Command Line Reference Guide

720 | Open Shortest Path First (OSPFv2 and OSPFv3)
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Usage
Information
If this command is not configured, cost is based on the auto-cost command.
When you configure OSPF over multiple vendors, use the ip ospf cost command to ensure that all
routers use the same cost. Otherwise, OSPF routes improperly.
Related
Commands
ip ospf dead-interval
c e s
Set the time interval since the last hello-packet was received from a router. After the interval elapses,
the neighboring routers declare the router dead.
Syntax
ip ospf dead-interval seconds
To return to the default values, enter no ip ospf dead-interval.
Parameters
Defaults
40 seconds
Command Modes
INTERFACE
Command
History
Usage
Information
By default, the dead interval is four times the default hello-interval.
Related
Commands
ip ospf hello-interval
c e s
Specify the time interval between the hello packets sent on the interface.
Syntax
ip ospf hello-interval seconds
To return to the default value, enter no ip ospf hello-interval.
Parameters
Defaults
10 seconds
auto-cost Control how the OSPF interface cost is calculated.
seconds
Enter the number of seconds for the interval.
Range: 1 to 65535. Default: 40 seconds.
Version 8.3.5.0 Introduced on S55
Version 7.6.1.0 Introduced on S-Series
Version 7.5.1.0 Introduced on C-Series
pre-Version 6.1.1.1 Introduced on E-Series
ip ospf hello-interval Set the time interval between hello packets.
seconds
Enter a the number of second as the delay between hello packets.
Range: 1 to 65535.
Default: 10 seconds.