Vrf-Lite Configuration Example - Cisco Catalyst 4500 Series Software Configuration Manual

Configuring VRF-lite for IPv4
Use the no router bgp autonomous-system-number global configuration command to delete the BGP
routing process. Use the command with keywords to delete routing characteristics.

VRF-lite Configuration Example

Figure 43-2
Figure
to PE connections. The example commands show how to configure the CE switch S8 and include the
VRF configuration for switches S20 and S11 and the PE router commands related to traffic with switch
S8. Commands for configuring the other switches are not included but would be similar.
Figure 43-2
Switch S20
Switch S10
Switch S11
Global network
Switch S16
Configuring Switch S8
On switch S8, enable routing and configure VRF.
Switch# configure terminal
Enter configuration commands, one per line.
Switch(config)# ip routing
Switch(config)# ip vrf v11
Switch(config-vrf)# rd 800:1
Switch(config-vrf)# route-target export 800:1
Switch(config-vrf)# route-target import 800:1
Switch(config-vrf)# exit
Switch(config)# ip vrf v12
Switch(config-vrf)# rd 800:2
Switch(config-vrf)# route-target export 800:2
Catalyst 4500 Series Switch, Cisco IOS Software Configuration Guide - Cisco IOS XE 3.9.xE and IOS 15.2(5)Ex
43-10
is a simplified example of the physical connections in a network similar to that in
43-1. OSPF is the protocol used in VPN1, VPN2, and the global network. BGP is used in the CE
VRF-lite Configuration Example
Catalyst 4500
VPN1
208.0.0.0
Fast
Ethernet
3/8
108.0.0.0
Fast
Ethernet
3/7
VPN2
118.0.0.0
Fast
Ethernet
3/11
168.0.0.0
Fast
Ethernet
3/3
Switch S8
Router
Si
CE PE
Fast
Ethernet
3/5
CE = Customer edge device
PE = Provider edge router
End with CNTL/Z.
Chapter 43 Configuring VRF-lite
Catalyst 4500
Switch S9
Si
Switch S13
Switch S14
CE
Global network
Switch S15
VPN1
VPN2