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OT: Cat 6500 IOS (not CatOS) posted 11/15/2002
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When running IOS on the Catalyst 6500, what is the difference between
the following:
First, put a bunch of interfaces (ports) into VLAN 20, including port
3/1, then configuring:
interface FastEthernet 3/1
 ip address


First, put a bunch of interfaces (ports) into VLAN 20 and then assign
the IP address 
to a logical VLAN interface itself:
interface VLAN 20
 ip address
Do these accomplish the same thing?
Another question, what makes an interface a 'layer 3' interface, just
the presence of a layer 3 address, or is there more to it?