I currently have several subnets connected via leased fiber back to a central facility. Each subnet has its own vlan as does the central office.
I need to configure 1 port on the 6509 at the central office to be on the same vlan as one of the remote subnets.
When I create the vlan on the 6509 in the central office, I can no longer access any of the hosts in the existing vlan.
If I remove the newly added vlan in the 6509, I get connectivity back. It has to be some kind of routing, but I can't figure it out.