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DES-7200 Configuration Guide Chapter 2 Configuring BGP IP VPN
2-92
Configuration procedure:
PE1:
# Configure the loopback interface.
DES-7200# configure terminal
DES-7200(config)# interface loopback 0
DES-7200(config-if-Loopback 0)# ip address 172.168.0.1 255.255.255.255
# Configure the VRF.
Create one VRF instance: spoke1. Set the RD and RT values, and associate the VPNA with the
corresponding interface.
DES-7200# configure terminal
DES-7200(config)# ip vrf spoke1
DES-7200(config-vrf)# rd 1:100
DES-7200(config-vrf)# route-target export 1:200
DES-7200(config-vrf)# route-target import 1:100
DES-7200(config-vrf)# end
# Associate the VRF with an interface.
DES-7200# configure terminal
DES-7200(config)# interface gigabitethernet 1/0
# The no switchport command is used to switch the port mode on switches to routed port mode.
It is not applicable to routers. You are not required to run this command on routers.
DES-7200(config-if-GigabitEthernet 1/0)# no switchport
DES-7200(config-if-GigabitEthernet 1/0)# ip vrf forwarding spoke1
DES-7200(config-if-GigabitEthernet 1/0)# ip address 192.168.100.2 255.255.255.0
DES-7200(config-if-GigabitEthernet 1/0)# end
# Enable BGP and set up MP-IBGP sessions with PE3.
DES-7200# configure terminal
DES-7200(config)# router bgp 1
DES-7200(config-router)# neighbor 172.168.0.3 remote-as 1
DES-7200(config-router)# neighbor 172.168.0.3 update-source loopback 0
DES-7200(config-router)# address-family vpnv4
DES-7200(config-router-af)# neighbor 172.168.0.3 activate
DES-7200(config-router-af)# neighbor 172.168.0.3 allowas-in
DES-7200(config-router-af)# end
# Configure CE neighbors through EBGP.