hello-interval
Use this command to set the interval after which hello packets are sent out.
LDP defines a mechanism for discovering adjacent Label Switching Routers (LSRs) that participate in label switching (adjacencies). Hello messages are sent to the All Routers Multicast Group (224.0.0.2). Whenever a new router comes up, it sends out a hello packet to a specified, multicast address announcing itself to the network. Every router directly connected to the network receives the packet. Receipt of a hello packet from another LSR creates a hello adjacency with that LSR. Use this command to specify the interval after which the hello packets will be sent.
Used as a global command, the hello-interval value may be overridden by the hello-interval set on the interface (see
ldp hello-interval). For optimum performance, set this value to no more than one-third the value of the hold-time specified.
Use the no parameter to revert to default hello interval.
Command Syntax
hello-interval <1-21845>
no hello-interval
Parameters
<1-21845>
Specify the interval in seconds. The default is 5 seconds.
Default
By default, hello interval is 5 seconds
Command Mode
Router mode
Applicability
This command was introduced before OcNOS version 1.3.
Examples
This example shows how to set the hello-interval value for all interfaces of an LSR.
#configure terminal
(config)#router ldp
(config-router)#hello-interval 35
(config-router)#no hello-interval
Last modified date: 10/17/2023