Cabletron Systems switches, bridges manual Simm, Sma, Sqe, Stp

SIMM to Switch

SIMM

Single Attached

Single Mode

SMA

Spanning Tree

SQE

ST

Station

STP

Straight-Through

Switch

Single In-line Memory Module. A collection of Random Access Memory (RAM) microprocessors which are placed on a single, replaceable printed circuit board. These SIMMs may be added to some devices to expand the capacity of certain types of memory.

Connected to an FDDI network through a single cable which does not provide for auto-wrap functions.

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.

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.

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.

Signal Quality Error. A self-monitoring test performed by some Ethernet equipment which examines the status of the device at arbitrary and predefined intervals.

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.

See node.

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.

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.

A network device which connects two or more separate network segments and allows traffic to be passed between them when necessary. A switch determines if a packet should be blocked or transmitted based on the destination address contained in that packet.

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