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DES-3010F/DES-3010FL/DES-3010G/DES-3016/DES-3018/DES-3026 Fast Ethernet Switch Manual
135
Parameter Description
Traffic Control Recover
From… To
Select the ports to be recovered from being “Shutdown Forever” by the shutdown action of this
feature.
Traffic Trap Configuration
Traffic Trap
Enable sending of Storm Trap messages when the type of action taken by the Traffic Control function
in handling a Traffic Storm is one of the following:
• None – Will send no Storm trap warning messages regardless of action taken by the Traffic
Control mechanism.
• Storm Occurred – Will send Storm Trap warning messages upon the occurrence of a
Traffic Storm only.
• Storm Cleared – Will send Storm Trap messages when a Traffic Storm has been cleared
by the Switch only.
• Both – Will send Storm Trap messages when a Traffic Storm has been both detected and
cleared by the Switch.
This function cannot be implemented in the Hardware mode. (When Drop is chosen in the Action
field.
Traffic Control Settings
From…To
Select the ports of this Switch to configure for Storm Control.
Broadcast
Storm
Enables or disable Broadcast Storm Control.
Multicast Strom
Enables or disables Multicast Storm Control.
Unicast Storm
Enables or disables Unknown Unicast storm control.
Threshold
Specifies the number of broadcast/multicast/unicast packets, in Kbps (Kilo bit per seconds), received
by the Switch that will trigger the Traffic Control function to commence. The configurable threshold
range is from 64-1024000 with a default setting of 64.
Action
Select the method of traffic Control from the pull down menu. The choices are:
Drop – Utilizes the hardware Traffic Control mechanism, which means the Switch’s hardware will
determine the Packet Storm based on the Threshold value stated and drop packets until the issue is
resolved.
Shut Down – Utilizes the Switch’s software Traffic Control mechanism to determine the Packet Storm
occurring. Once detected, the port will deny all incoming traffic to the port except STP BPDU packets,
which are essential in keeping the Spanning Tree operational on the Switch. If the Countdown timer
has expired and yet the Packet Storm continues, the port will be placed in Shutdown Forever mode
and is no longer operational until the user manually resets the port using the Storm Control Recover
setting at the top of this window. Choosing this option obligates the user to configure the Interval
setting as well, which will provide packet count samplings from the Switch’s chip to determine if a
Packet Storm is occurring.
Count Down
The Count Down timer is set to determine the amount of time, in minutes, that the Switch will wait
before shutting down the port that is experiencing a traffic storm. This parameter is only useful for
ports configured as Shutdown in their Action field and therefore will not operate for Hardware based
Traffic Control implementations. The possible time settings for this field are 0, 5-30 minutes. 5 is the
default setting for this field and 0 will denote that the port will never shutdown.
Interval
The Interval will set the time between Multicast and Broadcast packet counts sent from the Switch’s
chip to the Traffic Control function. These packet counts are the determining factor in deciding when
incoming packets exceed the Threshold value. The Interval may be set between 5 and 30 seconds
with the default setting of 5 seconds.
Click Apply to implement the settings of each field.