Chapter 8
| Congestion Control
Automatic Traffic Control
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4. Set the required threshold beyond which the switch will start dropping
packets.
5. Click Apply.
Figure 129: Configuring Storm Control
Automatic Traffic Control
Use the Traffic > Congestion Control > Auto Traffic Control pages to configure
bounding thresholds for broadcast and multicast storms which can automatically
trigger rate limits or shut down a port.
Command Usage
ATC includes storm control for broadcast or multicast traffic. The control response
for either of these traffic types is the same, as shown in the following diagrams.
Figure 130: Storm Control by Limiting the Traffic Rate
The key elements of this diagram are described below:
◆ Alarm Fire Threshold – The highest acceptable traffic rate. When ingress traffic
exceeds the threshold, ATC sends a Storm Alarm Fire Trap and logs it.
Storm Alarm
FireTRAP
Alarm Fire
Threshold
（1～255kpps）
AlarmClear
Threshold
（1～255kpps）
Traffic
[kpps]
Time
Traffic without storm control
Traffic with storm control
Apply Timer
expired
(0～300sec)
Auto Storm Control
Release Timer
expired
(0～300sec)
Storm Alarm
FireTRAP
StromAlarm
ClearTRAP
TrafficControl
ApplyTrap
StromAlarm
ClearTRAP
TrafficControl
Release Trap
Storm Alarm
FireTRAP
Alarm Fire
Threshold
（1～255kpps）
AlarmClear
Threshold
（1～255kpps）
Traffic
[kpps]
Time
Traffic without storm control
Traffic with storm control
Apply Timer
expired
(0～300sec)
Auto Storm Control
Release Timer
expired
(0～300sec)
Storm Alarm
FireTRAP
StromAlarm
ClearTRAP
TrafficControl
ApplyTrap
StromAlarm
ClearTRAP
TrafficControl
Release Trap
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