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2 ip addresses needed to use or not use router?

Last response: in Networking
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March 12, 2013 9:50:41 PM

To solve some slow downloading problems my internet provider asked me if I was using a router, and if so, to take it out and test the download speeds. I do have one (wired) and I did remove it and then... no internet connection.
I asked the internet provider what was going on and they said that I needed another dynamic ip address when I did not use the router. In other words, I had to have from them a separate ip address when I used the router, and another one for when I took out the router.

Seems odd to me, because when i connected the router originally I don't remember anything about another ip address from the internet provider.

What is going on here? Is it true that two ip addressed must be provided to use or not use the router?

XP Home SP3, emachines t5026, Dlink ebr-2310 router, between internet cable and PC. (Planning to make a home network adding my laptop. Nothing complicated)
March 12, 2013 10:34:18 PM

did you reboot the modem after you took out the router?
March 13, 2013 6:53:59 AM

Your "line" already has an IP address assigned to the routers MAC address. You need to reboot the modem to force the ISP's DHCP server to assign a new IP address to the MAC address of your PC. Just power off your modem for a couple of minutes, and then power it back on, refresh your IP in your PC assuming you have it set dynamically. Of course that is done by rebooting as well... The PC this time...
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March 13, 2013 8:49:32 PM

Did you connect the computer to the modem after you unhooked the router? The tech you spoke to should have told you to reboot the computer and/or the modem already.
March 13, 2013 9:37:44 PM

Emerald said:
did you reboot the modem after you took out the router?


No, did not think of it, and was not told to by the tech. Thanks
March 13, 2013 9:38:46 PM

dbhosttexas said:
Your "line" already has an IP address assigned to the routers MAC address. You need to reboot the modem to force the ISP's DHCP server to assign a new IP address to the MAC address of your PC. Just power off your modem for a couple of minutes, and then power it back on, refresh your IP in your PC assuming you have it set dynamically. Of course that is done by rebooting as well... The PC this time...


Thanks.
March 13, 2013 9:41:00 PM

hang-the-9 said:
Did you connect the computer to the modem after you unhooked the router? The tech you spoke to should have told you to reboot the computer and/or the modem already.


No the tech said nothing except he did something at his end. Which was probably to reboot the modem, from what I read of the answers here. And that he assigned me a second ip address, at no charge. Still can't figure out why I need two ip addresses. Thanks
!