I think that E3200 doesn't support more than one vlan. If your switch is a layer 3 you can configure the port that connects to E3200 as a Layer 3 port and configure and ip address in the same subnet as router. Then on the router you can configure static routes to point to subnets behind the switch. Also on the switch configure a default route to go to the router ip address. Hope this helps Eugen ... View more

Are the clients running the same OS? Does the core switch do any routing? ... View more

Hi Radim, you can have as many as 1000 or you can have only 4 ( 2 connected and 2 static), that depends how the network is subneted and configured. Hope this helps Eugen ... View more

A suggestion is try removing "ip default-gateway...." commands and replace them with a default static route on switches. Hope it helps Eugen ... View more

Is the link from L2 to Router/Firewall a trunk? I guess from your topology that Vlan 44 goes directly to firewall, and all other vlans goes by L3 switch. If this is correct, your link from L3 G3/1 to firewall should be a trunk, but your G3/1 is configured as an access port, since only vlan 2 goes out. You need to configure that port as a trunk to be able to carry traffic from all vlans. Hope this helps Eugen ... View more

Have you tried adding "ip policy route-map name" to interfaces? ... View more

Hi Stephane, Have a read thru this article, http://www.omnisecu.com/cisco-certified-network-associate-ccna/topology-changes-in-spanning-tree-protocol-stp.htm Hope it helps Eugen ... View more

If the requirements are to use bridged interfaces than your config should work. Usualy routers provide intervlan routing and since you have only 2 vlans in your network I would configure each interface with ip addresses in each vlan and reduce the strain on the CPU. But that is just an opinion, you should consider other advice as well. Regards Eugen ... View more

Port security enabled and configured would have also helped with the loop prevention. ... View more

Did you check for duplicate mac addresses in the binding table? Hope this helps Eugen ... View more

Thats good. Can you also post the output of "sh version". ... View more

You don't need to create vlan if you are using physical interfaces. Just give ip address for each interface in respective vlan. If you want to use subinterfaces (router-on-a-stick), then you can assign that subinterface to a vlan and need to have a trunk link between the router and switch. In gns3 you can configure a router with switchports (has a module with 16 ports) to act as a switch, where you configure ports, vlans and assign them to vlans. The switch in gns3 is not configurable, except to add ports to it. Hope this helps Eugen ... View more