Cable Forum - View Single Post - Cable Modem Setup Without the Broadjump CD !

Sociable · 21-02-2004, 11:52

All Stand Alone Cable Modems (SACM) need to bind themselves to the new Ethernet connection by having a full reboot of the modem by powering down and then connecting the ethernet cable and powering back up the modem. This associates the modem with the Ethernet card (NIC). This process has to be repeated any time the connection is changed either to or from USB or simply from one NIC to another.

One option if you are stuck on the default Windows 169.xx.xx.xx address when trying to use ethernet for a SACM after having done the above is to do a full initialising of the modem by then disconnecting the modem from everything. (i.e. also disconnect from the main NTL cable once the power is off) Then power the modem back up with the cable still disconnected.

Then power down the modem again and reconnect the main NTL cable and let the modem settle down and get its correct IP from NTL and at this point do a full reboot on the PC itself leaving the modem switched on so that it retains the connection. Windows should then see the correct connection on the modem after the reboot and not assign the default 169.xx.xx.xx address which actually indicates a failure to detect a "live" connection.

With some SACM models there is also an extra option to do an internal reset of modem by making use of a pinhole which will be seen on the back of the modem close to the RJ45 socket (In those models with that feature). This procedure is done with the modem still connected to the main power not during a reboot btw.

One of the above, or a combination of both, should get the modem giving a true IP to Windows and restoring a working connection via the ethernet card in most cases where a SACM is being used.

In the case of Set Top Boxes the procedure is somewhat different as any new NIC has to have its MAC address registered on the NTL network. I don't have the details to hand for that full process but I am sure somebody will add this detail in due course.

As with the original advice, these extra things to try are best done with any firewall turned off as this could interfere with the process but don't forget to reset the firewall once the new connection is working correctly.

Hope this helps.

21-02-2004, 11:52	#27
Sociable Inactive Join Date: Jun 2003 Location: Knebworth Age: 73 Posts: 1,816	Re: Cable Modem Setup Without the Broadjump CD ! All Stand Alone Cable Modems (SACM) need to bind themselves to the new Ethernet connection by having a full reboot of the modem by powering down and then connecting the ethernet cable and powering back up the modem. This associates the modem with the Ethernet card (NIC). This process has to be repeated any time the connection is changed either to or from USB or simply from one NIC to another. One option if you are stuck on the default Windows 169.xx.xx.xx address when trying to use ethernet for a SACM after having done the above is to do a full initialising of the modem by then disconnecting the modem from everything. (i.e. also disconnect from the main NTL cable once the power is off) Then power the modem back up with the cable still disconnected. Then power down the modem again and reconnect the main NTL cable and let the modem settle down and get its correct IP from NTL and at this point do a full reboot on the PC itself leaving the modem switched on so that it retains the connection. Windows should then see the correct connection on the modem after the reboot and not assign the default 169.xx.xx.xx address which actually indicates a failure to detect a "live" connection. With some SACM models there is also an extra option to do an internal reset of modem by making use of a pinhole which will be seen on the back of the modem close to the RJ45 socket (In those models with that feature). This procedure is done with the modem still connected to the main power not during a reboot btw. One of the above, or a combination of both, should get the modem giving a true IP to Windows and restoring a working connection via the ethernet card in most cases where a SACM is being used. In the case of Set Top Boxes the procedure is somewhat different as any new NIC has to have its MAC address registered on the NTL network. I don't have the details to hand for that full process but I am sure somebody will add this detail in due course. As with the original advice, these extra things to try are best done with any firewall turned off as this could interfere with the process but don't forget to reset the firewall once the new connection is working correctly. Hope this helps.