xStack DES-6500 Modular Layer 3 Chassis Ethernet Switch CLI Manual
config traffic control
latter of which will now provide shutdown, recovery and trap
notification functions for the Switch.
Parameters
<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.
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:
• 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 0-2047> − The upper threshold at which the
specified traffic control is switched on. The <value> is the number
of broadcast/multicast/dlf packets, in kilopackets per second
(Kpps), 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.
• 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
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