D-Link DGS-3700 user manual Count Down, Time Interval, 255000, Storm Control Type, Settings

DGS-3700-12/DGS-3700-12G Series Layer 2 Gigabit Ethernet Switch User Manual

The following parameters can be configured:

Parameter	Description
		Traffic Control Settings
From Port / To Port	A consecutive group of ports may be configured starting with the selected port.
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.
	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 Port Configuration window in the Administration folder and selecting the
	disabled port and returning it to an Enabled status. 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
(0 or 5-30)	wait before shutting down the port that is experiencing a traffic storm. Only the switch
	continues to experience a traffic storm during this countdown period and the switch will
	shutdown the port. 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, 5-30minutes. 0 is disable
	forever state, port will not enter shutdown forever mode.
Time Interval (5-30)	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.
Threshold	Specifies the maximum number of packets per second that will trigger the Traffic Control
(0-255000)	function to commence. The configurable threshold range is from 0 to 255000 with a default
	setting of 131072.
Storm Control Type	Select the type of Storm Type to detect, either Broadcast Multicast or Unicast. Once selected,
	use the pull-down menu to enable or disable this storm detection.
		Traffic Trap Setting
Traffice Trap	Enable sending of Storm Trap messages when the type of action taken by the Traffic Control
Settings	function in handling a Traffic Storm is one of the following:
	•	None – Will not send any 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.

Click Apply to implement the settings made.

NOTE: Traffic Control cannot be implemented on ports that are set for

Link Aggregation (Port Trunking).

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