Enterasys 802.1Q User Manual page 78

Example 4, Isolating Network Traffic According to Protocol
6. Use the VLAN Forwarding Configuration screen to assign Port 1 to the Yellow VLAN and set
the frame type to tagged. With this configuration, the frames transmitted on Port 1 are tagged as
being from the Yellow VLAN.
If a frame associated with any protocol other than AppleTalk (for example, for the mail server)
is received on any of the Ports 2 through 8, the frame would be part of the Yellow VLAN and
transmitted out Port 1 as a tagged frame to Switch 3 and handled in the same manner as
previously described in the previous examples to route the frame to the Mail Server on the first
floor.
Any unicast frames received via Port 1 that are destined for a device in the Yellow VLAN are
transmitted to the correct device. Any broadcast frames received via Port 1 are transmitted to all
the devices in the Yellow VLAN and handled in a similar manner as previously described in
Example 2.
4-18 Examples