I ran across a task that asked the following:
Cat2 will always prefer OSPF routes from R5 (... over R6)
The DSG has the following solution:
Cat2
config t
access-list 63 permit any
router ospf 1
distance 109 136.10.5.5 0.0.0.0 63
Whenever I tried, though, the administrative distance was changed to 109 to
ALL advertising routers. I did some research online and this seems to be
the normal behavior in which you cannot change the distance for just a
single OSPF advertising neighbor. I wanted to verify this with anyone else
who may have encountered the same issue.
S2(config-router)#do sh ip route ospf
136.10.0.0/16 is variably subnetted, 9 subnets, 5 masks
O IA 136.10.24.2/32 [109/65] via 136.10.56.6, 00:11:09, Vlan56
[109/65] via 136.10.56.5, 00:11:09, Vlan56
O IA 136.10.25.0/30 [109/65] via 136.10.56.5, 00:11:09, Vlan56
O IA 136.10.24.4/32 [109/129] via 136.10.56.6, 00:11:09, Vlan56
[109/129] via 136.10.56.5, 00:11:09, Vlan56
O IA 136.10.100.6/32 [110/1] via 136.10.56.6, 00:11:09, Vlan56
O IA 136.10.100.5/32 [109/1] via 136.10.56.5, 00:11:09, Vlan56
O IA 136.10.100.2/32 [109/65] via 136.10.56.6, 00:11:09, Vlan56
[109/65] via 136.10.56.5, 00:11:09, Vlan56
136.16.0.0/16 is variably subnetted, 7 subnets, 2 masks
O IA 136.16.6.6/32 [110/2] via 136.10.56.6, 00:11:09, Vlan56
O IA 136.16.5.5/32 [109/2] via 136.10.56.5, 00:11:09, Vlan56
O IA 136.16.4.4/32 [109/130] via 136.10.56.6, 00:11:09, Vlan56
[109/130] via 136.10.56.5, 00:11:09, Vlan56
O IA 136.16.2.2/32 [109/66] via 136.10.56.6, 00:11:10, Vlan56
[109/66] via 136.10.56.5, 00:11:10, Vlan56
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