I have a problem with GNS3. Everything seems to work perfectly fine until I put a fourth router in the topology.
When I put 4th router it try to load the router but then it sais cant connect to hypervisor on port 7201
Can anyone help me? I can't figure out what the problem is.
Also if anyone knows, is there anyway where I can configure switches in GNS3 just like as routers with telnet?
There in no such option to connect with Telnet.
Check your .net file and make sure that you have port 7200 defined on the first instance, then 7201 on the second, etc. I have had problems with GNS3 not assigning 7200 and creating problems. GNS3 creates new ones depending on how the memory config is. By default that is set to 512MB. It can be changed in the Preferences|Dynamips|Hypervisor tab.
Let me know if that helps.