multicast-suppression
Function
The multicast-suppression command configures the multicast traffic suppression on the Ethernet interface.
The undo multicast-suppression command removes the multicast traffic suppression.
Parameters
| Parameter | Description | Value |
|---|---|---|
ratio |
Specifies the percentage of the maximum multicast traffic (that is allowed to pass through the interface) to the transmission capability of the interface. |
The value is an integer that ranges from 0 to 100. |
pps max-pps |
Specifies the maximum number of multicast packets that can be forwarded by the Ethernet interface every second. |
The value is an integer that ranges from 0 to 30000000. |
Usage Guidelines
Only the USG6515E/6550E/6560E/6580E support this command.
This command can be configured on Eth-Trunk member interfaces but not on the Eth-Trunk interface.
By default, multicast traffic suppression is disabled.
When multicast traffic exceeds the threshold specified by the user, the system discards the excess packets, so that the ratio of the multicast traffic can be lowered to the specified range, which ensures the normal running of network services.
For multicast traffic suppression based on packet rates, the granularity of parameter max-pps is 125. For example, if you set max-pps to 5, the actual value is 125. If you set max-pps to 126, the actual value is 250. The rest can be done in the same manner.
When the multicast or broadcast traffic suppression mode is switched on any interface, the other traffic suppression mode on the interface switches to the non-rate limit state (with the ratio being 100%). In addition, the multicast and broadcast traffic suppression modes on other interfaces are also switched to the non-rate limit state (with the ratio being 100%). For example, interfaces GigabitEthernet 0/0/1 and GigabitEthernet 0/0/2 exist on the device. When the multicast traffic suppression mode of the GigabitEthernet 0/0/1 is switched from pps to ratio, the broadcast traffic suppression mode of the GigabitEthernet 0/0/1 is switched to the non-rate limit state (with the ratio being 100%). In addition, the multicast and broadcast traffic suppression modes of the GigabitEthernet 0/0/2 are also switched to the non-rate limit state (with the ratio being 100%).
Example
# Set the multicast suppression ratio of GigabitEthernet 0/0/1 to 20%; that is, if the multicast traffic exceeds 20% of the transmission capability of the interface, excess multicast packets are discarded.
<sysname> system-view [sysname] interface GigabitEthernet 0/0/1 [sysname-GigabitEthernet0/0/1] multicast-suppression 20 Error:The storm suppression modes of interfaces on the slot are inconsistent. Before configuring the storm suppression mode for the interface, disable storm suppression on this slot. Confirm:Will you disable storm suppression on the slot and configure the storm suppression for the interface?[Y/N] Y Info:Storm suppression has been disabled on the slot and configured on the interface. [sysname-GigabitEthernet0/0/1]