Configuring OSPF router ospf
21-22 Routing Protocol Configuration
router ospf
UsethiscommandtoenableordisableOpenShortestPathFirst(OSPF)configurationmode.
Syntax
router ospf process-id
no router ospf process-id
Parameters
Defaults
None.
Enable passive OSPF mode on an interface. passive-interface (“passive-interface” on page 21-36)
Enable redistribution from non-OSPF routes. redistribute (“redistribute” on page 21-37)
Limit link state database overflow. database-overflow (“database-overflow” on page 21-38)
Enable graceful restart graceful-restart enable (“graceful-restart enable” on
page 21-39)
Disable graceful restart helper graceful-restart helper-disable (“graceful-restart helper-
disable” on page 21-40)
Setting the graceful restart restart-interval graceful-restart restart-interval (“graceful-restart restart-
interval” on page 21-40)
Disabling strict LSA checking for graceful
restart
graceful-restart strict-lsa-checking-disable (“graceful-
restart strict-lsa-checking-disable” on page 21-41)
Monitor and maintain OSPF. show ip ospf (“show ip ospf” on page 21-42)
show ip ospf database (“show ip ospf database” on
page 21-43)
show ip ospf border-routers (“show ip ospf border-routers”
on page 21-45)
show ip ospf interface (“show ip ospf interface” on
page 21-45)
show ip ospf neighbor (“show ip ospf neighbor” on
page 21-47)
show ip ospf virtual-links (“show ip ospf virtual-links” on
page 21-48)
clear ip ospf process (“clear ip ospf process” on
page 21-49)
debug ip ospf (“debug ip ospf” on page 21-50)
Enable RFC1583 compatibility rfc1583compatible (“rfc1583compatible” on page 21-50)
Table 21-2 OSPF Configuration Task List and Commands (continued)
To do this... Use these commands...
process‐id Specifies theprocessID,aninternallyusedidentificationnumberforan
OSPFroutingprocessrunonarouter.OnlyoneOSPFprocessis
allowedperdevice.Validvaluesare1to65535.
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