In this example, the VLAN definitions are extended to switches A and B. This gives only a single blocked port per VLAN and allows the removal of all redundant links by removing switch A or B from the network.
Impact of Layer 3 Switching.
The IP routing operational mode of the
•Building a forwarding table, and exchanging information with its peers using routing protocols.
•Receiving packets and forwarding them to the correct interface based upon their destination address
With layer 3 switching, there is no performance penalty to introducing a routing hop and creating an additional segment of the network.
