Dell PowerConnect 8024 User Configuration Manual page 1017

ip ospf network point-to-point
exit
interface te1/0/22
switchport mode trunk
exit
interface loopback 0
ip address 172.21.254.2 255.255.255.255
exit
exit
4 Configure R3:
terminal length 0
config
line console
serial timeout 0
exit
ip routing
router ospf
router-id 3.3.3.3
network 172.21.0.0 0.0.255.255 area 0
timers spf 3 5
exit
vlan 103
exit
interface vlan 103
ip address 172.21.1.1 255.255.255.0
routing
ip ospf hello-interval 1
ip ospf dead-interval 4
ip ospf network point-to-point
exit
interface te1/0/21
switchport mode trunk
exit
interface loopback 0
ip address 172.21.254.2 255.255.255.255
exit
exit
Discussion
With flood blocking disabled on all interfaces, sending a T3 summary LSA
from R3 to R0 will cause R0 to forward the LSA on its interface to R1.
Enabling flood blocking on R0's interface to R1 will inhibit this behavior.
(R0)(config-if-vlan101)ip ospf database-filter all out
Configuring OSPF and OSPFv3
1017