CLI Reference Guide-R02

Chapter 14 | Congestion Control Commands
Automatic Traffic Control Commands
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Usage Guidelines
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 3: Storm Control by Limiting the Traffic Rate
The key elements of this diagram are described below:
snmp-server enable
port-traps atc broadcast-
control-apply
Sends a trap when broadcast traffic exceeds the
upper threshold for automatic storm control and
the apply timer expires
IC (Port)
snmp-server enable
port-traps atc broadcast-
control-release
Sends a trap when broadcast traffic falls beneath
the lower threshold after a storm control response
has been triggered and the release timer expires
IC (Port)
snmp-server enable
port-traps atc multicast-
alarm-clear
Sends a trap when multicast traffic falls beneath the
lower threshold after a storm control response has
been triggered
IC (Port)
snmp-server enable
port-traps atc multicast-
alarm-fire
Sends a trap when multicast traffic exceeds the
upper threshold for automatic storm control
IC (Port)
snmp-server enable
port-traps atc multicast-
control-apply
Sends a trap when multicast traffic exceeds the
upper threshold for automatic storm control and
the apply timer expires
IC (Port)
snmp-server enable
port-traps atc multicast-
control-release
Sends a trap when multicast traffic falls beneath the
lower threshold after a storm control response has
been triggered and the release timer expires
IC (Port)
ATC Display Commands
show auto-traffic-control Shows global configuration settings for automatic
storm control
PE
show auto-traffic-control
interface
Shows interface configuration settings and storm
control status for the specified port
PE
* Enabling automatic storm control on a port will disable hardware-level storm control on the
same port if configured by the switchport packet-rate command.
Table 87: ATC Commands (Continued)
Command Function Mode
Storm Alarm
FireTRAP
Alarm Fire
Threshold
（1～255kpps）
AlarmClear
Threshold
（1～255kpps）
Traffic
[kpps]
Traffic
Traffic
Apply Timer
expired
(0 300 )
Auto Storm Control
Release Timer
expired
(0～300sec)
Storm Alarm
FireTRAP
StromAlarm
ClearTRAP
TrafficControl
ApplyTrap
StromAlarm
ClearTRAP
Storm Alarm
FireTRAP
Alarm Fire
Threshold
（1～255kpps）
AlarmClear
Threshold
（1～255kpps）
Traffic
[kpps]
Traffic
Traffic
Apply Timer
expired
(0 300 )
Auto Storm Control
Release Timer
expired
(0～300sec)
Storm Alarm
FireTRAP
StromAlarm
ClearTRAP
TrafficControl
ApplyTrap
StromAlarm
ClearTRAP