Supported Platforms
hello-interval (Protocols IS-IS)
Syntax
Hierarchy Level
Release Information
Statement introduced before Junos OS Release 7.4.
Statement introduced in Junos OS Release 9.0 for EX Series switches.
Statement introduced in Junos OS Release 12.1 for the QFX Series.
Description
Modify the frequency with which the routing device sends hello packets out of an interface, in seconds.
Routing devices send hello packets at a fixed interval on all interfaces to establish and maintain neighbor relationships. This interval is advertised in the hello interval field in the hello packet.
You can send out hello packets in subsecond intervals. To send out hello packets every 333 milliseconds, set the hello-interval value to 1.
Options
seconds—Frequency of transmission for hello packets.
Range: 1 through 20,000 seconds
Default: 3 seconds (for designated intermediate system [DIS] routers), 9 seconds (for non-DIS routers)
Required Privilege Level
routing—To view this statement in the configuration.
routing-control—To add this statement to the configuration.
