8 - 8 WiNG 5.5 Access Point System Reference Guide
The firewall maintains a facility to control packet storms. Storms are packet bombardments that exceed the high threshold
configured for an interface. During a storm, packets are throttled until the rate falls below the configured rate, severely
impacting performance for the interface. Thresholds are configured in terms of packets per second.
8. Refer to the Storm Control Settings field to set the following:
9. Select + Add Row as needed to add additional Storm Control configurations for other traffic types or interfaces. Select the
Delete icon as required to remove selected rows.
10. Refer to the Storm Control Logging field to define how storm events are logged.
11. Select + Add Row as needed to add additional Storm Control log entries for other interfaces. Select the Delete icon as
required to remove selected rows.
12. Select OK to update the Storm Control settings. Select Reset to revert to the last saved configuration.The firewall policy
can be invoked at any point in the configuration process by selecting Activate Firewall Policy from the upper, left-hand
side, of the access point user interface.
13. Select the Advanced Settings tab.
Use the Advanced Settings tab to enable/disable the firewall, define application layer gateway settings, flow timeout
configuration and TCP protocol checks.
Traffic Type Use the drop-down menu to define the traffic type for which the Storm Control
configuration applies. Options include ARP, Broadcast, Multicast and Unicast.
Interface Type Use the drop-down menu to define the interface for which the Storm Control configuration
is applied. Only the specified interface uses the defined filtering criteria. Options include
Ethernet, WLAN and Port Channel.
Interface Name Use the drop-down menu to refine the interface selection to a specific WLAN or physical
port. This helps with threshold configuration for potentially impacted interfaces.
Packets per Second Select the check box to activate the spinner control used to specify the packets per second
threshold for activating the Storm Control mechanism.
Traffic Type Use the drop-down menu to define the traffic type for which the Storm Control logging
configuration applies. Options include ARP, Broadcast, Multicast and Unicast.
Logging Select the check box to activate the spinner control used to specify the standard log level
used if a Storm Control attack is detected. The default log level is Warning.
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