Intel® NetStructure™ 6000 Switch

C H A P T E R 5
Managing the Switch
3 If the port is set to zero, it can discard indefinitely. Type set
storm nodiscard { all | port_number } to resume receiving on a
port that is discarding.
The switch does not have the ability to discard broadcast or multicast
traffic selectively. The discarding state is actually a “receive
disabled” state. When the broadcast or multicast threshold for a port
is exceeded, the switch disables frame reception for a given duration
that is equal to the discard duration. The discard duration range is
zero (0) to 256 seconds.The default is 5 seconds.
1 Type set storm bdiscard seconds { all | port_number } to set
the broadcast discard duration.
6000 Switch>set storm bdiscard 4 3
2 Type set storm mdiscard seconds { all | port_number } to set
the multicast discard duration.
6000 Switch>set storm mdiscard 8 3
A duration of zero (0) seconds is used to permanently disable the port
until it is changed. The switch sends alerts that notify the system
administrator that the port has exceeded a threshold and the port has
been disabled for the stated duration.
6000 Switch>set storm mdiscard 0 1
The following message is displayed:
Port 1 will be disabled when broadcast load reaches
threshold. User interaction is required to remove the
port from discarding state.
Note The switch may or may not detect a rate that is over the
threshold. The switch does not enter discard mode unless
the calculated rate is at least one percent more than the
threshold for two consecutive four-second periods. It takes
from eight to eleven seconds to detect a rate that is two percent
more than the threshold.
Type show storm to display the storm control information,. Select
from the following parameters:
• Active displays the storm control information for all the ports
that are actively monitoring.
• Discarding displays storm control information for all the ports
that are currently discarding packets.
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