: $40.00
Posted: 17 Jun 2002 22:18 PDT
Expires: 17 Jul 2002 22:18 PDT
Question ID: 28297
Router information is at the bottom. This is one of those router/modem
things and I have 5 IP #s assigned to me according to Pacbell.
Un/fortunately, because it's doing NAT internally, externally I am
only seen as 1 IP address. How can I use the other address internally
too? For for example point to box A and point to box

Terminal shell v1.0
Cayman-DSL Model 3220-H, DMT-ADSL (Alcatel) plus 4-port hub
Running GatorSurf version 5.6.1 (build R0)
(administrator completed login: administrator level)
Serial number 1719865, CPU MPC850SAR, firmware 2.6, PID 0829

Request for Question Clarification by runix-ga on 17 Jun 2002 22:47 PDT
Are you using windows or linux or.. what?
Subject: Re: Cayman-DSL Model 3220 mutliple IP router question
Answered By: andyt-ga on 18 Jun 2002 01:40 PDT

The router, by default installation has DHCP and NAT both turned on. 
Since you have 5 IP numbers assigned to you, you'll want to turn off
NAT in order to be seen by the external internet as 5 separate

This excerpt from the user guide describes what NAT does.
"Network Address Translation (NAT) lets your workgroup network share
one IP address when communicating with other hosts on your corporate
network or the Internet."

I have listed the procedure, step by step that will turn off NAT on
your router:

1. Browse into CaymanŽ Series 3220.  You can do this by going to the
address of your router in a standard web  browser, and then entering
the Administrator name and password.  If you have used the standard
settings the address should be

2. Click on DSL Port Lan link.

3. Next to VCC1, click the "Config" button.

4. Navigate to the NAT (address mapping) on/off radio buttons.

5. Make your selection.

6. Click on the "Save" button, and restart the CaymanŽ Series gateway.

3220-H series router user guide

3220-H series router quick start guide

Cayman Series frequently asked questions

Search Strategy:
Cayman DSL 3220 netopia

As always I hope this answer is to your satisfaction.  If not, please
don't hesistate to ask for a clarification.

Subject: Re: Cayman-DSL Model 3220 mutliple IP router question
From: runix-ga on 17 Jun 2002 23:06 PDT

Probably the only thing you need to do to use all the IPs is to
configure each server to take the IP you want.
If you're using Windows, you have to go to the control panel,
networking opts, and then select the properties for the TCP/IP
protocol. There, you have to assign the IP you want (from the ones
that your ISP gave you). You will have to configure the Gateway and
the DNS servers:
to get their IPs you can connect as you used to and execute 'winipcfg'
Subject: Re: Cayman-DSL Model 3220 mutliple IP router question
From: jharokha-ga on 18 Jun 2002 00:15 PDT
I believe I have the answer. :-) (I am not a researcher here)

1. Refer to
for more information on how to configure the modem using your internet
browser. It should be intutive after that. :-)
(you should disable NAT, and enable DHCP)

The document has information on how to configure the IP address on a
Windows or Machintosh. IP address configuration on Linux box can be
done using netcfg or other utilities.

Let me know if this info is of any help.


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