Network and expansion unit and method for operating a network

摘要

A network, in particular an Ethernet network, contains as network elements at least two network components that are interconnected by a network transmission line. Accordingly, at least one expansion unit having two external ports is disposed in the network line for extending the scope thereof, wherein the expansion unit forwards a failure of the network transmission line at one of the ports thereof to a port of the next subsequent network element.

主权项

1. A network, comprising:
a network transmission line; at least two network components interconnected by means of said network transmission line; at least one expansion unit having two external ports and disposed in said network transmission line for extending a scope of said network transmission line, said expansion unit forwarding a failure of said network transmission line at one of said external ports to an external port of a next subsequent network component, and one of said network components receiving a warning telegram generating at least one further warning telegram with fault position identification and sending the at least one further warning telegram to external ports of downstream network elements; and wherein in an event of the failure of said network transmission line at one of said external ports of said expansion unit, the other of said external ports can be deactivated.