interfaces <interface> <interface-name> ip ospf hello-interval <interval>
Sets the interval between OSPF hello packets on an interface.
Hello packets are sent every 10 seconds.
- interface
- A type of interface. For detailed keywords and arguments that can be specified as interface types, refer to Supported Interface Types.
- interface-name
- The name of an interface.
- interval
- The interval, in seconds, between hello packets. This interval must be the same for all nodes on the network.The interval ranges from 1 through 65535. The default interval is 10 seconds.
Configuration mode
interfaces {
interfaces interface-name {
ip {
ospf {
hello-interval interval
}
}
}
}Use this command to set the interval at which OSPF hello packets are sent on an interface.
A hello packet is an OSPF packet that detects and maintains relationships with neighbors on the same network (directly connected routers). The greater the interval between hello packets, the less router traffic occurs, but the longer it takes for topological changes to be detected.
The hello interval must be the same for all routers that are to establish two-way communication within a network. If two routers do not agree on these parameters, they do not establish adjacencies and disregard communication for each other.
Use the set form of this command to set the interval between OSPF hello packets on an interface.
Use the delete form of this command to restore the default interval, which is 10 seconds, between OSPF hello packets on an interface.
Use the show form of this command to display the interval between OSPF hello packets on an interface.