ip pim-sparse hello-delay


ip pim-sparse hello-delay <DELAY-VALUE>

no ip pim-sparse hello-delay 


Configures the maximum time in seconds before the router actually transmits the initial PIM hello message on the current interface.

The no form of this command removes currently configured value and sets to the default of 5 seconds.

Command context






Specifies the hello-delay in seconds, which is the maximum time before a triggered PIM Hello message is transmitted on this interface. Default: 5. Range: 0 to 5.


Administrators or local user group members with execution rights for this command.


  • In cases where a new interface activates connections with multiple routers. If all the connected routers sent hello packets at the same time, the receiving router could become momentarily overloaded.

  • This command randomizes the transmission delay to a time between zero and the hello delay setting. Using zero means no delay. After the router sends the initial hello packet to a newly detected interface, it sends subsequent hello packets according to the current hello interval setting.


Configuring and removing hello-delay interface:

switch(config)# interface vlan 40
switch(config-if-vlan)# ip pim-sparse hello-delay 4
switch(config-if-vlan)# no ip pim-sparse hello-delay