Table 91: Rate Limit Commands; Storm Control Commands - Edge-Core ECS4120-28F Reference Manual

Storm Control Commands

switchport
packet-rate
Storm control commands can be used to configure broadcast, multicast, and
unknown unicast storm control thresholds. Traffic storms may occur when a device
on your network is malfunctioning, or if application programs are not well
designed or properly configured. If there is too much traffic on your network,
performance can be severely degraded or everything can come to complete halt.
You can protect your network from traffic storms by setting a threshold for
broadcast, multicast or unknown unicast traffic. Any packets exceeding the
specified threshold will then be dropped.

Table 91: Rate Limit Commands

Command Function
* Configures broadcast, multicast, and unknown
switchport packet-rate
unicast storm control thresholds
show interfaces Displays the administrative and operational status
switchport of an interface
* Enabling hardware-level storm control with this command on a port will disable software-level
automatic storm control on the same port if configured by the
This command configures broadcast, multicast and unknown unicast storm
control. Use the no form to restore the default setting.
Syntax
switchport {broadcast | multicast | unknown-unicast} packet-rate rate
no switchport {broadcast | multicast | unknown-unicast}
broadcast - Specifies storm control for broadcast traffic.
multicast - Specifies storm control for multicast traffic.
unknown-unicast - Specifies storm control for unknown unicast traffic.
rate - Threshold level as a rate; i.e., kilobits per second.
(Range: 500-14880000 pps)
Default Setting
Broadcast Storm Control: Disabled
Multicast Storm Control: Disabled
Unknown Unicast Storm Control: Disabled
Command Mode
Interface Configuration (Ethernet, Port Channel)
Chapter 15
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| Congestion Control Commands
Storm Control Commands
Mode
IC
NE, PE
auto-traffic-control command.