ECS4110-28T_Management Guide

C HAPTER 31 | Congestion Control Commands
Automatic Traffic Control Commands
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◆ Traffic storms can be controlled at the hardware level using this
command or at the software level using the auto-traffic-control
command. However, only one of these control types can be applied to a
port. Enabling hardware-level storm control on a port will disable
automatic storm control on that port.
◆ The rate limits set by this command are also used by automatic storm
control when the control response is set to rate limiting by the auto-
traffic-control action command.
◆ Using both rate limiting and storm control on the same interface may
lead to unexpected results. It is therefore not advisable to use both of
these commands on the same interface.
EXAMPLE
The following shows how to configure broadcast storm control at 600
packets per second:
Console(config)#interface ethernet 1/5
Console(config-if)#switchport broadcast packet-rate 600
Console(config-if)#
RELATED COMMANDS
show interfaces switchport (1008)
AUTOMATIC TRAFFIC CONTROL COMMANDS
Automatic Traffic Control (ATC) configures bounding thresholds for
broadcast and multicast storms which can be used to trigger configured
rate limits or to shut down a port.
Table 131: ATC Commands
Command Function Mode
Threshold Commands
auto-traffic-control
apply-timer
Sets the time at which to apply the control
response after ingress traffic has exceeded the
upper threshold
GC
auto-traffic-control
release-timer
Sets the time at which to release the control
response after ingress traffic has fallen beneath
the lower threshold
GC
auto-traffic-control
*
Enables automatic traffic control for broadcast
or multicast storms
IC (Port)
auto-traffic-control
action
Sets the control action to limit ingress traffic or
shut down the offending port
IC (Port)
auto-traffic-control
alarm-clear-threshold
Sets the lower threshold for ingress traffic
beneath which a cleared storm control trap is
sent
IC (Port)
auto-traffic-control
alarm-fire-threshold
Sets the upper threshold for ingress traffic
beyond which a storm control response is
triggered after the apply timer expires
IC (Port)