Hi Sir
What could make a hub router refuse to receive any external routes from one of his spokes although a distribute-list is configured on other spokes to prefer such spoke as asked in the lab?
Lab 39 Adv OSPF Task 2
R5 is connected via FR cloud1 to R2 (area 0) and cloud2 to R6 (nssa area) , and via ethernet to Cat-1 ( area 0). It is required to make R5 prefer R2 for all the external routes. According to the normal behaviour R5 will prefer cat-1.
Here is my ideas:
I tried to change in metrics while redistributing into OSPF (from EIGRP), knowing that redistribution is configured on R1 (which is directly connected to R2), R6 and Cat-1.
R2#sh ip route | in O N1
O N1 200.2.2.128 [110/2] via 139.10.120.1, 00:32:41, FastEthernet0/0
O N1 200.2.2.160 [110/ 2] via 139.10.120.1, 00:32:41, FastEthernet0/0
O N1 200.2.2.160 [110/ 2] via 139.10.120.1, 00:32:41, FastEthernet0/0
R5#sh ip route | in O N1
O N1 200.2.2.128 [110/564] via 139.10.65.6, 00:07:30, Serial0/0/1.65
O N1 200.2.2.160 [110/ 564] via 139.10.65.6, 00:07:30, Serial0/0/1.65
O N1 200.2.2.64 [110/564] via 139.10.65.6 , 00:07:30, Serial0/0/1.65
O N1 200.2.2.160 [110/ 564] via 139.10.65.6, 00:07:30, Serial0/0/1.65
O N1 200.2.2.64 [110/564] via 139.10.65.6 , 00:07:30, Serial0/0/1.65
This is the output after set distribute-list on Cat-1, R5 preferes R6 (although as shown above, the metrics is more prefered from R2). After setting a distribute-list on R6 to filter out again such routes ( supposed that now the only available path is via R2, R5 is not willing to recieve any routes from R2, it hasn't any external route in its routing table)
The very weired thing that when i close the vlan interface connecting R5 to Cat-1, the routes is prefered via R2 ?!
Any comments
