Hirschmann SWITCH
is a device that performs information exchange in a communication system.
The main functions of the switch include physical addressing,
network Topology, error checking, frame sequence, and flow control.
The switch also has some new functions, such as support for Vlan (Virtual Lan) ,
support for link aggregation, and even some firewall functions.
The HIRSCHMANN'S Principle
ethernet SWITCH knows the MAC address of each connected device
and maps the address to the corresponding port
in the Mac address table in the SWITCH cache.
FORWARDING/FILTERING:
When the Destination Address of a data frame
is mapped in the Mac address table,
it is forwarded to the port connecting the destination node
instead of all ports (if the data frame is a broadcast/multicast frame,
it is forwarded to all ports) .
Elimination loop:
When the switch includes a redundant loop,
the ethernet switch avoids the creation of a loop through
the Spanning Tree Protocol while allowing for the existence of a backup path.