Dell PowerSwitch S5212F-ON EMC SmartFabric OS10 User Guide Release 10.5.1 - Page 647

Redistribute iBGP route to OSPF When you configure the system redistribute BGP routes to OSPF, by default, the system redistributes only the eBGP routes. To redistribute iBGP routes to OSPF, configure a route-map and apply it to the redistribute command under the OSPF configuration. Sample configuration The following sample topology has two switches, Core 1 and Core 2, that are connected to each other and share routes using OSPF. A border router BR is connected to Core 1 and shares routes using internal BGP. Core 1 redistributes the routes that are learned by iBGP to OSPF to Core 2. Configuration on BR BR has BGP configured which forms BGP neighbor adjacency with Core 1. interface Loopback0 ip address 192.168.100.1/24 ! interface ethernet1/1/1 no shutdown no switchport ip address 10.10.9.1 ! router bgp 20 network 192.168.100.0 neighbor 10.10.9.2 remote-as 20 address-family ipv4 unicast Configuration on Core 1 Core 1 has both OSPF and BGP configured. Core 1 has OSPF neighbor adjacency with Core 2 and BGP neighbor adjacency with BR. The iBGPtoOSPF prefix-list is configured and applied to a route-map. The match ip address prefix-list iBGPtoOSPF command processes the iBGP-learned routes. ip prefix-list iBGPtoOSPF seq 15 permit 192.168.100.0/24 route-map iBGPtoOSPF permit 20 match ip address prefix-list iBGPtoOSPF ! interface ethernet1/1/1 no shutdown no switchport ip address 10.10.30.2/24 ip router ospf 10 area 0.0.0.0 ! interface ethernet1/1/2 no shutdown no switchport ip address 10.10.9.2/24 ! router ospf 10 router-id 2.2.2.2 redistribute bgp 20 route-map iBGPtoOSPF ! router bgp 20 Layer 3 647