D-Link xStack DES-6500 Cli Manual page 111

xStack DES-6500 Modular Layer 3 Chassis Ethernet Switch CLI Manual
config traffic control
<portlist>  Used to specify a range of ports to be configured for traffic
Parameters
control. The port list is specified by listing the lowest line card number
and the beginning port number on that line card, separated by a colon.
Then the highest line card number, and the highest port number of the
range (also separated by a colon) are specified. The beginning and
end of the port list range are separated by a dash. For example, 1:3
specifies line card number 1, port 3. 2:4 specifies line card number 2,
port 4. 1:3-2:4 specifies all of the ports between line card 1, port 3 and
line card 2, port 4  in numerical order.
all  Specifies all ports are to be configured for traffic control on the
Switch.
broadcast [enabled | disabled]  Enables or disables broadcast storm
control.
multicast [enabled | disabled]  Enables or disables multicast storm
control.
dlf [enabled | disabled]  Enables or disables dlf traffic control.
action – Used to configure the action taken when a storm control has
been detected on the Switch. The user has two options:
threshold <value 0-2047>  The upper threshold at which the
specified traffic control is switched on. The <value> is the number of
broadcast/multicast/dlf packets, 128pps, received by the Switch that
will trigger the storm traffic control measures.
countdown - The countdown 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 the action field of this command and
therefore will not operate for Hardware based Traffic Control
implementations.
time_interval - The Interval will set the time between Multicast and

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 config traffic
control_recover command. Choosing this option obligates the
user to configure the time_interval field as well, which will
provide packet count samplings from the Switch's chip to
determine if a Packet Storm is occurring.

value 0 - 0 is the default setting for this field and 0 will denote
that the port will never shutdown.

value 5-30 – Select a time from 5 to 30 minutes that the Switch
will wait before shutting down. Once this time expires and the
port is still experiencing packet storms, the port will be placed in
shutdown forever mode and can only be manually recovered
using the config traffic control_recover command.
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