GNS3 interface problem

damien2008

Hi,

When using GNS3 and VPCS I have 2 PCs connected though a generic Ethernet switch.
VPCS1 can successfully ping VPCS2 – everything OK - see 1st pic

When using a 3700 router issued with the no ip routing command to act as a layer 2 switch I cannot ping between the 2 VPCS PCs
I have put a NM-16ESW slot in R3 – see 2^nd pic
The show ip interface brief command from R3 lists f 1/1 and f 1/2 as line status UP but protocol DOWN. – see 3^rd pic
This is not expected on a switch interface, I have tried issueing a no shutdown command under the interfaces but still cant get them in an UP and UP status.
Anyone experienced this ?

Just to be clear I am talking about the f 1/1 and f 1/2 R3 interfaces and not the f 0/0 and f 0/1 R3 interfaces which are administratively shut down.

OfWolfAndMan

Do your show command in VPCS. Do you have the right UDP ports configured on the host?

damien2008

Managed to fix via trial and error
When connecting hosts to a router or router acting as a switch you have to reload the device for the interfaces to come up, you cannot connect new hosts or devices whilst the device is running