Using STP on a Network with Multiple VLANs 43
Figure10 Configuration that separates VLANs
To avoid any VLAN subdivision, it is recommended that all inter-Switch
connections are made members of all availabl e 802.1Q VLANs to ensure
connectivity at all times. For example, the connections between Switches
A and B, and between Switches A and C shoul d be 802.1Q tagged and
carrying VLANs 1 and 2 to ensure connect ivity.
For more information about VLAN Tagging, see Chapter 8 “Setting Up
Virtual LANs”.