D-Link DES-1228/ME, User Manual, Page: 65 / 267

DES-1228/ME Layer 2 Fast Ethernet Managed Switch
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Figure 6- 25. Safeguard Engine example
For every consecutive checking interval that reveals a packet flooding issue, the Switch will double the time it will discard ingress
ARP and IP broadcast packets. In the example above, the Switch doubled the time for dropping ARP and IP broadcast packets
when consecutive flooding issues were detected at 5 second intervals. (First stop = 5 seconds, second stop = 10 seconds, third stop
= 20 seconds) Once the flooding is no longer detected, the wait period for dropping ARP and IP broadcast packets will return to 5
seconds and the process will resume.
NOTE:
While in Exhausted mode, only trusted IP addresses are accepted to connect to the Switch.
To configure the Safeguard Engine for the Switch, click Administration > Safeguard Engine > Safeguard Engine Settings
which will open the following window.
Figure 6- 26. Safeguard Engine Settings window
To configure the Switch’s Safeguard Engine, change the State to Enabled . To configure the parameters for the Safeguard Engine,
click the CPU Utilization Settings button, which will alter the previous window to look like this: