Information Technology Reference
In-Depth Information
Example 10-9 shows a sample RIPv2 configuration. In Example 10-9, BGP AS 100 routes
are redistributed into RIP. These are the routes received from the remote PEs. Before the
redistribution, a VPNv4 prefix is filtered based on the RT import policy for the VRF.
Example 10-9
Sample PE-CE Routing Protocol Configuration
router rip
version 2
!
address-family ipv4 vrf vpn58
redistribute bgp 100 metric 3
no auto-summary
exit-address-family
Example 10-10 shows a sample BGP configuration for VPNv4. This example has two
remote PE devices: 192.168.22.2 and 192.168.77.7. These are loopback addresses of
the remote PE devices. For the IGP labels to be assigned properly, do not summarize the
loopback addresses.
Example 10-10
Sample BGP Configuration for VPNv4 Prefixes
router bgp 100
no synchronization
neighbor 192.168.22.2 remote-as 100
neighbor 192.168.22.2 update-source Loopback0
neighbor 192.168.77.7 remote-as 100
neighbor 192.168.77.7 update-source Loopback0
no auto-summary
!
address-family ipv4 vrf vpn58
redistribute rip
no auto-summary
no synchronization
exit-address-family
!
address-family vpnv4
neighbor 192.168.22.2 activate
neighbor 192.168.22.2 send-community extended
neighbor 192.168.77.7 activate
neighbor 192.168.77.7 send-community extended
no auto-summary
exit-address-family
There are three segments in the BGP configurations:
•
Configurations under
router bgp
•
Configurations under an IPv4 address family for a VRF
•
Configurations under the VPNv4 address family
