Last update: 2009 02 04

How to Configure the Scarlet Box in a Home Lan Environment

Background

Warning: I cannot be sure that the procedure below will work for you. Nor can I be sure that it won't completely screw up your Scarlet Box, your PC, your router, and your life in general. So whatever happens, use your judgement! and no matter what, PLEASE don't send me hate e-mail! I will be happy to answer any questions that I can, though.

This document describes how to adapt the Scarlet Box configuration to enable a connection to a router (wifi or wired). It is assumed that before setting up the Box, an ADSL modem was connected to the router and your LAN worked properly. We will propose a solution to configure the Scarlet Box so as to replace the ADSL modem.

Router with Ethernet input connector

This section describes how to configure a Scarlet Box and a router with a Ethernet connection to the modem. If you have an ADSL Modem/Router that only has a telephone connector for the connection to Internet (your telephone line) then go to the next section ADSL Modem/Router below.

The Scarlet box is configured by default to act as both a modem and a router, but only for a single PC. The goal of the following operations is to disable the routing function of the box and let it simply pass the ADSL connection to the router. This is called Pass through and entails configuring the Scarlet Box as a Bridge.

The following procedure has an advantage in that it does not change the default IP address settings of the Scarlet Box. It has one minor weakness, too. Once the Scarlet Box is configured and connected to the router, it can no longer be directly accessed from the PC's on the LAN. This is only a minor problem. To access the Box, simply connect it directly to one of the PC's.

Reference Data

Scarlet Box User-name & Password (both are the same):
admin
Scarlet Box Default IP Address:
172.19.3.1
Scarlet Box Virtual Interface IP Address:
192.168.168.254 (We will explain how to set this up.)
Router Default IP Address:
192.168.168.230
Scarlet Box Manufacturer's Reference Manual:
Allied Technology Copperjet 1616-2P

Configuration Procedure for Router with Ethernet Internet connector

  1. Connect the Scarlet Box to a PC, not to the router:

    Unplug the Ethernet cable from the PC and plug the Scarlet Box's cross-over Ethernet cable into the same socket where the router was previously connected.

  2. Manually configure the IP address of the PC:

    Double click the network icon, then select properties, then TCP/IP properties, and from there manually set the IP address to 172.19.3.2, i.e. the first 3 numbers should be the same as the Box's IP address and the last one must be different.

  3. Access the Box and backup its configuration to disk:

    Open a browser and enter the URL http://172.19.3.1. You will see the Scarlet Box configuration system. Click the Menu System then Backup. Click on Backup and download the file to disk. Then, open a file browser and rename the backup file from scarlet.tpr to scarlet_original_config.tpr.

  4. Create a Virtual Interface for the Scarlet Box:

    A virtual interface allows the Scarlet Box to communicate on several networks at the same time. In our case, we would like it to be able to communicate on our router's network (192.168.168.*)as well as on the Box's default network (172.19.3.*).

    1. Click the menu Configuration, then Lan Settings (this is also available via the Status menu),
    2. Select edit on the entry for Ethernet-0,
    3. Click Create Virtual Interface,
      IP Address: 192.168.168.254
      Subnet Mask: 255.255.255.0
      then click OK.

  5. Remove the PPPoE WAN service from the Scarlet Box:
    1. On the menu Configuration, select Wan connections.
    2. Then delete the connection called ppp-0. Do not close the dialog, the next step assumes you are at the same point.

  6. Create a RFC1483 Bridged connection on the bridge WAN service on the Box:
    1. Click on Create New Service,
    2. Select the first one at the top: RFC1483 Bridged connection on the bridge ,
    3. Set the following parameters (leave the others at their default value):
      VPI = 8
      VCI = 35
      Then click OK.

  7. Disable DHCP on the BOX:

    Go the main menu, then Configuration, then DHCP. Click to Disable.

  8. Save the configuration to the Scarlet Box:

    Go the main menu, then Configuration, then Save Config.

  9. Backup the new configuration:

    Click the Menu System then Backup. Click on Backup and download the file to disk. Then, open a file browser and rename the backup file from scarlet.tpr to scarlet_bridge_no_dhcp.tpr. Keep this configuration for future reference.

  10. Restart the Box:

    Click the Menu System then Restart Device.

    At this point, your work is "done", but let's just check to be sure that there is no problem...

  11. Verify that the Scarlet Box can be accessed on the Virtual Interface:
    1. Manually configure the IP address of your PC to 192.168.168.1, see above for instructions.
    2. Open a web browser and enter the URL http://192.168.168.254
      You should see the Scarlet box configuration system. If you don't then you've made a mistake and will have to start over.

    At this point if all went well, you are ready to connect your router and get your network back. If you could not see the Scarlet Box on the Virtual Interface (http://192.168.168.254), then you should reset the box to its original configuration:

    1. Manually configure the IP address of your PC to 172.19.3.2, see above for instructions.
    2. Open a web browser and enter the URL http://172.19.3.1
      You'd better see the Scarlet box configuration system. If you don't then it's time to panic...
    3. Reload the original configuration by the menu System then Update. Scroll to the second section Select Configuration Profile and browse to the file scarlet_original_config.tpr. Then Save the config to the Box, and start again...

    So at this point, let's assume that all is well. Now all that's left to do is to reconnect the cables and you should have your network back the way it was before the arrival of the Box.

  12. Connect the Box to the router and the router to the PC:

    Disconnect the Box's cross-over cable from the PC, and plug it into the ADSL Ethernet socket on the router. Plug the Ethernet LAN cable back into the PC as it was originally.

  13. Configure the PC to obtain an IP address from the router's DHCP:

    Double click on the network icon, go to properties, then TCP/IP properties and select Obtain an IP address automatically. This will take 1-2 minutes.

  14. Test the Internet connection:

    Open a web browser and go to your favorite site. It works - you're a hero, Congratulations!

Configuring the Scarlet Box with an ADSL Modem/Router

In this section, we will set up the Scarlet Box to work with an ADSL Modem/Router. In this situation, we will use the Scarlet box as both a modem and a router. The ADSL Modem/Router will only act as a hub or switch. This is not optimal, but it's better than nothing. Again, if this doesn't work for you, I am truly sorry, but it's the best I can do at this time.

Reference Data

Scarlet Box Default IP Address:
172.19.3.1
Router Default IP Address:
192.168.1.1
Router Target IP Address:
172.19.3.254
Scarlet Box Manufacturer's Reference Manual:
Allied Technology Copperjet 1616-2P

Our goal is first to see if you can use the Scarlet box, then to see if you can connect the ADSL Modem/Router to your pc and scarlet box.

Part 1: Getting the scarlet Box to work connected directly to the PC.

  1. The scarlet box is connected to the phone line,
  2. The scarlet box is connected to the PC by the CROSS Ethernet cable that came with the Scarlet box.
  3. there are no other connections - the ADSL Modem/Router is not connected to anything.
  4. You turn on the PC.
  5. Can you connect to Internet: in the Browser try http://www.google.com or http://gratefulfrog.net Do you get to the sites?
    Answer: Yes, go on.
    Answer: No, double check the wiring, be sure that the Scarlet box is set to default settings, and that your PC is set to automatically obtain an IP address (double click the network icon, then properties, then TCP/IP properties.)
  6. Can you get to the scarlet box config screen: http://172.19.3.1 ?
    Answer: Yes, go on.
    Answer: No, who knows? Call Scarlet help, or search the forums...

    If that fails, then we're really in trouble. Let' say that it doesn't fail.

Part 2: Getting to the ADSL Modem/Router box:

  1. Browse to the scarlet box configuration screen at http://172.19.3.1,
    go to DHCP and set to DISABLE,
    apply and save config.
  2. Turn everything off.
  3. Disconnect the scarlet box from the pc.
  4. Connect the scarlet box to the ADSL Modem/Router via the CROSS Ethernet cable (that came with the Scarlet Box) into one of the available Ethernet ports.
  5. Connect the pc to the ADSL Modem/Router via a normal Ethernet cable to one of the ADSL Modem/Router's remaining available Ethernet ports.
  6. turn everything on.
  7. on the PC: try to get to the ADSL Modem/Router config page: http://192.168.1.1
  8. Do you see the ADSL MODEM/ROUTER config page?
    Answer: Yes, go on.
    Answer: No, err, ahh, well good luck (check everything!).

    Now here's the hard part. Be careful and try this exactly as I say:

  9. Disable DHCP on the ADSL Modem/Router, apply and save changes. It should still look ok and respond.
  10. Change the ADSL Modem/Router's "Manage IP address" or whatever it's called on your model, to 172.19.3.254 and click apply. Everything will freeze up. This is correct. Exit your browser but DON'T turn off the ADSL Modem/Router or anything else!
  11. on your pc, double click on the network icon, then select properties then TCP/IP protocol properties. (is this scary or what!).
  12. Here's the trick. select "use the following IP address" and input:
    IP address: 172.19.3.2
    subnet mask: 255.255.255.0
    default gateway: 172.19.3.1
    DNS server:
    primary DNS server: 193.74.208.65
    secondary DNS server: 194.119.228.67

    then click OK, ok, ok until all those windows go away.

  13. Open the browser again (it was completely shut down, wasn't it!?).
  14. Everything works perfectly? you can see http://www.google.com and all the Internet?
    answer: Yes!

    The answer was "yes" you are a hero! you feel great! NOW DON'T touch any configuration - just save the ADSL Modem/Router configuration!!!! (http://172.19.3.254, click save configuration, then click restart router!

    If the ADSL Modem/Router setup does seem to contain any save nor restart options, but the settings are saved upon exiting anyway, then just relax!

    If the answer was "no" (you must have incredible patience), try to go through all this carefully one last time. Then, in case of repeated failure, seek help from someone who knows what they're talking about, i.e. NOT ME...

  15. If by some chance you got to the last step, and were a hero, then you must now configure your other pc's. Use the following model:
    PC-1 is the one we just set-up.
    PC-2 needs the network TCP/IP properties as follows:
    IP address: 172.19.3.3
    subnet mask: 255.255.255.0
    default gateway: 172.19.3.1
    DNS server:
    primary DNS server: 193.74.208.65
    secondary DNS server: 194.119.228.67

    PC-3 needs:
    IP address: 172.19.3.4
    and all the other numbers THE SAME!

    For each additional PC, increment the last number of the IP address by one, but keep all the other numbers THE SAME!

At this point either you are a somewhat relieved hero, or you probably hate me and all the rest of Internet! I hope it's the former!

Good Luck,
GF.