Cisco: BGP Redistribute OSPF
sumber: https://community.cisco.com/t5/routing/ospf-to-bgp-redistribution/td-p/1165332
router ospf 6 router-id x.x.x.x auto-cost reference-bandwidth 10000 area 38 stub no-summary timers throttle spf 10 100 5000 timers throttle lsa all 10 100 5000 redistribute bgp 65500 metric 500 subnets network x.x.x.x 0.0.0.255 area 38
router bgp 65500 no synchronization bgp log-neighbor-changes redistribute ospf 6 metric 100 route-map ospf2bgp neighbor x.x.x.x remote-as xxxx no auto-summary
Redistribute intra & inter-are
router ospf 1 network 2.0.0.0 0.255.255.255 area 1 ! router bgp 100 redistribute ospf 1 !-- This redistributes only OSPF intra- and inter-area routes into BGP.
Redistribute external type-1 type2
Use the external keyword along with the redistribute command under router bgp to redistribute OSPF external routes into BGP. With the external keyword, you have three choices:
- redistribute both external type-1 and type-2 (Default)
- redistribute type-1
- redistribute type-2
router ospf 1 network 2.0.0.0 0.255.255.255 area 1 ! router bgp 100 redistribute ospf 1 match external 1 external 2 !--- This redistributes ONLY OSPF External routes, !--- but both type-1 and type-2. neighbor 3.3.3.3 remote-as 200 ! end
Redistribute NSSA
router ospf 1 network 2.0.0.0 0.255.255.255 area 1 nssa ! router bgp 100 redistribute ospf 1 match nssa-external 1 nssa-external 2
No Redistribute
router bgp 100 no redistribute ospf 1