Configuring Broadcast Storm Control - 3Com 3CBLSF26PWRH User Manual

Item
Current Port State
User
MAC

Configuring Broadcast Storm Control

Broadcast Storm Control limits the amount of Multicast and Broadcast frames accepted and forwarded
by the switch. 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.
Broadcast Storm is enabled for all Gigabit 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.
Packet threshold is ignored if Broadcast Storm Control is disabled.
This section contains the following topic:
Defining Broadcast Storm Control
Viewing Broadcast Storm Control
Defining Broadcast Storm Control
The Broadcast Storm Setup Page allows network managers to define Broadcast Storm Traffic.
Click Device > Broadcast Storm > Setup. The Broadcast Storm Setup Page opens.
Figure 3-81 Broadcast Storm Setup Page
The Broadcast Storm Setup Page contains the following fields:
Displays the current state of the port.
NORMAL: The user on the port passed the authentication.
BLOCK: The port is in the initial state after the LDB feature is
enabled or the port is aged out.
SLEEP: The number of the user's authentication attempts
exceeded the preset maximum value.
Displays the user passing the authentication.
Displays the MAC address of the user passing the authentication.
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Description