Configuring Traffic Control; Enabling Storm Control - Alcatel OS-LS-6224 User Manual

1
Unit
----
1

Configuring Traffic Control

This section contains information for managing both port security and storm control,
and includes the following topics:

• Enabling Storm Control

• Configuring Port Security
Enabling Storm Control
Storm control limits 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 on all ports.
Broadcast storms may occur when a device on your network is malfunctioning, or if
application programs are not well designed or properly configured. If there is too
much broadcast traffic on your network, performance can be severely degraded or
everything can come to complete halt.
You can protect your network from broadcast storms by setting a threshold for
broadcast traffic for each port. Any broadcast packets exceeding the specified
threshold will then be dropped. The Storm Control Page provides fields for
configuring broadcast storm control.
Command Attributes
• Unit No. — Indicates the stacking member for which the Storm Control information
is displayed.
• Copy From Entry Number — Copies Storm Control information from the selected
port.
• To Row Number(s) — Copies Storm Control information to the selected ports.
• Port — Indicates the port from which storm control is enabled or disabled.
• Enable Broadcast Control — Indicates if Broadcast packet types may be
forwarded on the interface. The possible values are:
• Enabled — Broadcast Control is enabled on the port.
• Disabled — Broadcast Control is not enabled on the port.
• Broadcast Rate Threshold — The maximum rate (kilobits per second) at which
unknown packets are forwarded. Rate limitations are as follows:
• The range for FE ports is 70 - 100000. Default is 3500.
OPERATIONAL
Fan1
----
OK
Configuring Traffic Control
NOT OPERATIONAL
Fan2 Fan3
---- ----
OK OK
Fan4 Fan5
---- ----
OK OK
3
147