Configuring OSPF and OSPFv3 977
passive-interface default Configure OSPF interfaces as passive by default.
This command overrides any interface-level passive mode 
settings.OSPF does not form adjacencies on passive 
interfaces but does advertise attached networks as stub 
networks.
timers spf 
delay-time 
hold-time
Specify the SPF delay and hold time.
•
delay-time
 — SPF delay time. (Range: 0–65535 seconds)
•
hold-time
 — SPF hold time. (Range: 0–65535 seconds)
exit Exit to Global Configuration mode.
exit Exit to Privileged EXEC mode.
show ip ospf View OSPF global configuration and status.
show ip ospf statistics View OSPF routing table calculation statistics.
clear ip ospf
 
[{
configuration
 | 
redistribution
 | 
counters
 
| 
neighbor
 [
interface
 
vlan
 
vlan-id
 [
neighbor-id
]]}]
Reset specific OSPF states. If no parameters are specified, 
OSPF is disabled and then re-enabled.
Command Purpose