Multicast and Routing Guide K/KA/KB.15.15

ip prefix-list "Odds" seq 10 permit 10.1.13.1 255.255.255.0 ge 24 le 24
Then matching that prefix-list in a route map:
route-map "PermitOdds" permit seq 10
match ip address prefix-list "Odds"
exit
And finally applying that route map to the redistribution of RIP routes in the North router:
router ospf
area backbone
redistribute connected
redistribute rip route-map "PermitOdds"
exit
The result of this is to permit redistribution of routes 10.1.11.x and 10.1.13.x, and to deny
redistribution of routes 10.1.12.x and 10.1.14.x. (Routes 10.1.15.x and 10.1.16.x are redistributed
by the redistribute connected command.) This occurs throughout the OSPF domain, and
is propagated through redistribution by the South router into the southern RIP domain.
For instance, in the OSPF domain the route map of the East router becomes:
East(config)# show ip route
IP Route Entries
Destination Gateway VLAN Type Sub-Type Metric Dist.
--------------- --------------- ---- --------- ---------- ---------- -----
10.1.11.0/24 10.3.32.1 32 ospf External2 10 110
10.1.13.0/24 10.3.32.1 32 ospf External2 10 110
10.1.15.0/24 10.3.32.1 32 ospf External2 10 110
10.1.16.0/24 10.3.32.1 32 ospf External2 10 110
10.2.21.0/24 10.3.33.2 33 ospf External2 10 110
10.2.22.0/24 10.3.33.2 33 ospf External2 10 110
10.2.23.0/24 10.3.33.2 33 ospf External2 10 110
10.2.29.0/24 10.3.33.2 33 ospf External2 10 110
10.3.31.0/24 10.3.32.1 32 ospf IntraArea 2 110
10.3.31.0/24 10.3.33.2 33 ospf IntraArea 2 110
10.3.32.0/24 VLAN32 32 connected 1 0
10.3.33.0/24 VLAN33 33 connected 1 0
10.3.34.0/24 VLAN34 34 connected 1 0
10.3.37.0/24 10.3.33.2 33 ospf IntraArea 2 110
127.0.0.0/8 reject static 0 0
127.0.0.1/32 lo0 connected 1 0
In the southern RIP domain, the route map of the Southeast router becomes:
Southeast(config)# show ip route
IP Route Entries
Destination Gateway VLAN Type Sub-Type Metric Dist.
--------------- --------------- ---- --------- ---------- ---------- -----
10.1.11.0/24 10.2.21.1 21 rip 2 120
10.1.13.0/24 10.2.21.1 21 rip 2 120
10.1.15.0/24 10.2.21.1 21 rip 2 120
10.1.16.0/24 10.2.21.1 21 rip 2 120
10.2.21.0/24 VLAN21 21 connected 1 0
10.2.22.0/24 VLAN22 22 connected 1 0
10.2.23.0/24 VLAN23 23 connected 1 0
10.2.29.0/24 10.2.21.1 21 rip 2 120
10.3.31.0/24 10.2.21.1 21 rip 2 120
10.3.32.0/24 10.2.21.1 21 rip 2 120
Using route policy in route redistribution 219