Hi Brad, As it can be seen your VPNV4 peering is like this R1Core (PE) <– >CoreCentral <– >R2Core (PE). Therefore R1 has a peering to Core with iBGP and VPNV4 is activated. Good R1 has a knowledge of VRF and it can import and export the respective VPNV4 addresses to vrf but that is not true for Rcore. The other thing is the core has a iBGP peerings with both routers so it will not pass the route that it got from one to another. Even if you can solve this issue with route reflector or confederation, you have to work around to get the VPNV4 traffic around. May be you have to configure the Core with vrf .... The best way is to peer the two PE routers directly. The other thing is it is not a must to peer with loopbacks Best Regards, Solomon ________________________________ From: Brad Edgeworth <[email protected]> To: "[email protected]" <[email protected]> Sent: Sat, November 21, 2009 8:48:52 AM Subject: [OSL | CCIE_RS] Need help with L3 MPLS So I’m trying to practice MPLS L3 VPN with routing OSPF across it. I’m having difficulties with my connectivity from one CE device to the other CE device. Before I started I had plain MPLS working on a flat network end to end. I’m successful with getting my OSPF routes across the cloud but need help figuring out why packets won’t travel. Can someone find what I’m missing? -brad Setup is straightforward: R1 (CE) – R1Core (PE) – CoreCentral – R2Core (PE) – R2 (CE) 10.x.x.x subnets are data networks for the CE 192.168.x.x subnets are the provider network Routing portion of the configs listed below: **R1Core router ospf 100 vrf BRAD domain-id 0.0.0.1 log-adjacency-changes redistribute bgp 100 subnets network 10.32.0.0 0.0.255.255 area 1 router ospf 1 log-adjacency-changes network 172.0.0.0 0.255.255.255 area 1 network 192.168.0.0 0.0.255.255 area 0 router bgp 100 no bgp default ipv4-unicast bgp log-neighbor-changes neighbor 192.168.1.254 remote-as 100 ! address-family vpnv4 neighbor 192.168.1.254 activate neighbor 192.168.1.254 send-community both exit-address-family ! address-family ipv4 vrf BRAD redistribute connected redistribute ospf 100 vrf BRAD no synchronization exit-address-family **** CoreCentral router ospf 1 mpls ldp autoconfig log-adjacency-changes network 0.0.0.0 255.255.255.255 area 0 router bgp 100 no bgp default ipv4-unicast bgp log-neighbor-changes neighbor 192.168.1.1 remote-as 100 neighbor 192.168.2.1 remote-as 100 ! address-family vpnv4 neighbor 192.168.1.1 activate neighbor 192.168.1.1 send-community extended neighbor 192.168.1.1 route-reflector-client neighbor 192.168.2.1 activate neighbor 192.168.2.1 send-community extended neighbor 192.168.2.1 route-reflector-client exit-address-family **R2Core router ospf 100 vrf BRAD domain-id 0.0.0.2 log-adjacency-changes redistribute bgp 100 subnets network 10.64.0.0 0.0.255.255 area 2 router ospf 1 log-adjacency-changes network 172.0.0.0 0.255.255.255 area 2 network 192.168.0.0 0.0.255.255 area 0 router bgp 100 no bgp default ipv4-unicast bgp log-neighbor-changes neighbor 192.168.2.254 remote-as 100 ! address-family vpnv4 neighbor 192.168.2.254 activate neighbor 192.168.2.254 send-community both exit-address-family ! address-family ipv4 vrf BRAD redistribute connected redistribute ospf 100 vrf BRAD no synchronization exit-address-family
_______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
