Owner's Manual

OSPF Commands 247
ospf hello-interval
The ospf hello-interval interface configuration command specifies the interval between hello
packets the software sends on an interface. To return to the default time, use the
no form of this
command.
Syntax
ospf hello-interval seconds
no ospf hello-interval
• seconds — Specifies the interval (in seconds). The time value must be the same for all
nodes on a specific network. (Range: 1 - 65535)
Default Configuration
The default hello-interval is 10 seconds.
Command Mode
IP Interface Configuration
User Guidelines
This value is advertised in the hello packets. The smaller the hello interval, the faster
topological changes are detected, resulting in extra routing traffic. This value must be the
same for all routers and access servers on a specific network.
Example
The following example defines the hello-time of 100 seconds on IP interface 1.100.100.100.
ospf dead-interval
The ospf dead-interval interface configuration command sets the interval at which hello packets
must not be seen before neighbors declare the router down. To return to the default time, use the
no form of this command.
Syntax
ospf dead-interval seconds
no ospf dead-interval
• seconds —Specifies the interval (in seconds). The time value must be the same for all
nodes on the network. (Range: 1- 2147483647)
Console(config)# interface ip 1.100.100.100
Console(config-ip)# ospf hello-interval 100