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static route
A route whose information is purposefully entered into the
routing table and takes priority over those chosen by dynamic routing
static VLANs
Static VLANs are manually configured port-by-port. This is
the method typically used in production networks.
statistical multiplexing
Multiplexing in general is a technique that allows
data from multiple logical channels to be sent across a single physical
channel. Statistical multiplexing dynamically assigns bandwidth only to
input channels that are active, optimizing available bandwidth so that more
devices can be connected than with other multiplexing techniques. Also
known as statistical time-division multiplexing, or stat mux.
Synchronous Transport Module Level 1. In the European SDH
standard, one of many formats identifying the frame structure for the
155.52Mbps lines that are used to carry ATM cells.
store-and-forward packet switching
A technique in which the switch
first copies each packet into its buffer and performs a cyclical redundancy
check (CRC). If the packet is error-free, the switch then looks up the desti-
nation address in its filter table, determines the appropriate exit port, and
sends the packet.
1) Shielded Twisted Pair: A two-pair wiring scheme, used in many net-
work implementations, that has a layer of shielded insulation to reduce EMI.
2) Spanning Tree Protocol.
stub area
An OSPF area carrying a default route, intra-area routes, and
inter-area routes, but no external routes. Configuration of virtual links
cannot be achieved across a stub area, and stub areas are not allowed to con-
tain an ASBR. See also: non-stub area, ASBR, and OSPF.
stub AS
An area that accepts only default routes.
stub network
A network having only one connection to a router.
Serial Tunnel: A technology used to connect an HDLC link to an
SDLC link over a serial link.
A portion of an SNA network made up of a subarea node and its
attached links and peripheral nodes.
Copyright ©2001 SYBEX , Inc., Alameda, CA