D-Link xStack DES-3500 Series Manual page 102

config traffic control
Restrictions
Example usage:
To configure traffic control and enable broadcast storm control for ports 1-12:
DES-3500 Layer 2 Fast Ethernet Switch CLI Reference Manual
Group 6 - Inclusive for ports 41-48 (DES-3550 only).
Group 7 - Inclusive for Gigabit port 49 (DES-3550 only).
Group 8 - Inclusive for Gigabit port 50 (DES-3550 only).
all − Specifies all group lists are to be configured for traffic control on the
Switch.
broadcast [enable | disable] − Enables or disables broadcast storm
control.
multicast [enable | disable] − Enables or disables multicast storm control.
unicast [enable | disable] − Enables or disables unicast traffic control.
action – Used to configure the action taken when a storm control has
been detected on the Switch. The user has two options:
•
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 ports enable command or waits for 5 mins to let the
Shutdown Forever mode enter Auto-Recovery. 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.
threshold <value 0-255000> − The upper threshold at which the specified
traffic control is switched on. The <value> is the number of
broadcast/multicast/unicast packets, in kilopackets per second (Kpps),
received by the Switch that will trigger the storm traffic control measures.
The default setting is 128000.
time_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.
sec 5-30 - The Interval may be set between 5 and 30 seconds with the
default setting of 5 seconds.
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.
•
0 - 0 is the default setting for this field and 0 will denote that
the port will never shutdown.
•
minutes 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 ports command mentioned
previously in this manual.
User Account Command Level – Administrator and Operator.
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