Glossary
SCALANCE X204RNA SCALANCE X204RNA EEC (PRP)
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Operating Instructions, , C79000-G8976-C294-03
Default gateway
A network node that forwards all frames not addressed to stations in the same LAN (subnet).
DHCP
DHCP (Dynamic Host Configuration Protocol), like BOOTP, a method for automatic
assignment of IP addresses. However, with DHCP, addresses can also be assigned while
the device is running.
Event
for Alarms & Events: An event is any occurrence that might be of interest to the client.
Although events can also be generated due to a condition being met, they do not need to be
related to conditions. Events that are not related to conditions include, for example, error
messages from the communications system.
Fault mask
Specifies the desired status (good status). Deviations from this occurring during operation
are handled as faults.
High Speed Redundancy
Method used on SIMATIC NET switches to increase the network availability in a ring
topology.
See also ►Media redundancy.
HTTP
Hypertext Transfer Protocol.
Protocol for transfer from Web sites
Media redundancy
Method for increasing availability in Industrial Ethernet networks in which devices can be
reached over different paths. This might be achieved by meshing networks, arranging
parallel transmission paths or by closing a linear bus topology to form a ring.
Media redundancy within a ring topology is available with SIMATIC NET products with the
►High Speed Redundancy and ►MRP methods.
Media Redundancy Protocol
A method specified in the IEC 61158 Type 10 standard for increasing network availability in
a ring topology.
See also ►Media redundancy.
Summary of Contents for SCALANCE X204RNA EEC
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