I have two Cisco Catalyst 500 switches that are generating errors. The error is specific to ports on each switch. The error states a VLAN mismatch. The switches are linked together by a port on each switch. However, the VLANS names associated with the ports are different. For example Switch1 port 2 is a member of VLAN3 and Switch2 port 4 is a member of VLAN1. If you are linking two switches together do you have to use the same VLAN name?