multicast load-splitting-timer
Function
The multicast load-splitting-timer command sets a load balancing timer.
The undo multicast load-splitting-timer command restores the default setting.
Parameters
| Parameter | Description | Value |
|---|---|---|
| interval | Specifies the value of the load balancing timer. | The value is an integer ranging from 10 to 1800, in seconds. |
Usage Guidelines
By default, the value of a load balancing timer is 1800 seconds.
Multicast load splitting allows multicast forwarding entries to be distributed to different equal-cost routes, which implements multicast data distribution and avoids network congestion.
Multicast group-based load splitting
Multicast source-based load splitting
Multicast source and group-based load splitting
Stable-preferred load splitting
Balance-preferred load splitting
You must run the multicast routing-enable command to enable the multicast function before using the command.
The multicast load-splitting-timer is used to set a load balancing timer only in stable-preferred load splitting mode or balance-preferred load splitting mode.
In stable-preferred load splitting or balance-preferred load splitting mode, entries may not be well-balanced among paths because of the addition or deletion of entries, change of load splitting weights of the paths, or change of equal-cost routes. In such a case, the device will balance entries after a certain waiting time to reduce the impact of frequent changes on the system.
If the network is relatively stable, such as when entries are not deleted or added frequently or equal-cost routes are not changed frequently, set the load balancing timer value to a smaller value so that entries can be balanced rapidly. The recommended value is 300 to 600 seconds.
If the network is not stable, such as when entries are deleted or added frequently or equal-cost routes are changed frequently, set the load balancing timer value to a larger value to reduce the impact of frequent entry changes on the system and network stability. The recommended value is 1200 to 1800 seconds.
Example
# Set a load balancing timer to 100 seconds.
<sysname> system-view
[sysname] multicast routing-enable
[sysname] multicast load-splitting-timer 100
<sysname> system-view
[sysname] multicast routing-enable
[sysname] ip vpn-instance red
[sysname-vpn-instance-red] ipv4-family
[sysname-vpn-instance-red-af-ipv4] multicast load-splitting-timer 100