We would like to connect an ISP (small DSL line) to a 6500 switch. We have 2 kinds of Catalysts and thus 2 possibilities:
1) the old one where the Switch runs on CatOS and the MSFC runs on IOS (12.1(8a)E4)
2) the new one runs on IOS 12.2(18)SXF
Possibility 1) we would configure an interface Vlan x and the address of this interface has to be assigned with DHCP (ISP requires this). On the switch then we would assign a port in this particular vlan and connect the modem to this port.
Problem: it is not possible to assign a DHCP-address to this interface.
Possibility 2) we would like to make an interface a L3 interface (no switchport) and give this interface an address through DHCP as in 1). But this is not possible, we can only assign an interface a static address.
Routing and NATing is also configured so the only problem is the dynamic address-assignment.
Is there any solution for this problem?