3Com SuperStack II Switch 3000 10/100 User Manual page 58

4-16 C 4: M
HAPTER ANAGING THE
Falling Action none / event / enable / event +
enable Use this field to specify the action for the
alarm to take when it reaches the falling threshold:
none — no action takes place
event — an SNMP trap is generated
enable — the port is enabled
event + enable — the port is enabled and an
SNMP trap is generated
If user defined appears as an option in the Falling
Action field, an unrecognized action has been speci-
fied using a MIB browser. You cannot select this
option.
You should be aware of the following points when
using Broadcast Storm Control:
The Switch takes 5–7 seconds to recognize that a
broadcast storm is occurring.
Broadcast Storm Control calculates the average
broadcast bandwidth over the previous
20-second interval. The average is based on four
samples taken at 5-second intervals.
When the average value exceeds the rising
threshold value, the rising action is triggered.
The action is not triggered again until the aver-
age broadcast bandwidth falls below the falling
threshold level.
S 3000 10/100
WITCH
RENEGOTIATE If the port is auto-negotiating, this
button allows you to restart the auto-negotiation
process for the port. Auto-negotiation normally
occurs when a link state changes. If the port at the
remote end of an auto-negotiated link changes con-
figuration, you can use the RENEGOTIATE button to
start the auto-negotiation without having to
change the link state.