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4-27
Cisco 10000 Series Router Software Configuration Guide
OL-2226-23
Chapter 4 Configuring Multiprotocol Label Switching
Half-Duplex VRF
Hub and Spoke Sample Configuration with Half-Duplex VRFs
Example 4-11 shows how to connect two PPPoE clients to a single VRF pair on the spoke PE router
named Lipno. Although both PPPoE clients are configured in the same VRF, all communication occurs
using the hub PE router. Half-duplex VRFs are configured on the spoke PE. The client configuration is
downloaded to the spoke PE from the RADIUS server.
Example 4-11 Configuring the Spoke PE Router
aaa new-model
!
aaa group server radius R
server 22.0.20.26 auth-port 1812 acct-port 1813
!
aaa authentication ppp default group radius
aaa authorization network default group radius
!
ip vrf D
description Downstream VRF - to spokes
rd 1:8
route-target export 1:100
!
ip vrf U
description Upstream VRF - to hub
rd 1:0
route-target import 1:0
!
vpdn enable
!
vpdn-group U
accept-dialin
protocol pppoe
virtual-template 1
!
interface Loopback0
ip address 100.0.0.8 255.255.255.255
!
interface Loopback2
ip unnumbered Loopback2
ip vrf forwarding U
ip address 2.0.0.8 255.255.255.255
!
interface ATM2/0
pvc 3/100
protocol pppoe
!
pvc 3/101
protocol pppoe
!
interface Virtual-Template1
no ip address
ppp authentication chap
!
router bgp 1
no synchronization
neighbor 100.0.0.34 remote-as 1
neighbor 100.0.0.34 update-source Loopback0
no auto-summary
!
address-family vpnv4
neighbor 100.0.0.34 activate
neighbor 100.0.0.34 send-community extended