Allied Telesis AT-S94 Guide de l'utilisateur télécharger pdf (Page 75)

Configuring Device Security

Configuring Network Security

Page 75

Enabling Storm Control

Storm control limits the amount 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 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 for all ports 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 enable storm control:

1. Click Network Security > Storm Control. The Storm Control Page opens:

Figure 41: Storm Control Page

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Allied Telesis AT-S94 Guide de l'utilisateur Page 75