Setting Broadcast Storm Control; Rising Threshold; Falling Threshold; Rising Action - 3Com TR User Manual

3com switch user guide
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To set a Locally Administered Address, take these
steps in the Locally Admin. field:
Enter address in hexadecimal.
1
This should be between 400000 000000 and
7FFFFF FFFFFF.
Press [OK].
2
Reset the Switch 2000 TR.
3
NOTE:The Locally Administered address will not be
valid until the Switch 2000 TR is reset. Refer to
"Resetting the Switch 2000 TR in Chapter 3 for
instructions on resetting.
To reverse the Locally Administered address and revert
to the resident MAC address enter all zeros and reset
the Switch 2000 TR.

Setting Broadcast Storm Control

The Switch 2000 TR automatically creates an alarm
on each of its ports for monitoring broadcast levels if
an alarm is set. This field allows you to set broadcast
threshold levels on each port. You can also set the
threshold action per port. Thresholds are calculated
using a moving 20 second window.

Rising Threshold%

The Rising threshold percentage setting determines
the amount of broadcast traffic that will be allowed
before an alarm is sent. The default setting is 60%.

Falling Threshold%

The Falling threshold percentage setting determines
the level at which the broadcast threshold will be
reset. This setting prevents the rising threshold events
from being triggered continuously. Events are only
enabled after the Falling Threshold is met. The default
setting is 50%.
Set the threshold fields by entering a number
1
between 0 and 99.
Press [Return].
2

Rising Action

Use this field to set alarm action for the rising thresh-
old. You have the following choices:
None—No action
Event—Event generated for SNMP
Blip—Port disabled, then enabled after 5 seconds
Event+blip—Port disabled, then enabled after 5
seconds and event generated

Falling Action

Use this field to set the action for the falling thresh-
old. Choices:
None—No action. Default
Event—Event generated
Set the action fields by toggling [Space Bar] to the
1
desired threshold actions.
Press [Return].
2
Port Configuration
4-9

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