Cabletron Systems 802.1Q Manual De Usuario

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Chapter 4: Examples
4-18
802.1Q VLAN User’s Guide
Figure 4-11
Example 4, Isolating Traffic According to Protocol
4.4.1
Solving the Problem
Much of the existing network configuration can remain as it was for 
. However, 
Switch 3, Switch 5, and the devices that will make up Publication’s Grey 
VLAN have been added. 
Floor 1
Floor 2
Floor 3
Floor 4
1
Bridge 1
Bridge 2
Bridge 3
Red VLAN
Red VLAN
Blue VLAN
Blue VLAN
Blue VLAN
Blue VLAN
2599_18
User
802.1D Legacy Bridge
802.1Q VLAN-Aware Switch
User B
Server
2
4
3
4
1
1
2
3
Mail Server
Green VLAN
Green VLAN
Bridge 4
Red VLAN
Red VLAN
File Server
2
Grey VLAN
Grey VLAN
1
2
3
4
Printer
Publications
3
1
2
3
4
5
1
3
4
5
7
8
2
6
Y
Y
ellow VLAN
ellow VLAN
Green, Inc.