Reference Guide

Storm Control | 871
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Storm Control
Storm Control is supported on platforms: e c s z
Storm Control for Multicast is supported on platforms: c s z
The storm control feature enables you to control unknown-unicast and broadcast traffic on Layer 2 and
Layer 3 physical interfaces.
Configure Storm Control
Storm control is supported in INTERFACE mode and CONFIGURATION mode.
Configure storm control from INTERFACE mode
Configure storm control from INTERFACE mode using the command storm control. From INTERFACE
mode:
• You can only on 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.
FTOS Behavior: On the E-Series, FTOS supports broadcast control for Layer 3 traffic only. To control
Layer 2 broadcast traffic use the command storm-control unknown-unicast. On the C-Series and
S-Series, FTOS supports broadcast control (command storm-control broadcast) for Layer 2 and Layer
3 traffic.
FTOS Behavior: On E-Series, bi-directional traffic (unknown unicast and broadcast) along with egress
storm control causes the configured traffic rates to be split between the involved ports. The percentage
of traffic that each port receives after the split is not predictable. These ports can be in the same/
different port-pipes or on the same/different line cards.
FTOS Behavior: The minimum number of packets per second (PPS) that storm control can limit on
the S4810 is 2.