Adjusting Time Parameters for Join/Prune Messages

Context

A PIM device sends Prune messages to its upstream neighbor to request the neighbor to stop sending multicast data to it. Prune messages are encapsulated in a Join/Prune message, which is defined by the PIM protocol to control multicast forwarding. When the upstream neighbor receives a Join/Prune message, it starts a timer and sets the timer value to the holdtime of the Join/Prune message. If the upstream neighbor does not receive any Join/Prune message before the timer expires, the upstream neighbor starts to forward multicast data to the downstream interface again.

The holdtime of Join/Prune messages can be configured in the PIM view or interface view. If the holdtime is configured both in the PIM view and interface view, the configuration in the interface view takes effect.

Default Settings

The default holdtime of Join/Prune messages is 210s.

Procedure

Global configuration
1. Run system-view
  The system view is displayed.
2. Run pim [ vpn-instance vpn-instance-name ]
  The PIM view is displayed.
3. Run holdtime join-prune interval
  The holdtime of Join/Prune messages is configured.
Configuration on an interface
1. Run system-view
  The system view is displayed.
2. Run interface interface-type interface-number
  The interface view is displayed.
3. (Optional) On an Ethernet interface, run undo portswitch
  The interface is switched to Layer 3 mode.
  
  By default, an Ethernet interface works in Layer 2 mode.
  
  Only the S5720-EI, S5720-HI, S5730-HI, S5731-H, S5731-S, S5731S-H, S5731S-S, S5732-H, S6720-EI, S6720-HI, S6720S-EI, S6730-H, S6730S-H, S6730-S, and S6730S-S support switching between Layer 2 and Layer 3 modes.
4. Run pim holdtime join-prune interval
  The holdtime of Join/Prune messages is configured.