Cabletron Systems MT8-MIM Especificaciones descargar pdf (Pagina 187)

Glossary-11

Single Attached to Subnet Mask

Single Attached Connected to an FDDI network through a single cable which does not

provide for auto-wrap functions.

Single Mode A type of ﬁber optics in which light travels in one predeﬁned mode, or

wavelength. Signals in single mode ﬁber optics are typically driven by

lasers. The use of lasers and the transmission characteristics of single

mode ﬁber optics allow the media to cover greater distances than

multimode ﬁber optics.

SMA Sub-Miniature Assembly. A modular connector and port system used in

multimode ﬁber optic cabling. The SMA connector is threaded, and is

screwed into an SMA port.

SNMP Simple Network Management Protocol. SNMP is a standardized set of

network monitoring tools. See also RMON.

Spanning Tree A mathematical comparison and decision algorithm performed by

Ethernet bridges at power-up. Spanning tree detects the presence of data

loops and allows the bridges to selectively activate some ports while

others remain in a standby condition, avoiding the data loops and

providing redundant paths in the event of bridge failures.

SQE Signal Quality Error. A self-monitoring test performed by some Ethernet

equipment which examines the status of the device at arbitrary and

predeﬁned intervals.

ST Straight-Tip. A modular connector and port system used with both

multimode and single mode ﬁber optic cabling. The ST connector utilizes

an insert and twist-lock mechanism.

Station See node.

STP Shielded Twisted Pair. Refers to a type of cabling, most commonly used in

Token Ring networks, which consists of several strands of cables

surrounded by foil shielding, which are twisted together. See also UTP.

Straight-Through A length of multi-stranded cable in which the transmit wire(s) of one end

is/are passed directly through the cable to the same location on the other

end. Straight-through cables are used for most facility cabling. See also

crossover.

Subnet A physical network within an IP network.

Subnet Mask A 32-bit quantity which may be set up in SNMP management devices to

indicate which bits in an IP address identify the physical network.

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Cabletron Systems MT8-MIM Especificaciones Pagina 187