Cabletron Systems 802.1Q - Manual (Page 84)

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
Example 3, 1D Trunk Connection to 802.1Q VLAN Network . 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.