Configuring Device Security
Defining Traffic Control
Cisco Small Business SFE/SGE Managed Switches Administration Guide 73
4
Defining Storm Control
Storm Control enables limiting the amount of Multicast and Broadcast frames
accepted and forwarded by the device. When Layer 2 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 per port by defining the packet type and the rate the
packets are transmitted. The system measures the incoming Broadcast and
Multicast frame rates separately on each port and discards the frames when the
rate exceeds a user-defined rate.
The
Storm Control Page
provides fields for configuring Broadcast Storm Control.
To define storm control:
STEP 1 Click Security Suite > Traf fic Control > Storm Control. The
Storm Control Page
opens:
Storm Control Page
The
Storm Control Page
contains the following fields:
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