configuring a switch with adsl modem

1 ANSWERS

1. amomipais82
   

   Hi,
   The difference between DHCP SPOOFING and BRIDGING (described here  Configure Alcatel SpeedTouch Pro to Act as a Transparent Bridge) is that with bridging the end-machine/router does the dialing, and so it gets the real IP address from the ISP. With spoofing the modem dials for you, receives the IP address from the ISP, and then gives it to the end-machine/router.
   
   This method will work if one of the following assumptions is true:
   
       * Your modem is connected to the Internet and another computer is connected to your modem.
       * Your modem is connected to the Internet and you have a router that is connected to the modem. This router must have NAT capabilities. The router will then be connected to a hub/switch, and to it other computers will connect.
       * Your modem is connected to the Internet and you have a server computer that is connected to the modem. This server must have Routing and NAT capabilities. The server will then be configured with another NIC, and to it you connect another computer.
       * Your modem is connected to the Internet and you have a server computer that is connected to the modem. This server must have Routing and NAT capabilities. The server will then be configured with another NIC, to which you will then connect a hub/switch, and to it other computers will connect.
   
   Make a note of the fact that the modem will stop acting as a router with NAT/PAT which means that you'll have to connect it to a router or server that has NAT capabilities. Without such configuration you won't be able to connect to the Internet.
   
   Note: This configuration tip will only work in the 510 modem or on a HOME modem that was upgraded to PRO and then upgraded to 510: Upgrade from Alcatel SpeedTouch Home to Pro and Upgrade from Alcatel SpeedTouch Pro to 510.
   
   Proposed layout:
   
   configure-alcatel-speedtouch-510-for-dhcp-spoofing_1234556284900
   
      1. The ADSL cable goes to the splitter.
      2. The ADSL modem is connected to the splitter.
      3. The ADSL modem is configured as 510.
      4. NAT is disabled on the modem.
      5. The Ethernet cable from the modem is connected to the router (or server with RRAS and NAT
      6. The router / server is connected to the switching hub.
      7. All PC's are connected to the switching hub.
   
   Disclaimer & Warning
   
   Messing with the software settings of your modem and/or messing with the registry or internal settings of your operating system can render your modem or operating system useless. Read the whole article and manual before you do any changes. Following these steps might work for you. It did for me and for many others, but that does not necessarily mean they will! I take no responsibility for anything bad that might happen to your OS or modem, and since you're on your own - Do not ask me for help! It's your modem!
   
   Applying this hack will definitely VOID WARRANTY! If you are not experienced with tricks like these STOP NOW! Besides, some ISPs might stop supporting you if they find out that you messed up with your modem.

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