The 2950 switch is a layer 2 only switch. It can only have one IP address, which is used for management purposes. If you need to route between VLANs on a switch, you need a switch that can support a layer 3 image.
It is a subtle point but it is important to understand the difference between having multiple VLANs on the switch and having multiple VLAN interfaces on the switch.The 2950 is a layer 2 switch and as such it does support having multiple VLANs. You can define multiple VLANs and can assign ports/interfaces to multiple VLANs, and can forward at layer 2 among the multiple VLANs. On a layer 2 switch you can have only a single VLAN interface. The VLAN interface is a layer 3 entity (where the VLAN is a layer 2 entity). On the layer 3 switch the layer 3 VLAN interface is used for management purposes. Having a VLAN interface or not having a VLAN interface does not impact the switch forwarding at layer 2. Having the layer 3 VLAN interface gives us the ability to access the switch remotely and to manage the switch.
If it were a layer 3 switch instead of a layer 2 switch it would support multiple VLAN interfaces. But a layer 2 switch can have only a single active VLAN interface.
This is actually a pretty cool feature, i didn't even know it existed until I was looking for a solution to advertise a subnet (prefix in BGP talk), only if a certain condition existed. This is exactly what conditional advertisements does
j ai une question j ai achete un routeur cisco 887VA-k9 , je le configuré avec la configuration ci- dessous
si je le lier avec mon pc portable sur l un de ses ports directement ça marche toute est bien ( la connexion internet + m...
Attached policy provides CLI access to the Cisco 4G router over text messaging. Two files are in the attached .tar file:
2. PDF with instructions on how to load and use the .tcl file.