D-Link DES-3028 Cli Reference Manual page 92

DES-3028 DES-3028P DES-3052 DES-3052P Layer 2 Fast Ethernet Switch CLI Reference Manual
config traffic control
Restrictions
Example usage:
To configure traffic control and enable broadcast storm control for ports 1-12:
DES-3028P:4# config traffic control 1-12 broadcast enable action
shutdown threshold 64 countdown 10 time_interval 10
Command: config traffic control 1-12 broadcast enable action shutdown
threshold 64 countdown 10 time_interval 10
Success.
DES-3028P:4#
show traffic control
Purpose
Syntax
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. 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 64-1000000> − The upper threshold at which the
specified traffic control is switched on. The <value> is the number of
broadcast/multicast/dlf packets, in Kbits per second (Kbit/sec), received by
the Switch that will trigger the storm traffic control measures. The default
setting is 64 Kbit/sec.
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.
•
minutes 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
Used to display current traffic control settings.
show traffic control { <portlist> }
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