User manual
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1. Please enable flow control when using port speed limitation.
2. When using speed limitation, it will not discard the packet unless the flow control disable.
3. Port speed limitation need cables with high quality, otherwise it will cause a lot of conflict packets and incomplete
packets.
6.3.3 Storm Suppression
Broadcast storm is the accumulation of broadcast and multicast traffic on a computer network.
Extreme amounts of broadcast traffic constitute a broadcast storm. A broadcast storm can consume
sufficient network resources so as to render the network unable to transport normal traffic.
（
Figure 6.3.3
）
There are many reasons to cause broadcast storm. For example: a redundant or incorrect connect among
switches.
If enable storm suppression, it can stop the attack. Our device can detect 2 kinds of broadcast messages
according to the type of broadcast storm.
Broadcast packets: data frame of the destination address of FF-FF-FF-FF-FF-FF
Multicast packets: destination address is XX-XX-XX-XX-XX-XX data frames, second x is odd numbers
such as 1, 3, 5, 7, 9, b, d, and f, x represents any digit.
Destination lookup failure frame: the MAC address of this data frame doesn't exist in inside index. It needs
to transmit to all the ports, including unicast and multicast flow.
Maximum Speed
There are 5 levels: 3%, 5%, 10%, 20%, and 30%. The base is 100Mbps.
