Cisco SLM2024 Administration Guide - Page 46

Storm Control

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Security Storm Control 5 STEP 3 Click Save Settings. The settings are modified, and the device is updated. Storm Control Storm Control enables limiting the amount of Multicast and Broadcast frames accepted and forwarded by the device. When frames are forwarded, Broadcast and Multicast frames are flooded to all ports on the relevant VLAN. This occupies bandwidth, and loads all nodes connected on all ports. A Broadcast Storm is a result of an excessive amount of broadcast messages simultaneously transmitted across a network by a single port. Forwarded message responses are heaped onto the network, straining network resources or causing the network to time out. Storm Control is enabled by defining the packet type to apply the rate limit and the rate the packets are transmitted. The system measures the incoming Broadcast or Broadcast and Multicast frame rates on each port and discards the frames when the rate exceeds a user-defined rate. The Storm Control window provides fields for configuring Broadcast and Multicast Storm Control. To open the Storm Control window: Cisco Small Business SLM Series Smart Switches Administration Guide 42

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Security
Storm Control
Cisco Small Business SLM Series Smart Switches Administration Guide
42
5
STEP 3
Click
Save Settings
. The settings are modified, and the device is updated.
Storm Control
Storm Control enables limiting the amount of Multicast and Broadcast frames
accepted and forwarded by the device. When frames are forwarded, Broadcast
and Multicast frames are flooded to all ports on the relevant VLAN. This occupies
bandwidth, and loads all nodes connected on all ports.
A Broadcast Storm is a result of an excessive amount of broadcast messages
simultaneously transmitted across a network by a single port. Forwarded
message responses are heaped onto the network, straining network resources or
causing the network to time out.
Storm Control is enabled by defining the packet type to apply the rate limit and the
rate the packets are transmitted. The system measures the incoming Broadcast or
Broadcast and Multicast frame rates on each port and discards the frames when
the rate exceeds a user-defined rate.
The
Storm Control
window provides fields for configuring Broadcast and Multicast
Storm Control.
To open the
Storm Control
window: