From configuration guide on C3550 follow that device can support only 16 SVI/routed interface.
In network of my customer i've found at list 25 active SVI (VLAN) interfaces - they use C3550 for termination of remote offices. In additional OSPF is run. And they have no problem.
Does anyone know there is an restriction on number of SVI interface on C3550 or I can increase its number until 1024 with definite level of traffic volume?