Cisco Catalyst 4500 Series Administration Guide

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Software Configuration Guide—Release IOS XE 3.6.0E and IOS 15.2(2)E
OL_28731-01
Chapter 41 Configuring VRF-lite
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 41-2 is a simplified example of the physical connections in a network similar to that in
Figure 41-1. OSPF is the protocol used in VPN1, VPN2, and the global network. BGP is used in the CE
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 41-2 VRF-lite Configuration Example
Step 6
Switch(config-router-af)#
address-family ipv4 vrf vrf-name
Defines BGP parameters for PE to CE routing sessions and
enters VRF address-family mode.
Step 7
Switch(config-router-af)# neighbor
address remote-as as-number
Defines a BGP session between PE and CE routers.
Step 8
Switch(config-router-af)# neighbor
address activate
Activates the advertisement of the IPv4 address family.
Step 9
Switch(config-router-af)# end
Returns to privileged EXEC mode.
Step 10
Switch# show ip bgp [ipv4] [neighbors]
Verifies BGP configuration.
Step 11
Switch# copy running-config
startup-config
(Optional) Saves your entries in the configuration file.
Command Purpose
Catalyst 4500
Switch S8
Switch S20
VPN1
VPN2
CE
Global network
208.0.0.0
Fast
Ethernet
3/8
Fast
Ethernet
3/5
99722
Si
Router
PE
Catalyst 4500
Switch S9
CE
Si
Switch S10
108.0.0.0
Fast
Ethernet
3/7
Switch S11
118.0.0.0
Fast
Ethernet
3/11
Switch S16
168.0.0.0
Fast
Ethernet
3/3
VPN1
VPN2
Global network
Switch S13
Switch S14
Switch S15
CE = Customer edge device
PE = Provider edge router

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