Administrator Guide

Storm Control
Storm control allows you to control unknown-unicast, muticast, and broadcast traffic on Layer 2 and Layer 3 physical interfaces.
Dell EMC Networking Operating System (OS) Behavior: Dell EMC Networking OS supports unknown-unicast, muticast, and
broadcast control for Layer 2 and Layer 3 traffic.
Dell EMC Networking OS Behavior: The minimum number of packets per second (PPS) that storm control can limit on the device is
two.
To view the storm control broadcast configuration show storm-control broadcast | multicast | unknown-unicast |
pfc-llfc[interface] command.
EXEC Privilege
To view the storm control multicast configuration, use the show storm-control broadcast | multicast | unknown-
unicast | pfc-llfc [interface] command.
EXEC Privilege
Example:
To display the storm control unknown-unicast configuration, use the show storm-control unknown-unicast [interface]
command.
EXEC Privilege
Topics:
• Configure Storm Control
Configure Storm Control
Storm control is supported in INTERFACE mode and CONFIGURATION mode.
Configuring Storm Control from INTERFACE Mode
To configure storm control, use the following command.
From INTERFACE mode:
• You can only configure storm control for ingress traffic.
• If you configure storm control from both INTERFACE and CONFIGURATION mode, the INTERFACE mode configurations override the
CONFIGURATION mode configurations.
• The storm control is calculated in packets per second.
• Configure storm control.
INTERFACE mode
• Configure the packets per second of broadcast traffic allowed on an interface (ingress only).
INTERFACE mode
storm-control broadcast packets_per_second in
• Configure the packets per second of multicast traffic allowed on C-Series or S-Series interface (ingress only) network only.
INTERFACE mode
storm-control multicast packets_per_second in
• Shut down the port if it receives the PFC/LLFC packets more than the configured rate.
INTERFACE mode
storm-control pfc-llfc pps in shutdown
NOTE:
PFC/LLFC storm control enabled interface disables the interfaces if it receives continuous PFC/LLFC
packets. It can be a result of a faulty NIC/Switch that sends spurious PFC/LLFC packets.
53
Storm Control 819