H3C SOHO IE4300, Command Reference Manual

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33
Views
Ethernet interface view
Predefined user roles
network-admin
Parameters
ratio
: Sets the multicast suppression threshold as a percentage of the interface bandwidth. The
value range for this argument (in percentage) is 0 to 100. A smaller value means that less multicast
traffic is allowed to pass through.
pps max-pps : Specifies the maximum number of multicast packets that the interface can forward
per second. The value range for the max-pps argument (in pps) is 0 to 1.4881 × the interface
bandwidth.
kbps max-kbps
: Specifies the maximum number of kilobits of multicast traffic that the Ethernet
interface can forward per second. The value range for this argument (in kbps) is 0 to the interface
bandwidth.
Usage guidelines
The multicast storm suppression feature limits the size of multicast traffic to a threshold on an
interface. When the multicast traffic on the interface exceeds this threshold, the system drops
packets until the traffic drops below this threshold.
Both the storm-constrain command and the multicast-suppression command can
suppress multicast storms on a port. The
multicast-suppression
command uses the chip to
physically suppress multicast traffic. It has less influence on the device performance than the
storm-constrain
command, which uses software to suppress multicast traffic.
For the traffic suppression result to be determined, do not configure both the
storm-constrain
multicast
command and the
multicast-suppression
command on an interface.
When you configure the suppression threshold in kbps, the actual suppression threshold might be
different from the configured one as follows:
•
If the configured value is smaller than 64, the value of 64 takes effect.
•
If the configured value is greater than 64 but not an integer multiple of 64, the integer multiple of
64 that is greater than and closest to the configured value takes effect.
To determine the suppression threshold that takes effect, see the prompts on the switch.
Examples
# Set the multicast storm suppression threshold to 10000 kbps on GigabitEthernet 1/0/1.
<Sysname> system-view
[Sysname] interface gigabitethernet 1/0/1
[Sysname-GigabitEthernet1/0/1] multicast-suppression kbps 10000
The actual value is 10048 on port GigabitEthernet1/0/1 currently.
The output shows that the value that takes effect is 10048 kbps (157 times of 64), because the chip
only supports step 64.
Related commands
broadcast-suppression
unicast-suppression
port auto-power-down