User`s guide

Chapter 4: Examples
4-10 DIGITAL MultiSwitch 700 Port Based VLAN User’s Guide
Figure 4-6 Transmitting to Bridge 4
4. The File Server responds with a unicast frame to User A. All switches
between the File Server and User A have an entry in their respective
Source Address Tables identifying which port to use for forwarding
the frame to User A, MAC address “Y”, VLAN Red. All switches
update their Source Address Tables for the File Server’s MAC address
“Z”, VLAN Red combination as the frame is forwarded through the
switch fabric to User A. The 802.1d bridge update their Source
Address Tables based on the source MAC address and receive port and
the 802.Q switches update their databases based on the source MAC
address, VLAN, and receive port.
5. The frame from the File Server is received on Switch 2, and forwarded
to Switch 4 as a tagged frame classified as belonging to the Red
VLAN. Switch 4 removes the tag and forwards the frame to Bridge 1,
which in turn forwards the frame out of the port attached to User A.
All subsequent frames between User A and the File Server are
forwarded through the switch fabric in the same manner.
Floor 2
2263n16
Floor 3
1
3
2
Bridge 3
Bridge 4
Redco
Blue Industries
Red VLANBlue VLAN
File Server
2