Table of Contents
Advertisement
Redco
User A
Floor 4
Floor 3
Blue Industries
Floor 2
3. When Switch 2 receives the tagged frame on its Port 2, it checks the
frame's VLAN Tag Header and determines that the frame is classified
as belonging to the Red VLAN, and that the frame is a broadcast
frame. Switch 2 forwards the frame to all ports in the Red VLAN
Forwarding List excluding Port 2, which received the frame. In this
example, the only eligible port is Port 3, which connects to Bridge 4.
Switch 2 checks its Forwarding List, which specifies that the VLAN
frame type for that port is untagged. Switch 2 then updates its Source
Address Table in FID 3 for MAC address "Y" if necessary. The
untagged frame is then transmitted out Port 3 to Bridge 4. Bridge 4
forwards the frame out all its ports because it is a broadcast frame, and
the server receives it as shown in Figure 4-6.
802.1Q VLAN User's Guide
2
Bridge 1
1
3
4
Red VLAN
4
2
Bridge 3
1
3
2
Blue VLAN
Figure 4-5 Transmitting to Switch 4
Blue Industries
Bridge 2
Blue VLAN
Redco
Bridge 4
Red VLAN
Example 2
File Server
2263_15
4-9
Advertisement
Table of Contents
