say hello ospf

don't forget to issue un all first, then:

r2620_01#debug ip ospf hello

OSPF hello events debugging is on
r2620_01#
1d08h: OSPF: Rcv hello from 3.3.3.3 area 0 from Serial0/0 11.0.0.3
1d08h: OSPF: End of hello processing
1d08h: OSPF: Rcv hello from 2.2.2.2 area 0 from Serial0/1 10.0.0.2
1d08h: OSPF: End of hello processing
1d08h: OSPF: Send hello to 224.0.0.5 area 0 on FastEthernet0/0 from 192.168.1.50
1d08h: OSPF: Send hello to 224.0.0.5 area 0 on Serial0/0 from 11.0.0.1
1d08h: OSPF: Send hello to 224.0.0.5 area 0 on Serial0/1 from 10.0.0.1
1d08h: OSPF: Rcv hello from 100.0.0.1 area 0 from FastEthernet0/0 192.168.1.100
1d08h: OSPF: End of hello processing
1d08h: OSPF: Rcv hello from 3.3.3.3 area 0 from Serial0/0 11.0.0.3
1d08h: OSPF: End of hello processing
1d08h: OSPF: Rcv hello from 2.2.2.2 area 0 from Serial0/1 10.0.0.2
1d08h: OSPF: End of hello processing
1d08h: OSPF: Send hello to 224.0.0.5 area 0 on FastEthernet0/0 from 192.168.1.50
1d08h: OSPF: Send hello to 224.0.0.5 area 0 on Serial0/0 from 11.0.0.1
1d08h: OSPF: Send hello to 224.0.0.5 area 0 on Serial0/1 from 10.0.0.1
1d08h: OSPF: Rcv hello from 100.0.0.1 area 0 from FastEthernet0/0 192.168.1.100
1d08h: OSPF: End of hello processing
1d08h: OSPF: Rcv hello from 3.3.3.3 area 0 from Serial0/0 11.0.0.3
1d08h: OSPF: End of hello processing
1d08h: OSPF: Rcv hello from 2.2.2.2 area 0 from Serial0/1 10.0.0.2
1d08h: OSPF: End of hello processing
1d08h: OSPF: Send hello to 224.0.0.5 area 0 on FastEthernet0/0 from 192.168.1.50
1d08h: OSPF: Send hello to 224.0.0.5 area 0 on Serial0/0 from 11.0.0.1
1d08h: OSPF: Send hello to 224.0.0.5 area 0 on Serial0/1 from 10.0.0.1
1d08h: OSPF: Rcv hello from 100.0.0.1 area 0 from FastEthernet0/0 192.168.1.100
1d08h: OSPF: End of hello processing
1d08h: OSPF: Rcv hello from 3.3.3.3 area 0 from Serial0/0 11.0.0.3
1d08h: OSPF: End of hello processing
1d08h: OSPF: Rcv hello from 2.2.2.2 area 0 from Serial0/1 10.0.0.2
1d08h: OSPF: End of hello processing
1d08h: OSPF: Send hello to 224.0.0.5 area 0 on FastEthernet0/0 from 192.168.1.50
all possible debugging has been turned off
r2620_01#

it's a whole new world out there...