Security > Dos Attack Prevention Settings - D-Link DXS-1100 series User Manual

4 Configuration
The fields that can be configured are described below:
Trap State: Select the storm control trap option here. Options to choose from are None, Storm Occur,
Storm Clear, and Both.
None - no traps will be sent.
Storm Occur - A trap notification will be sent when a storm event is detected.
Storm Clear - A trap notification will be sent when a storm event is cleared.
Both - A trap notification will be sent when a storm event is detected or cleared.
Interval: Enter the interval value used here. This value must be between 5 and 600 seconds. By default, this
value is 5 seconds.
Retries: Enter the retries value used here. This value must be between 0 and 360. By default, this value is 3.
Tick the Infinite option to disable this feature.
From Port / To Port: Select the appropriate port range used for the configuration here.
Type: Select the type of storm attack that will be controlled here. Options to choose from are Broadcast,
Multicast, and Unicast. When the action is configured as the shutdown mode, the unicast refers to both
known and unknown unicast packets; that is, if the known and unknown unicast packets hit the specified
threshold, the port will be shutdown.
Action: Select the action that will be taken here. Options to choose from are None, Shutdown, and Drop.
None - Do not to filter the storm packets.
Shutdown - Shut down the port when the value specified for rise threshold is reached.
Drop - Discard packets that exceed the risen threshold.
Level Type: Select the level type option here. Options to choose from are PPS and Kbps.
PPS Rise: Enter the rise packets per second value here. This option specifies the rise threshold value in
packets count per second. This value must be between 0 and 14881000 packets per second. If the low PPS
value is not specified, the default value is 80% of the specified risen PPS.
PPS Low: Enter the low packets per second value here. This option specifies the low threshold value in
packets count per second. This value must be between 0 and 14881000 packets per second. If the low PPS
value is not specified, the default value is 80% of the specified risen PPS.
Click Apply to accept the changes made for each individual section.
After selecting the Kbps option as the Level Type, the following parameters are available.
The fields that can be configured are described below:
KBPS Rise: Enter the rise KBPS value used here. This option specifies the rise threshold value as a rate of
kilobits per second at which traffic is received on the port. This value must be between 0 and 2147483647
Kbps.
KBPS Low: Enter the low KBPS value used here. This option specifies the low threshold value as a rate of
kilobits per second at which traffic is received on the port. This value must be between 0 and 2147483647
Kbps. If the low KBPS is not specified, the default value is 80% of the specified risen KBPS.
Click Apply to accept the changes made.
Security > DoS Attack Prevention Settings
This window is used to view and configure the Denial-of-Service (DoS) attack prevention settings. The
following well-known DoS types which can be detected by most switches:
Figure 4.139 – Security > Storm Control (Kbps)
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