Config Traffic Control - D-Link xStack DGS-3400 Cli Manual

xStack

config traffic control

Purpose
Syntax
Description
Parameters
Restrictions
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DGS-3400 Series Layer 2 Gigabit Managed Switch CLI Manual
Used to configure broadcast/multicast/dlf traffic control.
config traffic control [<portlist> | all] broadcast [enable | disable] | multicast [enable
| disable] | dlf [enable | disable] | action [drop | shutdown] | threshold <value 0–
255000> | countdown [<value 0> | <value 5–30>] | time_interval <value 5–30>} (1)
This command is used to configure traffic control.
<portlist> − Used to specify a range of ports to be configured for traffic control. This is
specified by listing the lowest switch number and the beginning port number on that
switch, separated by a colon. Then the highest switch 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 switch number 1,
port 3. 2:4 specifies switch number 2, port 4. 1:3–2:4 specifies all of the ports between
switch 1, port 3 and switch 2, port 4 − in numerical order. Non–contiguous portlist entries
are separated by a comma. (ex: 1:1–1:3,1:7–1:9)
all − Specifies all ports 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.
dlf [enable | disable] − 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:
•
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.
threshold <value 0–255000> − The upper threshold at which the specified traffic control is
switched on. The <value> is the number of broadcast/multicast/dlf packets, in packets per
second (pps), received by the Switch that will trigger the storm traffic control measures.
The default setting is 131072.
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 traffic control_recover command
mentioned previously in this manual.
Only Administrator and Operator-level users can issue this command.
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