Here is the simple scenario
R0---> serial link 192.168.1.0 /30 EIGRP----->R1 serial link ---> 192.168.1.4 /30 OSPF area 0 -----> R2
R0 is connected to R1 on serial link with subnet 192.168.1.0 /30 EIGRP neighbor relationship formed ( no -auto-summary configured )
R1 is connected to R2 on serial link with subnet 192.168.1.4 /30 OSPF area 0 neighbor relationship formed.
No other networks are published in any of the routers.
So far there are no routes learned either by EIGRP or by OSPF all are connected routers.
on R1 we redistributed ospf into eigrp and vice-a-versa
router eigrp 10
redistribute ospf 11 metric 2000 0 255 1 1500
network 192.168.1.0 0.0.0.3
router ospf 11
redistribute eigrp 10 subnets
network 192.168.1.4 0.0.0.3 area 0
The routing tables on R0 it shows only connected network
Gateway of last resort is not set
192.168.1.0/30 is subnetted, 1 subnets
C 192.168.1.0 is directly connected, Serial1/0
It do not show the 192.168.1.4 /30 subnet, on this subnet OSPF is enabled on R1
now if we see the R2 router routing table :
192.168.1.0/30 is subnetted, 2 subnets
O E2 192.168.1.0 [110/20] via 192.168.1.5, 00:20:46, Serial1/0
C 192.168.1.4 is directly connected, Serial1/0
It shows the 192.168.1.0 /30 subnet on which Eigrp is enabled on R1.
Why is it so that only one subnet is getting redistribued into OSPF, why OSPF enabled interface subnet is not getting redistributed in EIGRP?
But subnets in OSPF on router R2 , are appearing in R0 routing table, redistribution is working ok for all subnets except the
connected subnet 192.168.1.4 /30.
Please share the experience.