Link Aggregation - Siemens SIMATIC NET System Manual

2.3.11

Link aggregation

Link aggregation
With link aggregation, several parallel physical connections with the same transmission
speed are grouped together to form a logical connection with a higher transmission speed.
This method based on IEEE 802.3ad is also known as port trunking or channel bundling.
Link aggregation works only with full duplex connections with the same transmission speed
in point-to-point mode. This achieves multiplication of the bandwidth or transmission speed.
If part of the connection fails, the data traffic is handled via the remaining parts of the
connection.
To control and monitor, the Link Aggregation Control Layer (LACL) and the Link Aggregation
Control Protocol (LACP) are used.
Industrial Ethernet
System Manual, 09/2019, C79000-G8976-C242-10
Network structures and network configuration
2.3 Media redundancy
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