I'm upgrading my network from a router on a stick design using 3500xl and 2900xl to a full routed links from build to build using 3560 and 4500. I'm running 6513 with sup720 in the core. The switch upgrades are in the distribution, and currently all vlans span whole network, 18 builds in all. I have 10 vlans total but only need 4 vlans in all builds. Is there a way trunk vlans over routed links. what ios images do i need, and commands to uses.