Siemens SCALANCE X-200 Specifications download pdf (Page 63)

SCALANCE X-300

Operating Instructions, 01, A5E01113043

Glossary

Aging time

The aging time is the time after which a learned MAC address is discarded if an IE Switch X-

300 has not received frames with this sender address during this time.

Autocrossover

Technique with which a TP port is automatically switched over between MDI and MDIX

assignment to make a connection independent of the port assignment of the device being

attached. This means that crossover cables are not required. The autocrossover function

can only be used when the port is set to autonegotiation mode.

Autonegotiation

Procedure standardized by IEEE 802.3 in which the transmission parameters (for example

10/100 Mbps, full/half duplex) are negotiated automatically between the devices.

BOOTP

A protocol for automatic assignment of IP addresses. The IP addresses are provided by a

BOOTP server.

CLI

Command Line Interpreter. Terminal-based configuration option for the IE Switch X-300.

With TELNET, the CLI can be used over every Ethernet port.

Collision domain

To ensure that the CSMA/CD protocol functions correctly, the propagation time of a data

packet from one node to another is restricted. This propagation time results in a spatially

limited span for the network depending on the data rate known as the collision domain.

Connection monitoring

With regular link test pulses, IE Switch X-300 monitors the connected TP and FO cable

segments for short-circuits or interruptions. The IE Switch X-300 does not send data to a

segment from which it is not receiving link test pulses.

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Siemens SCALANCE X-200 Specifications Page 63