A couple issues here, but I need some help figuring out what is best. Scenario is I have two 6513's, two 4510's and two 4507's. The 6513's are in a L3 core configuration with one L2 trunk between them. I have a L3 link to the 4510's and the 4507's. The 4510's and 4507's are all inter-connected via L2 trunks. The 4500 series switches are in one VTP domain, and the 6500's are in a separate VTP domain. The problem is, I have several VLAN's on the 6500's that I now need to pass over to the 4507's and I can set up a Trunk port between them, define the VLAN's in both domains and set the ports to nonegotiate, but I don't think that is the best solution long-term. If I change the VTP Domain name on the 6500's what risks am I taking? The 6500's are set to transparent, and one of the 4510's is set to server, all the rest are client. Thanks in advance for any direction you can give me on this issue.