Configuring Vrf-Aware Services - Cisco Catalyst 4500 Series Software Configuration Manual

Chapter 43 Configuring VRF-lite
Command
Switch(config-vrf)# rd
Step 4
route-distinguisher
Switch(config-vrf)# route-target
Step 5
{
export
route-target-ext-community
Switch(config-vrf)# import map
Step 6
route-map
Switch(config-vrf)# interface
Step 7
interface-id
Switch(config-if)# ip vrf forwarding
Step 8
vrf-name
Switch(config-if)# end
Step 9
Switch# show ip vrf [brief | detail
Step 10
| interfaces] [vrf-name]
Switch# copy running-config
Step 11
startup-config
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.
VRF-aware services are implemented in platform-independent modules. VRF provides multiple routing
instances in Cisco IOS. Each platform has its own limit on the number of VRFs it supports.
VRF-aware services have the following characteristics:
•
•
| | }
import both
The user can ping a host in a user-specified VRF.
ARP entries are learned in separate VRFs. The user can display Address Resolution Protocol (ARP)
entries for specific VRFs.
Catalyst 4500 Series Switch, Cisco IOS Software Configuration Guide - Cisco IOS XE 3.9.xE and IOS 15.2(5)Ex
Purpose
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).
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).
This command is effective only if BGP is running.
Note
(Optional) Associates a route map with the VRF.
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.
Associates the VRF with the Layer 3 interface.
Returns to privileged EXEC mode.
Verifies the configuration. Displays information about the
configured VRFs.
(Optional) Saves your entries in the configuration file.
Configuring VRF-lite for IPv4
43-5