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Example 2, VLANs Across Multiple Switches
4-4 Examples
Figure 4-3 Example 2, VLANs Across Multiple Switches
4.2.1 Solving the Problem
To solve the problem in this example, the users are assigned to VLANs using Switch 4 and Switch
2 as shown in Figure 4-3. Redco users are assigned to the Red VLAN and Blue Industries users to
the Blue VLAN. The following information shows how Switch 4 and Switch 2 are configured to
create the two VLANs to isolate the users of the two companies from one another on the network
using the existing infrastructure.
Floor 1
Floor 2
Floor 3
Floor 4
1
Bridge 1 Bridge 2
Bridge 3
Bridge 4
Redco
Redco
Blue Industries
Red VLAN
Red VLAN
Red VLAN
Red VLAN
Blue VLAN
Blue VLAN
Blue VLAN
Blue VLAN
22632_13
User 802.1D Legacy Bridge 802.1Q VLAN Aware Switch
File Server
User A
File Server
2
Blue Industries
4
2
3
4
1
2
3
File Server