Cisco Catalyst 4500 Series Software Configuration Guide

CHAPTER
83-1
Catalyst 4500 Series Switch, Cisco IOS Software Configuration Guide - Cisco IOS XE 3.9.xE and IOS 15.2(5)Ex
83
Configuring Easy Virtual Network
Easy Virtual Network (EVN) is an IP-based virtualization technology that provides end-to-end
virtualization of two or more Layer-3 networks. You can use a single IP infrastructure to provide separate
virtual networks whose traffic paths remain isolated from each other.
This chapter contains the following sections
• Prerequisites for Configuring Easy Virtual Network, page 83-1
• Restrictions for EVN, page 83-1
• About Easy Virtual Network, page 83-2
• Configuring Easy Virtual Networks, page 83-14
• Configuration Examples for Configuring EVN, page 83-18
• Troubleshooting EVN Configuration, page 83-22
Prerequisites for Configuring Easy Virtual Network
• Implementing EVN in a network requires a single IP infrastructure that you want to virtualize into
two or more logical networks or L3VPNs. EVN provides path isolation for the traffic on the different
virtual networks.
• You must have a functioning campus design in place before adding virtualization to a network.
• You should understand virtual routing and forwarding (VRF) instances and how they are used to
maintain traffic separation across the network.
Restrictions for EVN
• EIGRP command inheritance is not supported on VNET interfaces.
• The vnet tag command does not support management VRFs.
• An EVN trunk is allowed on any interface that supports 802.1q encapsulation, such as Fast Ethernet,
Gigabit Ethernet, and port channels.
• There are additional platform and line-card restrictions for an EVN trunk. Check Cisco Feature
Navigator, for supported platforms and line cards.
• A single IP infrastructure can be virtualized to provide up to 32 virtual networks end-to-end.
• If an EVN trunk is configured on an interface, you cannot configure VRF-Lite on the same interface.

Cisco Catalyst 4500 Series Specifications

General

Series	Catalyst 4500 Series
Category	Switch
Layer Support	Layer 2, Layer 3
Form Factor	Modular chassis
Stackable	No
Chassis Slots	3, 6, 7, 10
Power Supply Options	AC, DC
Redundancy	Power supply, Supervisor engine
Network Management	Cisco IOS Software CLI, SNMP, Cisco Prime Infrastructure
Features	Security, QoS
Port Density	Up to 384 ports per chassis
Security Features	802.1X, ACLs, DHCP Snooping, Dynamic ARP Inspection, IP Source Guard
Supervisor Engine	8-E