![WAGO 852-1305 Скачать руководство пользователя страница 57](http://html1.mh-extra.com/html/wago/852-1305/852-1305_manual_3162444057.webp)
WAGO-ETHERNET-Zubehör 852
Enhanced Features
57
852-1305 8/4-Port 100BASE-T/1000BASE-SX/LX
Manual
1.1.0
7.2.1.2 Rate Limitation
7.2.1.2.1 Storm Control
A broadcast storm means that the network is overwhelmed with constant
broadcast or multicast traffic. Broadcast storms can eventually lead to a complete
loss of network connectivity as the packets proliferate.
“Storm Control” protects the switch bandwidth from packet flooding, including
broadcast packets, multicast packets and DLF (“
D
estination
L
ookup
F
ailure”).
The Rate is a threshold that limits the total number of specific packet types. For
example, if the broadcast and multicast options are selected, the total number of
packets transmitted per second for those two types is not exceed.
“Broadcast Storm Control” limits the number of broadcast, multicast and
unknown unicast (also referred to as “Destination Lookup Failure” or DLF)
packets the switch receives per second on the ports. If the maximum number of
packets per second is reached, all subsequent packets are discarded. Enable this
function to reduce the number of these packets in the network.
The “Storm Control” unit is 625 pps (packets per second).
7.2.1.2.2 Rate Limitation
The “Rate Limitation” is used to control the rate of traffic sent or received on a
network interface.