434 | OSPF Commandsw w w . d e l l . c o m | s u p p o r t . d e l l . c o m CommandHistoryip ospf cost This command configures the cost on an OSPF interface.Syntax ip ospf cost 1-655351-65535 represents the cost for the specified interface or VLAN.The no ip ospf cost command configures the cost on an OSPF interface to the default.Default 10Mode Interface Config; Interface VLAN; Interface Range, which is indicated by the(conf-if-range-interface)# prompt, such as (conf-if-range-vlan 10-20)#.CommandHistoryip ospf dead-intervalThis command sets the OSPF dead interval for the specified interface.Syntax ip ospf dead-interval secondsThe seconds parameter is a valid positive integer, which represents the length of time in seconds that arouter's Hello packets have not been seen before its neighbor routers should declare that the router isdown. The value for the length of time must be the same for all routers attached to a common network.This value should be some multiple of the Hello interval.Range: 1 to 2147483647The no ip ospf dead-interval command sets the OSPF dead interval for the specified interface tothe default.Default 40 secondsVersion 2.3 Added Interface Range and Interface VLAN modes.Modified: Separated ip ospf authentication into two commands—ipospf authentication and ip ospf authentication-key, andremoved encrypt as a parameter.RelatedCommandsinterface range Defines an interface range and accesses the Interface Range modeinterface vlan Creates a VLAN or selects an existing one and enters the Interface VLANmode.ip ospf authentication Sets the OSPF Authentication Type and Key for the specified interface.Version 2.3 Added Interface Range and Interface VLAN modes.RelatedCommandsinterface range Defines an interface range and accesses the Interface Range modeinterface vlan Creates a VLAN or selects an existing one and enters the Interface VLAN mode