Cisco Catalyst 4500 Series Configuration Guide

39-5
Software Configuration Guide—Release IOS XE 3.3.0SG and IOS 15.1(1)SG
OL-25340-01
Chapter 39 Configuring VRF-lite
Configuring VRFs
Configuring VRFs
To configure one or more VRFs, perform this task:
Note For complete syntax and usage information for the following commands, see the switch command
reference for this release and see the Cisco IOS Switching Services Command Reference at:
http://www.cisco.com/en/US/docs/ios/ipswitch/command/reference/isw_book.html
Use the no ip vrf vrf-name global configuration command to delete a VRF and to remove all interfaces
from it. Use the no ip vrf forwarding interface configuration command to remove an interface from the
VRF.
Configuring VRF-Aware Services
IP services can be configured on global interfaces and within the global routing instance. IP services are
enhanced to run on multiple routing instances; they are VRF-aware. Any configured VRF in the system
can be specified for a VRF-aware service.
Command Purpose
Step 1
Switch# configure terminal
Enters global configuration mode.
Step 2
Switch(config)# ip routing
Enables IP routing.
Step 3
Switch(config)# ip vrf vrf-name
Names the VRF and enters VRF configuration mode.
Step 4
Switch(config-vrf)# rd
route-distinguisher
Creates a VRF table by specifying a route distinguisher.
Enter either an AS number and an arbitrary number
(xxx:y) or an IP address and arbitrary number
(A.B.C.D:y).
Step 5
Switch(config-vrf)# route-target
{export | import | both}
route-target-ext-community
Creates a list of import, export, or import and export route
target communities for the specified VRF. Enter either an
AS system number and an arbitrary number (xxx:y) or an
IP address and an arbitrary number (A.B.C.D:y).
Note This command is effective only if BGP is running.
Step 6
Switch(config-vrf)# import map
route-map
(Optional) Associates a route map with the VRF.
Step 7
Switch(config-vrf)# interface
interface-id
Enters interface configuration mode and specify the Layer
3 interface to be associated with the VRF. The interface
can be a routed port or SVI.
Step 8
Switch(config-if)# ip vrf forwarding
vrf-name
Associates the VRF with the Layer 3 interface.
Step 9
Switch(config-if)# end
Returns to privileged EXEC mode.
Step 10
Switch# show ip vrf [brief | detail
| interfaces] [vrf-name]
Verifies the configuration. Displays information about the
configured VRFs.
Step 11
Switch# copy running-config
startup-config
(Optional) Saves your entries in the configuration file.

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