Cisco Catalyst 4500 Series, Software Configuration Manual

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Catalyst 4500 Series Switch, Cisco IOS Software Configuration Guide - Cisco IOS XE 3.9.xE and IOS 15.2(5)Ex
Chapter 83 Configuring Easy Virtual Network
About Easy Virtual Network
Figure 83-1 Network without Virtualization
Virtual networks provide a coarse-grained segmentation of different user groups on one physical
network. By configuring virtual networks, you can virtualize a single IP infrastructure to provide a
number of virtual networks end to end. In the figure below, a single IP infrastructure is virtualized into
two VPNs by creating two VRFs, Red and Green.
Figure 83-2 Network with Virtualization
Laptop in Red
User group
Laptop in Green
User group
Server in Red
User group
Server in Green
User group
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L a ptop in Red
U s er gro u p
L a ptop in Green
U
s er gro u p
S erver in Red
U s er gro u p
S erver in Green
U s er gro u p
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E a ch as teri s k indic a te s VRF definition
E a ch d as hed line indic a te s edge interf a ce
P a r a llel s olid line s gro u p indic a te s tr u nk interf a ce
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