Quick Reference Guide

434 | OSPF Commands
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Command
History
ip ospf cost
This command configures the cost on an OSPF interface.
Syntax
ip ospf cost 1-65535
1-65535
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
10
Mode
Interface Config; Interface VLAN; Interface Range, which is indicated by the
(conf-if-range-interface)# prompt, such as (conf-if-range-vlan 10-20)#.
Command
History
ip ospf dead-interval
This command sets the OSPF dead interval for the specified interface.
Syntax
ip ospf dead-interval seconds
The seconds parameter is a valid positive integer, which represents the length of time in seconds that a
router's Hello packets have not been seen before its neighbor routers should declare that the router is
down. 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 2147483647
The no ip ospf dead-interval command sets the OSPF dead interval for the specified interface to
the default.
Default
40 seconds
Version 2.3 Added Interface Range and Interface VLAN modes.
Modified: Separated
ip ospf authentication into two commands—ip
ospf authentication and ip ospf authentication-key, and
removed
encrypt as a parameter.
Related
Commands
interface range Defines an interface range and accesses the Interface Range mode
interface vlan Creates a VLAN or selects an existing one and enters the Interface VLAN
mode.
ip ospf authentication Sets the OSPF Authentication Type and Key for the specified interface.
Version 2.3 Added Interface Range and Interface VLAN modes.
Related
Commands
interface range Defines an interface range and accesses the Interface Range mode
interface vlan Creates a VLAN or selects an existing one and enters the Interface VLAN mode