Any ideas why this won't work??

JayrodEF

Hey all, just had a quick question. I have a 2514 router which I've succesfully set up to use as a home router. cable modem to 2514 to switch, DCHP assigned from ISP and then static on the other interface. The 2514 gives out addresses in the 10.0.0.0 network. IOS is 12.2(31). I'm trying to set up a 2611 to do the exact same thing with the two built-in interfaces, but I'm not having any luck. The 2611 has an 12.2(1) IOS. I copy the commands from the 2514 into a blank 2611 configuration. It assigned address ok to clients, and from a host, I can ping both interfaces, but can't get to the internet. Also, the interface which is being assigned an address from my ISP always seems to be brining down a weird ip address. Not the same as the 2514 gets or my d-link when I have that plugged in. Not even close. I know this isn't a lot of info, but I'm wondering if anyone has an idea at this point.

AlexMR

Copy both running-configuration files to notepad and compare them. It might be you are using the new router as your main router and it's not translating (?).

Do you have cable or DSL? PPPoE? are both the cisco router managing the connection to the ISP when they are up??

If that is the case check the NAT configuration.

JayrodEF

Yeah, I've compared the running configs of both the routers and they look the same. I'm actually not trying to run both of them at the same time. I'm just trying to replace the 2514 with the 2611. So when I have the 2611 hooked up, the 2514 is completely out of the picture. There's no reason a 2611 wouldn't be able to function in the manner I'm trying to get it to work is it?

JayrodEF

I fixed the problem for anyone who may have something simliar. I went ahead and assigned the same MAC address as my D-link router to the Internet interface on the 2611. It seemed the ISP liked that a bit better and assigned it a valid IP address. Things are working smooth through the 2600 now.

royal

Ya it's pretty much the same for the last 2 ISPs I had. When you sign up for the ISP and they take note of the MAC of the system that's hooked up; whether that may be a computer or a router. So if you use a computer hooked up directly to your cable modem and later hook up a router, you have to clone the MAC address of the system you originally had set up to allow your router to obtain an IP.