CANOGA PERKINS 9175 Configuration Guide - Manual (Page 235)

CanogaOS Configuration Guide
35-1
35 Configuring Storm Control
35.1 Overview
Storm control prevents traffic on a LAN from being disrupted by a broadcast, a multicast,
or a unicast storm on one of the physical interfaces. A LAN storm occurs when packets
flood the LAN, creating excessive traffic and degrading network performance.
Storm control uses one of these methods to measure traffic activity:
• Bandwidth as a percentage of the total available bandwidth of the port (Level
mode).
• Traffic rate in packets per second of the port (PPS mode).
35.2 Terminology
Following is a brief description of terms and concepts used to describe the Storm
Control:
PPS
Packets per second.
35.3 Configuring Bandwidth Percentage Storm control
35.3.1 Topology
Figure 35-1: Storm Control
35.3.2 Configurations
Bridge 1
DUT#configure terminal Enter the Configure mode.
DUT(config)#interface eth-0-1 Enter the interface mode.
DUT(config-if)#storm-control unicast level 0.1 Set threshold to 0.1 percent of current port bandwidth.
DUT(config-if)#storm-control multicast level 1 Set threshold to 1 percent of current port bandwidth.
DUT(config-if)#storm-control broadcast level 10 Set threshold to 10 percent of current port bandwidth.
DUT(config)#end Exit to exec mode.
DUT#show storm-control eth-0-1 Display storm control information.
35.3.3 Validation Commands
Bridge 1
DUT#show storm-control eth-0-1
Port ucastMode ucastLevel bcastMode bcastLevel mcastMode mcastLevel
eth-0-1 Level 0.10 Level 10.00 Level 1.00