Hi everybody
I am working on a simple Toplogy of 3 Routers connected to a single router . I reach the step where I have to give an IP to each Fastethernet interfaces on every router. The problem is that, whe I try to type the command to assign IP to an interface in arouter, like for example this one:
R1(config-if)#ip address 192.168.0.1 255.255.255.0
I got this message:
% IP addresses may not be configured on L2 links.

I am using 3640 image(ver 12.3) on all routers. I am also using 3640 router image on Switches, but I add the NM-16ESW slot to act like a switch.
I tried "no switchport command" on port fa0/0 but still I get the same error! Then I also tried "ip routing" but in vain.

Please, advise me on this issue. Thank you very much for your help.

Strange forum like many others. No one replies even after so many days

This is probably because you were not quite clear enough in your first request, but you did attempt to explain, so I'll tell you what I need to know.

In GNS3, locate the GNS3 management console near the bottom of the screen. In the console, type show run. You should get some output like this:



That way I can build my config to match yours so I can help you.

If it is a router config issue, it is also a good idea to show the part of the config that you are having problems with (not the whole config, unless you don't know where the problem is)

For instance, you should now be able to use the config above to create a topology like mine (with 3 x 3650 routers with NM16-ESW cards).

And here's part of the config that shows I can't reproduce the error you explained:



And


So given that *I* don't have the problem, you might start looking at the IOS image that you are using. As you can see from the output above, I am using an image called c3640-js-mz.124-25a which makes it version 12.4(25a)

HTH

_________________
RedNectar
http://rednectar.net
@rednectarchris
GNS3 WorkBench-a VMware image of Ubuntu with GNS3 and VPCS installed and a collection of exercises/labs

This isn't related to some devices "reserving" the first two ports to itself, is it? I don't remember offhand which ones they are, but there's at least one device that forces you to avoid the first two FE interfaces.

/Probably wrong, but it's worth a shot.

If this is so, I haven't heard of it.

BUT, if you add the EtherSwitch router device, it will add a c3725 router with a NM-16ESW card, AND the default GNS3 baseconfig file will include:
so as to make as much as possible like a layer 2 switch.

But you have been working with a c3640, so that doesn't apply

_________________
RedNectar
http://rednectar.net
@rednectarchris
GNS3 WorkBench-a VMware image of Ubuntu with GNS3 and VPCS installed and a collection of exercises/labs

That's the one I was thinking of. My mistake!