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DES-7200 Configuration Guide Chapter 2 Configuring BGP IP VPN
2-99
The configuration scheme is as follows:
PE1-AS1:
# Configure the loopback interface.
DES-7200# configure terminal
DES-7200(config)# interface loopback 0
DES-7200(config-if-Loopback 0)# ip address 1.1.1.1 255.255.255.255
# Configure the VRF.
Create one VRF instance: VPN1. Set the RD and RT values, and associate the VRF with the
corresponding interface.
DES-7200# configure terminal
DES-7200(config)# ip vrf VPN1
DES-7200(config-vrf)# rd 1:100
DES-7200(config-vrf)# route-target both 1:100
DES-7200(config-vrf)# end
# Associate the VRF with an interface.
DES-7200# configure terminal
DES-7200(config)# interface gigabitethernet 1/1
# 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 1/1)# no switchport
DES-7200(config-if-GigabitEthernet 1/1)# ip vrf forwarding VPN1
DES-7200(config-if-GigabitEthernet 1/1)# ip address 192.168.16.2
255.255.255.0
DES-7200(config-if-GigabitEthernet 1/1)# end
# Enable BGP and set up MP-IBGP sessions with ASBR1.
DES-7200# configure terminal
DES-7200(config)# router bgp 1
DES-7200(config-router)# neighbor 3.3.3.3 remote-as 1
DES-7200(config-router)# neighbor 3.3.3.3 update-source loopback 0
DES-7200(config-router)# address-family vpnv4
DES-7200(config-router-af)# neighbor 3.3.3.3 activate
DES-7200(config-router-af)# end
# Configure CE neighbors through EBGP.