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Routing Function

The Routing function is logically independent from and sits "on top" of the Layer 2 VLANs. The function of the Inter-VLAN router is to route traffic between VLANs (subnets). The router has an "interface", or "virtual port", for each VLAN that it is routing traffic.

This interface is configured similarly to a physical interface, but is not associated with any particular physical interface.(Figure 92)

For more detailed information on the switch routing operations, see "Routing with Layer 2 and Layer 3 Modules", in Introduction.

Figure 92: Intra and Inter VLAN Bridging and Routing



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