D-Link xStack DGS-3426 User Manual - page 155
xStack DGS-3400 Series Fast Ethernet Switch
Parameter
Description
Traffic Control Recover
From… To
Select the ports to be shutdown.
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.
Storm Control Settings
From…To
Select the ports of this Switch to configure for Storm Control.
Broadcast
Enables or disable Broadcast Storm Control.
Multicast
Enables or disables Multicast Storm Control.
DLF
Enables or disables Destination Lookup Failure (DLF) storm control. (Not available for
Software based Traffic Control {Shutdown}).
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 resovled.
Shutdown – 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.
Threshold
Specifies the maximum number of packets per second that will trigger the Traffic Control
function to commence. This entry should be made in multiples of 128. Other entries will be
set internally closest to the multiple of 128. The configurable threshold range is from 0-2047
with a default setting of 1024.
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. 0 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 implemet the settings of each field.
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